MSA Abrasi-Blast Series User manual

Abrasi-BlastTM
Respirator
instructions
The warranties made by MSA with respect to the product are voided if the product
is not installed, used, and serviced in accordance with the instructions in this
manual. Please protect yourself and your employees by following the instructions.
Please read and observe the WARNINGS and CAUTIONS inside. We encourage
our customers to write or call for a demonstration of this equipment prior to use
or for any additional information relative to use or repairs. Call 1-800-MSA-2222
during regular working hours.
This manual must be read carefully by all persons who have or will have the
responsibility for using or servicing the product. Like any complex piece of
equipment, the Abrasi-Blast Respirator from MSA will perform as designed only
if it is used and serviced according to the instructions. Otherwise, it could fail
to perform as designed, and persons who rely on this respirator could sustain
serious personal injury or death.
TAL 201 (L) Rev. 1 © MSA 2002 Prnt. Spec. 10000005389 (A) Mat. 818366
Doc. 818366
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2TAL 201 (L) Rev. 1 - 818366
NIOSH APPROVAL INFORMATION
Cautions and Limitations
A- Not for use in atmospheres con-
taining less than 19.5% oxygen.
B- Not for use in atmospheres imme-
diately dangerous to life or health.
C- Do not exceed maximum use con-
centrations established by regula-
tory standards.
D- Airline respirators can be used
only when the respirators are sup-
plied respirable air meeting the
requirements of CGA G-7.1 Grade
D or higher quality.
E- Use only the pressure ranges and
hose lengths specified in the users
instructions.
G- If airflow is cut off, switch to filter
and/or cartridge or canister and
immediately exit to clean air.
H- Follow established cartridge and
canister change schedules or
observe ESLI to ensure that car-
tridges and canisters are replaced
before breakthrough occurs.
J- Failure to properly use and main-
tain this product could result in
injury or death.
L- Follow the manufacturers users
instructions for changing car-
tridges, canisters and/or filters.
M- All approved respirators shall be
selected, fitted, used, and main-
tained in accordance with MSHA,
OSHA, and other applicable regu-
lations.
N- Never substitute, modify, add, or
omit parts. Use only exact replace-
ment parts in the configuration as
specified by the manufacturer.
O- Refer to users instructions, and/or
maintenance manuals for informa-
tion on use and maintenance of
these respirators.
S- Special or critical users instruc-
tions and/or specific limitations
apply. Refer to users instructions
before donning.
S - SPECIAL OR CRITICAL USERS
INSTRUCTIONS
The wearer must comply with the fol-
lowing MSA respirator use limitations:
1. The limitations outlined in the
applicable NIOSH approval.
2. Any applicable limitation contained
in a standard established by a reg-
ulatory agency (such as OSHA)
with jurisdiction over the wearer.
3. Do not wear protection against
substances with poor warning
properties or those which gener-
ate high rates or reaction with sor-
bent material in the canister.
4. If using the Duo-Flo combination
type Abrasi-Blast respirator, make
certain conditions of exposure are
within the limits for which the
device is approved or within the
limits established by MSA for
organic iodides and iodine vapor
(if using the GMR-I-P100 canister).
5. Users must wear suitable protective
clothing and precautions must be
taken so that the respirator is not
worn in atmospheres that may be
harmful to the device (see page 4).
6. This approval applies only when
the device is supplied with res-
pirable air through 8 to 300 feet of
air supply hose within the pres-
sure range of 65 to 85 pounds per
square inch gage.
7. Below 32°F add the following
nosecups to the facepiece:
a. Ultravue nosecups: 471539,
471540, or 471541.
b. Ultra Elite nosecups: 495188,
495189 or 7-901-1. Remove
the 805018 or 7-1384-1 baffle
before installing nosecup. The
baffle must be used if nosecup
is not in place.
8. A maximum of 12 sections of air
supply hose may be used in mak-
ing up the maximum working
length of hose. Each section of
coiled hose, regardless of length,
is considered 50 feet in length
(max.: 6 sections).
RESPIRATOR USE LIMITATIONS
Maximum Use Concentration
Do not exceed ANY of the applicable
maximum use concentrations listed in
the table on the following page.
Mixtures of Contaminants —
NIOSH allows this respirator to be
used for protection against a mixture of
contaminants that are present simulta-
neously or used alternately against one
contaminant then another (using the
same cartridges or filters) if the mixture
meets the following conditions:
Contents/NIOSH Approval Information
TABLE OF CONTENTS
NIOSH APPROVAL INFORMATION ................2
Cautions and Limitations ........................2
SPECIAL USER INSTRUCTIONS ..................2
RESPIRATOR USE LIMITATIONS ..................2
GENERAL DESCRIPTION .......................3
REQUIRED TOOLS ............................4
UNPACKING and INSPECTION ...................5
COMPONENT ASSEMBLY .......................5
DONNING the RESPIRATOR .....................6
USING the RESPIRATOR ....................... 9
Cleaning and Disinfecting ......................11
MAINTAINING the RESPIRATOR .................12
ACCESSORIES ..............................13
ABRASI-BLAST HOOD STYLES and ACCESSORIES . .15
FACEPIECE ASSEMBLIES ......................16
FLOW CONTROL DEVICES .....................17
PRESSURE GAUGE ASSEMBLY .................19
INTERCONNECTING AIR-LINE HOSES ............20
QUICK DISCONNECTS ........................21
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TAL 201 (L) Rev. 1 - 818366 3
a. The cartridge/filter must be
approved for all contaminants
present.
b. Contaminants present simulta-
neously must be below IDLH
levels for the specific contami-
nants. If any one contaminant in
the mixture exceeds the IDLH
concentration then the entire
mixture must be treated as
IDLH and the respirator cannot
be used (except for escape
from particulates with appropri-
ate filter).
Time Use Limitation
Canisters with an N95 filter shall be
limited to 8 hours of use (continuous
or intermittent) against particulates.
[Service time can be extended by per-
forming an evaluation in the specific
workplace setting that demonstrates
(a) that the extended use will not
degrade the filter efficiency below
95% or (b) that the total mass loading
of the filter is less than 200 mg.]
Exposure Limits
A listing of acceptable exposure limits
from the following sources.
• American Conference of Govern-
ment Industrial Hygienists (ACGIH)
• Occupational Safety and Health
Administration (OSHA)
• National Institute for Occupational
Safety and Health (NIOSH)
• American Industrial Hygiene
Association (AIHA)
Contact MSA at 1-800-MSA-2222 for
information.
Exposure Limits for Mixtures
The American Conference of Govern-
mental Industrial Hygienists (ACGIH)
publishes the following information to
determine the TLV of a mixture.
First, determine the total concentra-
tion of the chemical mixture (CMixture)
from the individual contaminant con-
centrations (C1,C
2,C 3...) using the
following formula:
CMixture =C
1+C 2+C 3+ ...
The TLV of the mixture is found by
using the following formula where T1,
T2,T
3... are the individual contaminant
TLVs and C1,C
2,C 3, ... are the individ-
ual contaminant concentrations:
Only use these equations if the conta-
minants present are actually mixed.
Some substances do not mix and
may be present separately, for exam-
ple, in pockets or at different levels. In
that case, the lowest TLV of the sub-
stances present must be used to
determine the appropriate respirator
category for protection against all
contaminants present.
GENERAL DESCRIPTION
Abrasi-Blast Respirators are approved
by the National Institute for Occu-
pational Safety and Health (NIOSH).
The Abrasi-Blast respirator is available
in the following basic configurations:
Configuration #1:
Type CE, supplied-air respirator with
low-pressure flow control valve
Configuration #2:
Type CE, supplied-air respirator with
high-pressure flow control valve.
Configuration #3:
Type CE, supplied-air respirator with
vortex tube.
Configuration #4:
Combination Type CE: Supplied-air
respirator and air-purifying respirator
with Duo-Flo valve and one of the fol-
lowing canisters or Filter cartridge:
GMA-C-N95 canister
GMD-C-N95 canister
GMR-I-P100 canister
P100 Filter Cargridge
Configuration #5:
Type CE, pressure-demand supplied-
air respirator with belt-mounted pres-
sure demand regulator.
Type CE, supplied-air respirators
(Configurations 1, 2, and 3, above) are
approved for use in atmospheres not
immediately dangerous to life or health:
“Not immediately dangerous to life or
health” means any hazardous atmos-
phere which may produce physical
discomfort immediately, chronic poi-
soning after repeated exposure, or
acute adverse physiological symptoms
after prolonged exposure (Title 42
CFR, Part 84, Subpart A, Par. 84.2(x)).
Type CE, Combination respirator
(Configuration 4,) is approved for use
against specific contaminants at con-
centrations not immediately danger-
ous to life or health. See pages 9 and
10 for respirator types and specific
protection provided.
Type CE, MSA Pressure Demand air-
line respirators (Configuration 5) are
approved for use in atmospheres not
immediately dangerous to life or health.
Description
RESPIRATOR TYPE RESPIRATORS WITH RESPIRATORS WITH
PARTICULATE FILTERS CHEMICAL OR
RESPIRATOR USE OR FILTER COMBINATION
CARTRIDGES CARTRIDGES
Routine Use in Air-Supplied • 1,000 Times Exposure • 100 Times Exposure
Mode - Including Entry Limit Limit
Continuous Use and • IDLH • IDLH
Non-Emergency Egress • 1,000 ppm organic vapors
for organic vapor
respirators only
Routine Use in Air-Purifying • 100 Times Exposure • 100 Times Exposure
Mode - Including Entry, Limit Limit
Continuous Use, Non- • IDLH • IDLH
Emergency Egress and/or • 1,000 ppm organic vapors
Moving from Station-to- for organic vapor
Station respirators only
Emergency Escape in Air- • Unlimited • 100 Times Exposure
Purifying Mode Limit
• IDLH
• 1,000 ppm organic vapors
for organic vapor
respirators only
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4TAL 201 (L) Rev. 1 - 818366
All Abrasi-Blast respirators are
equipped with a heavy rubber hood to
provide limited protection to the user’s
head and neck from rebounding abra-
sive materials. The hood also provides
limited protection to the facepiece lens
by using removable glass lens covers.
For additional specifications of Type
“CE” respirators, see Title 42 CFR,
Part 84, Subpart J.
Abrasi-Blast respirators are available
in waist, shoulder, and parka models
and may be used with the breathing
tube outside or under the hood.
Waist Model — Tube Out
Waist Model — Tube Under
Shoulder Model — Tube Out
Shoulder Model — Tube Under
The Abrasi-Blast respirator has been
approved by NIOSH with adjustable
valve-connectors, nonadjustable
valve-connectors, pressure demand
regulator, and the vortex tube. During
abrasive blasting operations, the face-
piece lens is protected by two to four
flat-glass cover lenses. Each cover
lens is removed by two pull-tabs when
it becomes so scratched that vision is
reduced. Respirator approval requires
the use of the proper length of
approved air-supply hose, approved
fittings, and a respirable air source.
The low- and high-pressure flow-con-
trol valves are available in adjustable
and non-adjustable versions.
Adjustable valves allow the user to
vary air flow within NIOSH-required
flow rates.
The vortex tube cools and regulates
the flow of the incoming air. The user
can adjust the temperature of the air
with a throttling valve at the end of
the tube. The Duo-Flo valve, used in
conjunction with the Ultra filter or a
chin-style canister, enables the user to
enter and escape from contaminated
atmospheres without using the air-line
air supply.
The user breathes through the filter or
canister until connecting the air-line.
The supplied-air mode of operation
may be used for long periods of time
without depleting the filter or canister.
The air-purifying mode of operation
also may be used for extended peri-
ods of time when an air source is not
available. During use, the respirator
remains in the supplied-air mode of
operation so long as the user is con-
nected to an air-line air source. The
air-purifying mode of operation is
entered “automatically” if the air-line
air source is disconnected or lost for
any reason.
The pressure demand air-line respira-
tor is designed to maintain a slight
positive pressure of air inside the
facepiece whether the wearer is inhal-
ing or exhaling. This helps prevent
contaminants from seeping in around
the facepiece, even if there should be
small breaks in the face-to-facepiece
seal. This type of respirator is suitable
for use with cascade air supplies and
other air supplies with minimum vol-
ume. A supply pressure of 65 to 85
psig must be maintained.
The Abrasi-Blast respirator may be
ordered in numerous configurations.
To identify the configuration you have
received, match the part numbers of
your unit with those listed on page 15.
You may wish to make a permanent
record of your complete system as an
aid for ordering replacement parts.
Use the listing below to keep a record
of your configuration in this manual.
Assembly Part No.
Hood _________
Cover Lens _________
Facepiece _________
Flow Control Valve _________
Air-Supply Hose _________
REQUIRED TOOLS
Abrasi-Blast respirator systems may
be assembled with standard tools and
materials following good work prac-
tices. The assembly tips below may
help:
1. All tapered pipe connections
should be wrapped with pipe seal-
ing tape (applied one thread back
from the end) before assembly.
2. Open-End Wrenches and Slip-Joint
Pliers should be used to tighten all
threaded connections, unless
specifically noted otherwise.
3. Test all threaded connections
under pressure with a commercial
leak-test solution or soapy water.
If a leak is detected, locate the
source and correct it before using
the respirator.
Assembly/Required Tools
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UNPACKING & INSPECTION
The Abrasi-Blast respirator consists of
the following subassemblies:
• hood
• facepiece
• breathing tube
• support belt
• collar
• lens housing assembly
• waist strap
• adjustable valve-connector,
non-adjustable valve-connector,
or vortex tube
• air-supply hose socket assembly
• cover lens cartridge
Thoroughly inspect the respirator
and all components when received
and before using. Read and
observe all NIOSH approval limita-
tions as they apply to using the
Abrasi-Blast respirator.
COMPONENT ASSEMBLY
Follow the steps below to assemble
your respirator. Do not don the respi-
rator until you have completed all
steps in this section.
1. Install the breathing tube:
Note: The breathing tube may be
worn either outside or under the
hood. Follow the instructions that
apply to assemble the breathing tube.
a. If the breathing tube is worn
outside the hood, locate the
3/4” hole in the front of the
hood. Push the male threaded
end of the breathing tube
through the hole until the hood
seals around the tube at the
first to sixth corrugation in the
breathing tube.
b. If the breathing tube is worn
under the hood, locate the 3/4”
metal plug in the collar inside
the hood and remove it by
stretching the rubber grommet.
c. Install the plug in the 3/4” hole
in the front of the hood by
stretching the rubber material.
d. Push the threaded end of the
breathing tube through the hole
in the collar until the rubber
grommet seals around the
breathing tube at the third cor-
rugation.
e. When using the parka hood,
P/N 807592, push the threaded
end of the breathing tube
through the elastic collar locat-
ed on the waist area of the
hood.
2. Assemble the facepiece to the
hood and breathing tube:
a. Unfasten the Velcro closure on
the collar and insert the face-
piece into the hood. (Parka
hood, P/N 807592, does not
have a collar).
b. Align the lens housing assem-
bly with the large opening in
the hood.
c. Stretch the rubber front of the
hood over the lens housing so
that the rubber forms a seal in
the channel between the door
frame and the lens housing
assembly.
d. Refasten the Velcro closure.
TAL 201 (L) Rev. 1 - 818366 5
Unpacking & Inspection/Component Assembly
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6TAL 201 (L) Rev. 1 - 818366
e. Attach the breathing tube to
the facepiece by threading the
coupling nut onto the breathing
tube. Be sure the gasket is in
the coupling nut. Hand-tighten.
3. Install the protective lens cartridge.
Select the proper cover lens for
the job. (Use the chart below as a
general guide to choose the car-
tridge.) A thinner cover lens may
not give satisfactory service life
because heavy abrasive may wear
holes in the lens.
a. To open the lens housing door,
grasp the top corner of the
plastic door and pull it away
from the hood.
b. Open the package of protec-
tive lens cartridges.
c. Insert the lens cartridge into
the lens housing. The car-
tridge can be installed so that
the pull-tabs are either at the
top or the bottom of the lens
housing.
Note: Be sure the 2 pull-tabs are not
caught in the lens door opening.
d. Close the lens housing door to
force the lens cartridge into
place. Pull on the door without
flexing the latch to be sure the
door is secured.
4. If a filter cartridge is to be used,
refer to page 16.
Note: The filter cartridge is not
approved for use on the combination
Duo-Flo type respirator.
5. Disconnect the socket assembly
from the valve-connector body
and thread the socket assembly
on the air-supply hose.
6. Connect the opposite end of the
air-supply hose to a respirable air
source.
Note: The pressure gauge assemblies
listed below are available with fittings.
The pressure gauge assembly is con-
nected to the air source where the air-
supply hose from MSA is attached.
Part No. Description
476734 Snap-Tite
476735 Foster
476736 Duff-Norton
476737 Hansen
476738 CEJN
476739 Foster (w/check valve)
476740 Hansen (w/check valve)
DONNING
This section includes the necessary
steps to don and check-out the respi-
rator. These steps must be followed
each time the respirator is used.
This respirator must be used only
by trained personnel and according
to MSA’s instructions.
Do not use the respirator as an
underwater device.
Wear impermeable protective cloth-
ing if exposed to poisons which can
be absorbed by the skin.
Wear appropriate protective clothing
to protect your body from rebound-
ing abrasive material.
This system must be supplied with
respirable air. See ANSI Z86.1-1973
[Compressed Gas Association Spec-
ification G-7.1 for Quality Verification
Level (Grade D) Gaseous Air].
Component Assembly/Donning
Lens Type Type of Service
.090” untempered Medium abrasive
blasting
.090” tempered Medium abrasive
blasting and
added protection
against glass
breakage due to
rough handling
.120” untempered Heavy abrasive
blasting
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TAL 201 (L) Rev. 1 - 818366 7
Failure to follow these precautions
can result in serious personal injury
or death.
A. Supplied-Air Type Respirators
1. Be sure that inlet air pressure is
set to agree with the valve-con-
nector you are using. Use the
information in the chart as a guide.
The air source must provide at least
4 cubic feet per minute (cfm) to
each respirator, and maintain the
required inlet pressure range speci-
fied in this manual for the specific
flow control device selected.
If the air supply pressure is greater
than 15 psig (BLACK body), 40 psig
(GOLD body), or 80 psig (Vortex
tube), be sure to use a pressure
regulator between the air supply
and air-supply hose. Adjust the reg-
ulator to deliver air at the pressures
specified by the valve-connector or
vortex tube you are using. Failure to
follow precautions can result in
serious personal injury or death.
Inlet air must have a dew point of
less than 0 degrees F and a tem-
perature between 60 degrees F and
140 degrees F. Higher dew points,
or air temperatures below 60
degrees F, may cause moisture to
freeze in the vortex and reduce air
flow. Air temperatures above 140
degrees F may damage the vortex.
2. Reconnect the socket assembly to
the flow control valve (valve-con-
nector, regulator, or vortex tube).
3. Slide the belt clip of the flow con-
trol over the support belt. Don the
support belt and position the flow
control so that it will be on your
left side. The vortex tube should
be worn on your right side so that
the air-supply hose will be behind
you.
4. Turn the air supply on. Check for
leaks with a commercial leak
detection solution or soapy water.
Tighten connections as required.
Turn off the air source.
5. Turn the back of the hood and
collar “wrong-side-out,” exposing
the facepiece headstraps. The
Velcro strip on the collar does not
have to be unfastened unless a
protective cap is worn.
6. Adjust the facepiece headstraps
so the end tabs are at the buckles.
7. Grip the facepiece between your
thumb and fingers with both
hands. Insert your chin into the
lower part of the facepiece. Pull
the facepiece headstraps over
your head. Smooth the straps flat
against your head.
a. Support the facepiece by hold-
ing the breathing tube at the
coupling nut assembly with
one hand.
b. Tighten the lower (neck) straps.
Pull the straps straight back,
not out.
c. Tighten the side (temple) straps.
d. Tighten the front (forehead)
strap to position the lens for
best vision and to support the
weight of the facepiece.
8. Skip section B, below. Refer to C.
Air-Tightness Test (Face-to-
Facepiece Seal).
Donning
GOLD BODY
HIGH PRESSURE SYSTEMS CONSTANT FLOW
APPROVED AIR-SUPPLY HOSE LENGTH:
8 - 300 FT.
APPROVED INLET AIR PRESSURE TO
MAINTAIN 4 CFM MINIMUM TO
FACEPIECE: 35 - 40 PSIG
BLACK BODY
LOW PRESSURE SYSTEMS CONSTANT FLOW
APPROVED AIR-SUPPLY HOSE LENGTH:
8 - 50 FT.
APPROVED INLET AIR PRESSURE TO
MAINTAIN 4 CFM MINIMUM TO
FACEPIECE: 10 - 15 PSIG
COOL VORTEX TUBE
HIGH PRESSURE SYSTEMS CONSTANT FLOW
APPROVED AIR-SUPPLY HOSE LENGTH:
8 - 300 FT.
APPROVED INLET AIR PRESSURE TO
MAINTAIN 4 CFM MINIMUM TO
FACEPIECE: 60 - 80 PSIG
WARM/COOL VORTEX TUBE
HIGH PRESSURE SYSTEMS CONSTANT FLOW
APPROVED APPROVED INLET AIR
AIR-SUPPLY PRESSURE TO MAINTAIN
HOSE LENGTH 4 CFM MINIMUM
TO FACEPIECE
8 - 100 FT. 60 - 75 PSIG
100 - 200 FT. 75 - 90 PSIG
200 - 300 FT. 80 - 95 PSIG
PRESSURE DEMAND
HIGH PRESSURE SYSTEMS CONSTANT FLOW
APPROVED AIR-SUPPLY HOSE LENGTH:
8 - 300 FT.
APPROVED INLET AIR PRESSURE TO
MAINTAIN 4 CFM MINIMUM TO
FACEPIECE: 65 - 85 PSIG
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8TAL 201 (L) Rev. 1 - 818366
B. Combination Duo-Flo Type
Respirators
1. Be sure that inlet air pressure is
set to agree with the valve-con-
nector you are using. Use the
information below as a guide.
The air source must provide at least
4 cubic feet per minute (cfm) to
each respirator, and maintain an
inlet pressure within the range of 35
- 40 psig. If the air supply pressure
is greater than 40 psig, be sure to
use a pressure regulator between
the air supply and air-supply hose.
Adjust the regulator to deliver air at
40 psig. Failure to follow precau-
tions can result in serious personal
injury or death.
2. Reconnect the socket assembly to
the Duo-Flo valve.
3. Slide the Duo-Flo valve belt clip
over the support belt. Don the
support belt and position the Duo-
Flo valve so that it will be on your
left side. Attach the appropriate fil-
ter or canister to the coupling nut
at the bottom of the Duo-Flo valve.
Remove the canister bottom seal.
4. Turn the air supply on. Check for
leaks with a commercial leak
detection solution or soapy water.
Tighten connections as required.
Disconnect the socket assembly
from the Duo-Flo valve. If the air-
line is to remain in a contaminated
atmosphere, this leak test should
be performed on respirators used
for the first time and periodically
to maintain the respirator in good
working condition.
5. Connect the breathing tube to the
opening at the top of the Duo-Flo
tube.
6. Turn the back of the hood and
collar “wrong-side-out,” exposing
the facepiece headstraps. The
Velcro strip on the collar does not
have to be unfastened unless a
protective cap is worn.
7. Adjust the facepiece headstraps
so the end tabs are at the buckles.
8. Grip the facepiece between your
thumb and fingers with both
hands. Insert your chin into the
lower part of the facepiece. Pull
the facepiece headstraps over
your head. Smooth the straps flat
against your head.
a. Support the facepiece by hold-
ing the breathing tube at the
coupling nut assembly with
one hand.
b. Tighten the lower (neck) straps.
Pull the straps straight back,
not out.
c. Tighten the side (temple) straps.
d. Tighten the front (forehead)
strap to position the lens for
best vision and to support the
facepiece weight.
C. Air Tightness Test (Face-to-
Facepiece Seal)
If the breathing tube is worn under
the hood, move your head from
side to side as well as up and down
to check for freedom of head
movement. If head movement is
restricted, or this method compro-
mises the face-to-facepiece seal in
any way, wear the breathing tube
on the outside of the hood only.
1. Supplied-Air Type Respirators Only:
Place the palm of your hand firmly
over the breathing tube coupling
nut or place your thumb over the
breathing tube opening inside the
coupling nut.
2. Combination Type Respirators Only:
Place your hands tightly over the
inlet(s) of the filter or canister.
3. Inhale gently so that the facepiece
collapses against your face. Hold
your breath for 10 seconds.
4. The facepiece should remain col-
lapsed if the seal is air-tight.
5. If the facepiece does not remain
collapsed, readjust the head har-
ness straps and re-test.
6. If an air-tight seal cannot be
obtained and leakage is not
caused by facial seal leakage,
check the facepiece and breathing
tube for leaks. See Maintaining the
Respirator, page12. Locate the
problem and correct before using
the respirator.
This device may not seal properly
with your face if you have a beard,
gross sideburns or similar physical
characteristics (see ANSI Z88.2-
1980). An improper facial seal may
allow non-respirable air to leak into
the facepiece, reducing or eliminat-
ing respiratory protection. If such
conditions exist, YOU, the user,
assume all risks of respiratory
injury or death which may result.
The face-to-facepiece seal must be
tested before each use.
Donning
DUO-FLO VALVE
HIGH PRESSURE SYSTEM
APPROVED AIR-SUPPLY HOSE
LENGTH: 8 - 300 FT.
APPROVED INLET AIR PRESSURE
TO MAINTAIN 4 CFM MINIMUM TO
FACEPIECE: 35 - 40 PSIG
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TAL 201 (L) Rev. 1 - 818366 9
D. Respirator Fitting Tests
A qualitative or quantitative respirator
fitting test must be carried out for
each wearer of a combination air-sup-
plied and air purifying type respirator.
The test shall be performed in the air-
purifying mode of operation and is
necessary in order to determine the
amount of protection the respirator
will provide while being used in the
air-purifying mode.
Qualitative Test:
If the wearer of the respirator passes
a qualitative fit test, the respirator can
be worn in contaminant (particulate
and/or organic vapor) concentrations
up to the maximum use concentration
listed below.
Quantitative Test
If the wearer of the respirator performs
a quantitative fit test, the respirator
can be worn in contaminant (particu-
late and/or organic vapor) concentra-
tions determined by the results of the
test, but not to exceed the maximum
use concentration listed below.
In addition to the above limitations, the
wearer must not exceed the limitations
listed in the applicable NIOSH Approval
or any maximum use concentration
controlled by OSHA regulations.
The user assumes all risks of death
or serious bodily injury which can
result if a fitting test is not per-
formed, or if the respirator limita-
tions are not followed.
Respirator fitting test and protection
factors are explained fully in ANSI
Z88.2, “Practices for Respiratory
Protection,” published by the American
National Standards Institute.
E. Final Hookup:
1. If wearing a protective cap, see
Step 2. Otherwise, proceed as fol-
lows:
a. Pull the respirator collar down
around your neck. The collar is
designed to stretch over your
shirt or coverall collar to help
seal out dust.
b. Pull the back of the hood down
in place on your shoulders. On
the waist-length model, attach
the waiststrap loosely to mini-
mize restrictions to head
movement.
2. If wearing a protective cap, you
may wish to either remove and
reverse the suspension so the bill
of the cap is in the back or wear it
in the standard manner with the
bill in front.
Note: A protective cap cannot be
used with the duck cloth hood.
a. Unfasten the Velcro strip on
the collar. Don the cap with the
bill to the rear or front.
b. Pull the collar down around
your neck and fasten the
Velcro strip on the collar. The
collar should be over your shirt
or coverall to help seal out
dust.
c. Pull the back of the hood down
in place on your shoulders. On
the waist-length model, attach
the waiststrap loosely to mini-
mize restrictions to head
movement.
3. Turn the air-supply on.
4. Supplied-Air Type Respirators:
Connect the breathing tube cou-
pling nut to the valve connector.
Hand-tighten. Pull on the air-sup-
ply hose to test the connection.
5. Combination Type Respirators:
Connect the socket assembly to
the Duo-Flo valve when it is
desired to switch from the air-puri-
fying mode to the supplied-air
mode of operation.
USING THE RESPIRATOR
Do not use an Abrasi-Blast respira-
tor if air contaminants are unknown,
immediately dangerous to life or
health, or you cannot escape with-
out respiratory protective equip-
ment. The supplied-air Abrasi-Blast
respirator configuration does not
afford respiratory protection if the
air supply fails.
Do not use the Duo-Flo Combination
configuration of the Abrasi-Blast
respirator in atmospheres contain-
ing less than 19.5 percent oxygen, in
atmospheres exceeding the limits
for which the filter or canister will
provide protection, or against organ-
ic vapors with poor warning proper-
ties or those which generate high
Donning/Using the Respirator
Facepiece Type Maximum Use Concentration
Half-mask facepiece 10 times the TLV for the contaminant
Full facepiece 100 times the TLV for the contaminant
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10 TAL 201 (L) Rev. 1 - 818366
heats of reaction with sorbent mate-
rials in the canister.
Do not use near flame or hot metal,
because hood material may burn.
The hood material is classified as
self-extinguishing as required by
Federal Standard 191, Method 5910.
Do not contact organic-based sol-
vents which may attack the hood
material, air-supply hose or other
plastic components. A partial list of
such solvents is as follows:
* Benzene
* Methyl Ethyl Ketone (MEK)
* Ethylene Dibromide
* Tetrahydrofuran (THF)
* Ethyl Acrylate
* Acetonitrile
* Isobutyl Amine
* Petroleum-Based Solvents
Return to a safe atmosphere and
discard the respirator immediately
if discoloration, crazing, blistering,
cracking or other deterioration of
the hood material, air-supply hose
or other plastic components is
observed. Failure to follow this pre-
caution can result in serious per-
sonal injury or death.
Changing Cover Lenses
The outer cover lens should be re-
moved when it gets dirty or scratched.
To change the cover lens, grasp one
of the pull-tabs on the corners of the
lens and pull straight out. The last pro-
tective lens in the cartridge has no
pull-tab. It is to be kept over the pri-
mary lens to protect its surface from
abrasive materials.
To install a protective lens
cartridge:
1. Select the proper cover lens for
the job. (Use the chart below as a
general guide to choose the car-
tridge.) A thinner cover lens may
not give satisfactory service life
because heavy abrasive may wear
holes in the lens.
a. To open the lens housing door,
grasp the top corner of the
plastic door and pull it away
from the hood.
b. Open the package of protec-
tive lens cartridges.
c. Insert the lens cartridge into the
lens housing. The cartridge can
be installed so that the pull-
tabs are either at the top or the
bottom of the lens housing.
Note: Be sure the 2 pull-tabs are not
caught in the lens door opening.
d. Close the lens housing door to
force the lens cartridge into
place. Pull on the door without
flexing the latch to be sure the
door is secured.
Select the proper cover lens for the
job. A thinner lens may not last
long, because heavy abrasives may
cause cracks in the lens.
Do not remove a lens cartridge dur-
ing abrasive work. The primary lens
may be polycarbonate and will
scratch easily. If the primary lens is
damaged, the entire lens housing
assembly must be replaced.
Do not remove the facepiece in a
contaminated area to replace the
lens cartridge. The contaminant will
remain in the surrounding air after
abrasive blasting. Return to a safe
atmosphere before removing the
respirator. Failure to observe this
precaution can cause inhalation of
the contaminant with resultant seri-
ous respiratory injury or death.
Adjusting Air Flow on Adjustable
Valve-Connectors
1. Push in on the adjusting knob,
then turn the knob.
2. Turn the knob fully clockwise (up)
for minimum air flow.
Using the Respirator
Lens Type Type of Service
.090” untempered Medium abrasive
blasting
.090” tempered Medium abrasive
blasting and
added protection
against glass
breakage due to
rough handling
.120” untempered Heavy abrasive
blasting
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TAL 201 (L) Rev. 1 - 818366 11
3. Turn the knob fully counter-clock-
wise (down) for maximum air flow.
Note: The adjusting knob may vary air
flow, but cannot reduce flow below the
required minimum 4 cfm rate when the
proper pressure is used at the inlet of
the air-supply hose from MSA.
Adjusting the Temperature with the
Vortex Tube
1. For minimum cooling, turn the
adjusting valve fully clockwise.
2. Rotate the adjusting valve
counter-clockwise until a comfort-
able temperature is reached.
3. For maximum cooling, turn the
valve counter-clockwise (approxi-
mately 3-1/2 full turns). The
adjusting knob may vary air flow
but cannot reduce flow below the
required minimum 4 cfm rate
when the proper pressure is used
at the inlet of the air-supply hose
from MSA.
Converting to Different Modes of
Operation on Duo-Flo Type
1. When using the respirator in the
air-purifying mode of operation,
the supplied-air mode is entered
when an air-line air supply is con-
nected to the Duo-Flo valve. The
air-line inlet pressure must be 35 -
40 psig in order to maintain 4 cfm
to the facepiece.
2. When using the respirator in the
supplied-air mode of operation,
the air-purifying mode is entered
when the air-line air supply is dis-
connected from the Duo-Flo valve.
The air-purifying mode is entered
“automatically” if the air-line
source is lost for any reason.
Return to fresh air immediately if:
•Leakage is detected by smell,
taste, or eye, nose or throat irri-
tation.
•High breathing resistance is
encountered.
•Any feeling of nausea, dizziness
or ill-being develops.
Failure to follow this precaution can
result in serious personal injury or
death.
Removing the Respirator
1. To remove the hood, air supply
system and facepiece, return to
fresh air and clean the outer sur-
faces of the respirator before
removing the facepiece.
2. Unsnap the waist-strap on the
waist-length model.
3. Lift the back of the hood over your
head.
4. If you are wearing a protective cap,
separate the Velcro strips on the
hood collar and remove the cap.
5. Place your finger tips behind the
headstraps. Place your thumbs on
the buckles. Pull the top of the
buckles away from your head.
Repeat as needed to loosen the
headstraps. Grip the facepiece by
the inhalation housing. Pull the
facepiece out, then up over your
head. To remove the facepiece
quickly, pull the facepiece away
from your face, then up over your
head.
6. Disconnect the air-line quick-dis-
connect.
7. Turn the air supply off.
8. Disconnect the breathing tube
from the flow control valve.
Cleaning and Disinfecting
The respirator must be cared for after
each use and on a regular mainte-
nance schedule. Thorough mainte-
nance includes cleaning and disinfect-
ing, as well as inspection of compo-
nents and parts replacement.
1. Remove excess dust from the res-
pirator.
2. Unlatch the lens door.
3. Grasp the foam frame edge of the
lens cartridge and carefully pull
the cartridge out.
4. Remove the used protective lens-
es from the hood pocket and dis-
pose of them properly.
5. Clean and disinfect the respirator
components after separating them.
a. Unzip the collar. The collar may
be cleaned in a washer and
dryer similar to a conventional
garment (110 degrees F maxi-
mum water and air tempera-
ture).
b. Disconnect the breathing tube
from the facepiece.
Using the Respirator
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12 TAL 201 (L) Rev. 1 - 818366
c. Separate the facepiece from
the hood. Stretch the rubber
front of the hood over the lens
housing assembly and remove
the facepiece.
d. Prepare the cleaner, follow the
instructions with the Confidence
Plus®Cleaning Solution (P/N
10009971). Note: If the
Confidence Plus Cleaning
Solution is not used, prepare in
accordance with the instructions
provided with cleaning products.
e. Submerge the facepiece, hood,
and support belt in the solu-
tion. Scrub gently until clean.
Alcohol should not be used as a ger-
micide. It may deteriorate the rubber.
f. Rinse facepiece and compo-
nents in clean, warm (110°F),
preferably drain to remove the
solution, then air-dry.
If not rinsed thoroughly, cleaning
agent residue may irritate the wear-
er’s skin.
g. Use a damp cloth or sponge
saturated with the solution to
wipe the breathing tube.
Do not force-dry with heat.
Temperatures above 110 degrees F
may distort or damage parts of this
respirator.
The primary facepiece lens may be
polycarbonate and may be scratched
if rubbed with coarse dry cloth or
paper towels.
h. Reassemble the respirator and
store in a cool, dry place out of
direct sunlight. Do not store
the respirator or components
within or near an area where
respirator or components can
or might be exposed to sub-
stances that will or might
attach any part, causing the
parts NOT to perform as
designed and approved.
MAINTAINING THE RESPIRATOR
Only trained personnel are to main-
tain the respirator. Use only genuine
MSA parts. Do not make repairs or
design modifications other than as
recommended by MSA or the NIOSH
approval will be voided.
Regular maintenance and inspection of
components of the respirator are nec-
essary to assure proper protection. In
addition, the NIOSH approvals require
that you regularly inspect this unit.
Parts found to be worn or damaged
must be replaced. See the parts list for
correct replacement part numbers.
Inspect the respirator after it has
been cleaned and sanitized. The
respirator must be inspected before
it is used again. Failure to follow
this precaution can expose the user
to contaminants, resulting in seri-
ous personal injury or death.
Inspection
1. Check the hood for tears or holes.
2. Check that the metal plug is
inserted in the grommet in either
the hood or collar.
3. Install a new lens cartridge.
4. Inspect the breathing tube for
tears, cracks or other signs of
wear or damage.
5. Remove the facepiece exhalation
valve cover and check the valve(s)
for tears, holes or cracks indicat-
ing wear or damage. Check the
exhalation valve seat to assure
that it is free from debris and has
no cracks, scratches or other
signs of damage. Replace the
cover and spin it to be sure it is
secure.
Replacing the Filter, Canister and
Cartridge (Air-Purifying
Configurations)
The length of time the P100 filter or
canister will give protection depends
on the concentration of the contami-
nant and the rate of breathing while in
the air-purifying mode of operation.
Canisters with an N95 filter are effec-
tive for 8 hours of use (continuous or
intermittent). [Service time can be
extended by performing an evaluation
in the specific workplace setting that
demonstrates (a) that the extended
use will not degrade the filter efficien-
cy below 95%, or (b) that the total
mass loading of the filter is less than
200mg.] When the facepiece is prop-
erly adjusted, the following conditions
are indications that the filter or canis-
ter has served its useful life and
should be replaced.
Maintaining the Respirator
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TAL 201 (L) Rev. 1 - 818366 13
Canister Excessive breathing
w/P100 Filter: resistance upon
inhalation.
Canister with Excessive breathing
N95 Filter: resistance upon
inhalation.
Time use limitation
is reached.
Canister with Breakthrough as
any Filter: indicated by odor,
taste, or eye, nose,
or throat irritation.
P100 Filter Excessive Breathing
Cartridge resistance upon
inhalation
The wearer should return immediately
to fresh air if these conditions develop.
Remove the exhausted filter or canis-
ter and examine the gasket in the cou-
pling nut making sure it is properly in
place before attaching a suitable new
canister.
Protection voided if sealing gaskets
are not in their proper place. Failure
to follow this precaution can result
in serious personal injury or death.
The bottom seal on the canister
should be replaced after each use.
Repositioning the Lens Housing
Assembly
The standard position of the assembly
in the facepiece is with the hinge at
the bottom. The lens housing may be
reversed so that the door opens with
the hinge at the top. To reposition the
assembly:
1. Remove the lens housing assem-
bly from the hood.
2. Loosen the two lens retaining ring
screws on the facepiece.
3. Remove the lens retaining rings
and the lens housing assembly
from the facepiece.
4. Reverse the lens housing assembly
so that the door hinge is at the top.
5. Re-install the lens retaining rings
and screws.
6. Perform the Air-Tightness Test,
page 8.
ACCESSORIES
Nosecup
The nosecup is used with the Ultravue
(full) facepiece to reduce lens fogging
caused by high humidity or tempera-
tures below 32°F. Nosecups are avail-
able in small (P/N 471710), medium
(P/N 471711), or large (P/N 471712).
To install the nosecup:
1. Place the nosecup in the face-
piece and position it so its rubber
ring faces toward the plastic
retainer ring.
2. Starting at the top, stretch and
push the rubber ring of the nose-
cup under the plastic retainer ring
of the speaking diaphragm
assembly.
3. Continue stretching the nosecup
ring and work it into place.
Spectacle Kit (P/N 454819)
The spectacle kit is designed to be
used by people who wear glasses.
The temple bars of conventional
glasses stick through the sealing edge
of a full facepiece and prevent a prop-
er seal. The kit includes the support
assembly, a rubber block, and the
spectacle frame. Prescription lenses
can be obtained locally or through
MSA. To install the kit:
1. Hold the support assembly so that
the “coated” arms are up and the
rubber block is toward the face-
piece lens.
2. Squeeze the arms together and
insert the assembly into the face-
piece.
Accessories
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14 TAL 201 (L) Rev. 1 - 818366
3. Place the arms against the lens
and release them. The ends of the
arms also must be against the lens.
4. Adjusting the spectacles:
a. To move the spectacles closer
to your face, pull the frame
prongs out of the rubber block.
b. To move the spectacles farther
from your face, push the frame
prongs into the rubber block.
c. To move the spectacles up or
down, slide the rubber block up
or down on the support arms.
Filter Cartridge Assembly
Filter cartridges are used to remove
slight odors from gases or vapors, or
to remove dusts, mists, and fumes that
may be in the air supply.
When odors of vapors or gases
become noticeable, or when breathing
resistance becomes uncomfortable,
the cartridge must be replaced. Filter
cartridges should be checked for flow
resistance using the P/N 465783 Filter
Resistance Tester from MSA.
The P/N 476089 Cartridge Holder is
approved for use with the supplied-air
configuration of the Abrasi-Blast res-
pirator only, when it is equipped with
the following filters:
GMA Cartridges approved for respira-
tory protection against not more than
1000 parts per million of organic
vapors. Available in packages of 10
under P/N 464031.
P100 Cartridge approved for respirato-
ry protection against particulates under
the 42CFR84 P100 classification
(99.97% efficient against all particulate
aerosols including oil-based aerosols).
Available in packages of ten.
The P/N 476089 Filter Cartridge
Holder is not approved for use with
the air-purifying, Combination Duo-
Flo or Pressure Demand Regulator
configurations of the Abrasi-Blast
respirator.
1. To install the filter cartridges in the
cartridge holder:
a. Unscrew the bezel ring.
b. Separate the holder halves.
c. Screw the filter cartridge in until
it is firmly seated on the gasket.
d. Place the holder halves
together and tighten the bezel
ring to assure a good seal at
the gasket.
2. To connect the cartridge holder
(with filter cartridge installed) to
the respirator:
a. Disconnect the breathing tube
from the valve-connector or
vortex tube.
b. Connect the holder’s female fit-
ting to the valve-connector or
vortex tube.
c. Be sure there is a gasket in the
breathing tube coupling nut.
d. Connect the breathing tube
coupling nut to the holder male
fitting.
e. Position the holder to fit com-
fortably on your hip.
ABRASI-BLAST PARTS
Consult the MSA Safety Equipment
Catalog for parts and part numbers.
Accessories/Parts List
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TAL 201 (L) Rev. 1 - 818366 15
Abrasi-Blast Hood Styles and Accessories
CARTRIDGE ASSEMBLY
Part No.
476089 Holder
464031 GMA Cartridge, Package of 10
464035 Type H Filter Cartridge, Package of 10
Flow Control Assy.
Hypolon
Abrasive Hood Facepiece Breathing Pressure Type Union
Mask Assy. (Medium) Tube Belt Supply Quick Supply Adapter
Pt. No. Pt. No. Style Pt. No. Pt. No. Pt. No. Pt. No. PSI Disconnect Hose Pt. No.
468720 468725 Shoulder 472666 470734 9961 463278 10-15 Snap-Tite Order Sep. 69542
468716 468724 Waist 472666 470734 9961 463278 10-15 Snap-Tite Order Sep. 69542
468722 468725 Shoulder 472666 470734 9961 460814 35-40 Snap-Tite Order Sep. 69542
468718 468724 Waist 472666 470734 9961 460814 35-40 Snap-Tite Order Sep. 69542
474264 468725 Shoulder 472666 475277 9961 463938 60-80 Snap-Tite Order Sep. 69542
474263 468724 Waist 472666 475277 9961 463938 60-80 Snap-Tite Order Sep. 69542
485755 468725 Shoulder 485768 470734 9961 473741 65-85 Snap-Tite Order Sep. 69542
485751 468724 Waist 485768 470734 9961 473741 65-85 Snap-Tite Order Sep. 69542
COLLAR ASSEMBLY
BELT (REQUIRED ACCESSORY)
WAIST-LENGTH MODEL
SHOULDER MODEL
PLUG
SOME STANDARD ABRASI-BLAST RESPIRATOR ASSEMBLIES
(Includes one lens cartridge (.12 untempered) and instruction manual)
Shoulder
Length Hood
Part No.
468725
Includes Collar
Facepiece and
Breathing Tube
Must Be Ordered
Separately
Collar Assembly
Part No.
468705
Is Included With
Hood Assembly
Plug
Part No.
465626
To Be Used
When The
Breathing
Tube Is Worn
Inside Hood
Waist
Length Hood
Part No.
468724
Includes Collar
Facepiece and
Breathing Tube
Must Be Ordered
Separately
473902 Vinyl 9961 Web
Support Belt Support Belt
Required for all Abrasi-Blast Assemblies
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16 TAL 201 (L) Rev. 1 - 818366
Facepiece Assemblies
Carton of 12 No. of Lenses One Cartridge
Part No. Description of Lens In Each Cartridge Part No. Application
473798 .09 thick untempered 3 473795 Medium abrasive blasting
473800 .09 thick tempered 3 473796 Same as above with added protection against breakage
due to rough handling
473802 .12 thick untempered 2 473797 Heavy abrasive blasting
two layers laminated
481742 .12 thick untempered 3 481714 Heavy abrasive blasting
two layers laminated
Demand (Single Valve)
SIZE RUBBER
SMALL MEDIUM LARGE
PART Model Model Model Hycar Silicone
NUMBER 7-434-2 7-434-1 7-434-3
473314 • •
473312 • •
473316 • •
PROTECTIVE LENS CARTRIDGES
Demand (Dual Valve)
SIZE RUBBER
SMALL MEDIUM LARGE
PART Model Model Model Hycar Silicone
NUMBER 7-410-2 7-410-1 7-410-3
472668 • •
472666 • •
472670 • •
Pressure Demand
SIZE RUBBER
SMALL MEDIUM LARGE
PART Model Model Model Hycar Silicone
NUMBER 7-780-2 7-780-1 7-780-3
485772 • •
485768 • •
485776 • •
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TAL 201 (L) Rev. 1 - 818366 17
Flow Control Devices
Complete Assembly
Valve-Connector Body Valve-Connector Body
Quick With Socket Assembly Less Socket Assembly
Disconnect High Pressure Low Pressure High Pressure Low Pressure
Components (35-40 psig) (10-15 psig) (35-40 psig) (10-15 psig)
Snap-Tite Aluminum 460814 463278 474022 474031
Snap-Tite Brass 471812 471816 474023 474032
Snap-Tite Stainless Steel 471813 471817 474024 474033
Foster Steel 471814 471818 474025 474034
Hansen Brass 471815 471819 474026 474035
Foster Brass 473828 473831 474027 474036
Hansen Stainless Steel 473829 473832 474028 474037
Duff-Norton Brass 473830 473833 474029 474038
Complete Vortex
Quick Assembly with Plug
Disconnect and Socket Assembly
Components (60-80 psig) Plug
Snap-Tite Aluminum 463938 66274
Snap-Tite Brass 474259 630307
Snap-Tite Stainless Steel 474260 629672
Foster Steel 474256 55716
Hansen Brass 474258 630313
Foster Brass 474257 629981
Hansen Stainless Steel 474261 628208
Duff-Norton Brass 474262 630310
ADJUSTABLE VALVE-CONNECTORS WITH COMPONENTS
NON-ADJUSTABLE VALVE-CONNECTORS WITH COMPONENTS
VORTEX TUBE WITH COMPONENTS
Complete Assembly
Valve-Connector Body Valve-Connector Body
Quick With Socket Assembly Less Socket Assembly
Disconnect High Pressure Low Pressure High Pressure Low Pressure
Components (35-40 psig) (10-15 psig) (35-40 psig) (10-15 psig)
Snap-Tite Aluminum 460829 463267 474001 474010
Snap-Tite Brass 471806 471810 474005 474014
Snap-Tite Stainless Steel 471807 471811 474006 474015
Foster Steel 471804 471808 474003 474012
Hansen Brass 471805 471809 474004 474013
Foster Brass 473822 473825 474007 474016
Hansen Stainless Steel 473823 473826 474008 474017
Duff-Norton Brass 473824 473827 474009 474018
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18 TAL 201 (L) Rev. 1 - 818366
Flow Control Devices
Combination Duo-Flo
Complete Duo-Flo
Valve Assembly with
Quick Disconnect Plug and Socket
Components Assy. (35-90 PSIG) Plug
Snap-Tite Aluminum 466077 66273
Snap-Tite Brass 476919 630306
Snap-Tite Stainless Steel 476920 629671
Foster Steel 469869 56549
Hansen Brass 476922 630312
Foster Brass 476918 473501
Hansen Stainless 476921 473502
Duff-Norton Brass 476923 630309
Locking Type
Snap-Tite Al. (Locking) 480814 479021
Snap-Tite Br. (Locking) 480816 479023
Snap-Tite St. St. (Locking) 480815 479022
CEJN Chrome (Locking) 480813 479020
Replacement Replacement
Pressure Demand Pressure Demand
Quick-Disconnect Regulator, complete Regulator, less
AL - Aluminum with male plug and plug and female
BR - Brass female socket socket
SS - Stainless Steel assembly assembly
Snap-Tite Aluminum 473741 470193
Snap-Tite Brass 473505 470193
Snap-Tite Stainless Steel 473506 470193
Duff-Norton 473509 470193
Hansen Brass 473508 470193
Hansen Stainless 473507 470193
Foster Steel 473503 470193
Foster Brass 473504 470193
Locking Type
Snap-Tite Al. (Locking) 479045 470193
Snap-Tite Br. (Locking) 479047 470193
Snap-Tite St. St. (Locking) 479046 470193
CEJN Chrome (Locking) 479044 470193
Pressure Demand Air-Line
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TAL 201 (L) Rev. 1 - 818366 19
PRESSURE GAUGE ASSEMBLY
AIR SOURCE
The Abrasi-Blast Hood requires a
pressure regulated source of clean,
respirable compressed air. The purity
of the air source is the responsibility
of the user. The respirator is approved
only when the air supplied to the res-
pirator meets the requirements of the
Compressed Gas Association Spec-
ification G-7.1-1989 for Quality Verifi-
cation Level (Grade) D Breathable Air.
AIR-SUPPLY HOSE
The respirator can be used with a
wide range of MSA air-supply hoses,
which can be interconnected up to a
maximum length of 300 feet. A maxi-
mum of 12 sections of air-supply hose
may be used in making up the maxi-
mum working length of hose. The
coiled hoses are considered to be the
indicated length, although actual
extended lengths can be less than
indicated. (Maximum of one section of
8, 15, or 25 ft. of coiled hose or 6
sections of 50 ft. coiled hoses). MSA
also offers an inlet pressure-gauge
assembly that enables a user to
check pressure at the inlet of the MSA
air-supply hose, thus assuring that the
air pressure is within the NIOSH
approved range. The gauge is sup-
plied with quick-disconnect fittings to
accommodate your particular air-line
system.
Part numbers for various MSA air-
supply hoses that can be used are
listed below.
Note: All air-supply hoses listed
below are 3/8” in diameter (hose ID).
Particles and contaminants can
enter an air-line respirator system
when air-supply hoses are discon-
nected and/or reconnected in a
contaminated atmosphere. This
could result in inhalation of conta-
minants. It is the user’s responsibili-
ty to determine the potential risk
and take the necessary precau-
tions, which may require prohibiting
disconnection or reconnection of
air-supply hoses in a contaminated
atmosphere. If in doubt DO NOT
disconnect and/or reconnect.
Failure to follow this precaution can
result in serious personal injury or
death.
MSA air-supply hoses have various
temperature limitations. Do not use
when inlet-air temperatures exceed
the limits specified for each hose
material.
PRESSURE-GAUGE
ASSEMBLY PLUG TYPE
Part No.
476734 SNAP-TITE
476735 FOSTER
476736 DUFF-NORTON
476737 HANSEN
476738 CEJN (locking type)
481377 SNAP-TITE
(locking type)
PART HOSE
NUMBER LENGTH (FT.) MATERIAL
481071 8 NEOPRENE
455020 15 NEOPRENE
455021 25 NEOPRENE
455022 50 NEOPRENE
481051 8 POLYVINYL CHLORIDE
471511 15 POLYVINYL CHLORIDE
471512 25 POLYVINYL CHLORIDE
471513 50 POLYVINYL CHLORIDE
484225 100 POLYVINYL CHLORIDE
491513 8 COILED NYLON
491514 15 COILED NYLON
491515 25 COILED NYLON
474043 50 COILED NYLON
RECOMMENDED
HOSE MATERIAL TEMP. LIMITS
Polyvinyl Chloride 32°F - 120°F
Neoprene -25°F - 212°F
Nylon -25°F - 120°F
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20 TAL 201 (L) Rev. 1 - 818366
INTERCONNECTING AIR-SUPPLY
HOSES
MSA air-supply hoses can be inter-
connected up to a maximum length of
300 feet without voiding the NIOSH
approval of the device. MSA offers
both threaded and locking-type quick-
disconnects to interconnect hoses.
The following threaded connector
assembly can be used to interconnect
sections of approved air-supply hose.
Check all hose connections to be
sure fittings are secure. This must
be done to ensure a continuous
flow of air. Failure to follow this pre-
caution can result in serious per-
sonal injury or death.
Do not use non-locking quick-dis-
connects to interconnect air-supply
hoses. Use only the threaded con-
nector (3/4-16 UNF) or the locking-
type quick-disconnects listed.
The CEJN chrome and SNAP-TITE
locking quick-disconnects shown
below may be used to interconnect
air-supply hoses. To connect, push
the plug and socket together. To sep-
arate, the plug and socket must be
pushed together and the sleeve
retracted from the plug.
CEJN Chrome (C)
SNAP-TITE Aluminum (AL)
QUICK-DISCONNECTS
Various quick-disconnect assemblies
that can be used with the system are
shown below. Quick-disconnects are
required to connect air-supply hoses
to the respirator. Additionally, locking-
type quick-disconnects can be used
to interconnect lengths of MSA air-
supply hose. Air-supply hoses can be
interconnected up to a maximum
length of 300 feet. Up to 12 sections
of hose can be used to make up the
maximum working length of hose.
Locking quick-disconnects easily con-
nect by pushing the plug and socket
together. To separate, the plug and
socket must first be pushed together
then the sleeve retraced from the
plug.
Interconnecting Air-Supply Hoses
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