MSA Duo-Flo User manual

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The warranties made by MSA with respect to the product are
voided if the product is not used and serviced according to the
instructions in this manual. For any additional information rela-
tive to use or repair, call 1- 00-MSA-2222 during regular work-
ing hours.
This manual, including the warnings and cautions inside,
must be read and ollowed care ully by all persons who
use or maintain this product, including those who have
any responsibility involving its selection, application, ser-
vice or repair. This respirator will per orm as designed
only i used and maintained according to the instructions.
Otherwise, it could ail to per orm as designed and per-
sons who rely on this product could sustain serious per-
sonal injury or death.
WARNING
!
TAL 7012 (L) Rev. 2 © MSA 2007 Prnt. Spec. 10000005389 (F) Mat. 818369
Doc. 818369
™

2TAL 7012 (L) Rev. 2 - 818369
Contents
NIOSH Approval Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Special or Critical User Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Respirator Assemblies and Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-18
NIOSH APPROVAL INFORMATION
Cautions and Limitations
A- Not for use in atmospheres containing less than 19.5 percent oxygen.
B- Not for use in atmospheres immediately dangerous to life or health.
C- Do not exceed maximum use concentrations established by regulatory standards.
D- Air-line respirators can be used only when the respirators are supplied res-
pirable 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 user instructions.
G- If airflow is cut off switch to filter and/or cartridge and immediately exit to clean air.
H- Follow established cartridge and canister change schedules or observe ESLI to
ensure that cartridges and canisters are replaced before breakthrough occurs.
I- Contains electrical parts that may cause an ignition in flammable or explosive
atmospheres.
J- Failure to use and maintain this product properly could result in injury or death.
L- Follow the manufacturer’s User Instructions for changing cartridges and/or filters.
M- All approved respirators shall be selected fitted used and maintained in accor-
dance with MSHA OSHA and other applicable regulations.
N- Never substitute modify add or omit parts. Use only exact replacement parts
in the configuration as specified by the manufacturer.
O- Refer to User Instructions and/or maintenance manuals for information on use
and maintenance of these respirators.
S- Special or critical user instructions and/or specific use limitations apply. Refer
to User Instructions before donning.
S - Special or Critical User Instructions
1. This device does NOT supply oxygen. Use only in adequately ventilated
areas containing at least 19.5 percent oxygen.
2. This respirator must be used in conjunction with the proper canister or fil-
ter for protection against specific contaminants.
3. Do not use when concentrations of contaminants are unknown or immedi-
ately dangerous to life or health (IDLH). (See the respirator NIOSH approval
matrix to determine if this device can be used for escape from those con-
centrations.)
4. Do not use when appropriate exposure limit (OSHA, PEL, NIOSH REL,
ACGIH TLV, etc.) is not known or when it is below the odor threshold or any
other established warning level for the contaminant.
WARNING
!

5. Leave area immediately if:
a. Breathing becomes difficult;
b. Dizziness or other distress occurs;
c. You taste or smell contaminant;
d. You experience eye, nose or throat irritation.
6. Use strictly in accordance with instructions, labels and limitations pertain-
ing to this device.
7. This respirator may not provide a satisfactory seal with certain facial char-
acteristics, such as beards or large sideburns, that prevent direct contact
between the skin and the sealing surface of the facepiece. Do not use this
facepiece if such conditions exist.
. Never alter or modify this device.
9. This respirator is for use by trained and qualified personnel only.
10. Do not use for firefighting.
11. Do not use as an underwater device.
12. Thoroughly check out the apparatus on receipt prior to use.
13. The air delivered to the air supply hose of this device must be respirable
and of a purity equal to at least Grade D Gaseous Air of Compressed Gas
Association Commodity Specification for Air. G-7.1.
14. Do not use compressed oxygen with this device.
15. Use only the listed hose lengths and air pressure range.
Failure to follow these precautions can result in serious personal injury or
death.
APPLICATION and OPERATING PRINCIPLE
The Duo-Flo Respirator is a combination air supplied respirator and air purifying
respirator. It is approved by NIOSH for use with either a particulate filter or a chin
style gas mask canister for respiratory protection against specific contaminants.
See the Approval Matrix for specific protection provided.
The air supplied mode of operation enables the user to work for long periods of time
in contaminated atmospheres without depleting the filter or canister. The air purify-
ing mode of operation can be used for entry egress and moving from station to
station in a contaminated atmosphere. It can also be used for continuous use when
an air supply is not available. The Duo-Flo Respirator is not for use in atmospheres
containing less than 19.5 percent oxygen. Also the Duo-Flo Respirator is not for
entry into immediately dangerous to life or health (IDLH) atmospheres.
Constant Flow Type (Advantage®4000, Ultravue®, and Ultra Elite®Facepieces)
— During use the air supplied mode of operation prevails as long as the user is
connected to an air source. The air purifying mode of operation is entered auto-
matically if the air-line is disconnected or if the air source is lost for any reason.
Pressure Demand Type (Ultravue and Ultra Elite Facepieces) — During use the
D/PD exhalation valve must be in the FILTER/CANISTER position when using the
respirator in the air purifying mode of operation. When the air-line is connected the
TAL 7012 (L) Rev. 2 - 818369 3

user must switch the D/PD exhalation valve to the AIR-LINE position to use the res-
pirator in the air supplied mode of operation. When the air-line is disconnected or if
the air source is lost for any reason the user must switch the D/PD exhalation valve
back to the FILTER/CANISTER position to again use the respirator in the air purify-
ing mode of operation.
Inhaled air enters the respirator either through the filter or canister or from the air-
line. The inhaled air passes over the facepiece lens keeping it free from fog before
it is taken into the lungs. Exhaled air leaves the facepiece through the exhalation
valve and consequently is not rebreathed. A check valve prevents the exhaled air
from passing out through the filter or canister.
Note: Training on the Pressure Demand Duo-Flo Respirator should include a brief
familiarization period where the employee is allowed to use the device in both
modes. This will allow the employee to recognize the higher breathing resistance
associated with the air-line position of the D/PD exhalation valve and allow him/her
to practice switching the valve from one position to the other.
Respirator Use Limitations
The wearer must comply with the following MSA respirator use limitations:
1. Maximum Use Concentration
Do not exceed ANY of the applicable maximum use concentrations listed
below:
4TAL 7012 (L) Rev. 2 - 818369
RESPIRATOR RESPIRATORS WITH
TYPE ULTRA FILTER®OR RESPIRATORS WITH
OPTIFILTER®XL FILTER CARTRIDGES CANISTERS
RESPIRATOR
USE FULL FACEPIECE HALF MASK FULL FACEPIECE ONLY
Routine Use in Air-Supplied • 1 000 times • 10 times • 1 000 times Exposure
Mode Only - including entry Exposure Limit Exposure Limit Limit (combined for all
continuous use and non- • IDLH • IDLH contaminants present)
emergency egress • IDLH (for any
contaminant present)
Gas/Vapor Contaminants
• Canister Escape Limit
Particulate Contaminants
• High Efficiency Filter:
1000 times Exposure
Limit
• Non-High Efficiency
Filter:
100 times Exposure Limit
Routine use in air-purifying • 100 times • 10 times • 100 times Exposure Limit
mode - including entry Exposure Limit Exposure Limit • IDLH
continuous use non- • IDLH • IDLH • Canister Escape Limit
emergency egress and/or
moving from station-to-station
Emergency Escape in Air- • Unlimited • Unlimited Gas/Vapor Contaminants
Purifying Mode • Canister Escape Limit
Particulate Contaminants
• Unlimited

2. The limitations outlined in the applicable NIOSH approval.
3. Any applicable limitation contained in a standard established by a regulatory
agency (such as OSHA) with jurisdiction over the wearer.
4. Do not wear for protection against substances with poor warning properties or
those which generate high rates of reaction with sorbent material in the canister.
5. Mixtures of Contaminants — NIOSH allows this respirator to be used for pro-
tection against a mixture of contaminants that are present simultaneously or
alternately against one contaminant then another (using the same canister) if the
mixture meets the following conditions:
a. The canister must be approved for all contaminants present.
b. NIOSH permits mixing of the following contaminants: organic vapors acid
gases ammonia chlorine dioxide hydrogen sulfide and carbon monoxide.
c. Particulates can be mixed with any other particulate or any gas or vapor for
which the canister is approved.
d. Contaminants present simultaneously must be below IDLH levels for the
specific contaminants. 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).
Time Use Limitation
Canisters with an N95 filter shall be limited to 8 hours of use (continuous or inter-
mittent) against particulates. [Service time can be extended by performing an eval-
uation 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 is provided in
MSA’s Response®Respirator Selector (available online at www.msanet.com):
• American Conference of Governmental 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 Governmental Industrial Hygienists (ACGIH) publish-
es the following information to determine the TLV of a mixture.
First determine the total concentration of the chemical mixture (CMixture) from the
individual contaminant concentrations (C1 C2 C3 ...) using the following formula:
CMixture = C1+ C2+ C3+ ...
The TLV of the mixture is found by using the following formula where T1 T2 T3 ...
are the individual contaminant TLVs and C1 C2 C3 ... are the individual contami-
nant concentrations:
TAL 7012 (L) Rev. 2 - 818369 5

Only use these equations if the contaminants present are actually mixed. Some
substances do not mix and may be present separately for example in pockets or
at different levels. In that case the lowest TLV of the substances present must be
used to determine the appropriate respirator category for protection against all con-
taminants present.
See MSA’s Response Respirator Selector (available online at www.msanet.com) for
additional information.
RESPIRATOR FIT TEST
A qualitative or quantitative respirator fit test must be carried out for each wearer of
this respirator to determine the amount of protection it will provide. Respirator fit
tests are explained fully in the American National Standard for Respiratory
Protection ANSI Z88.2 which is published by the American National Standards
Institute 11 West 42nd Street New York New York 10036.
Quantitative Test
If a quantitative fit test is used a fit factor that is at least 1 000 for a full facepiece
respirator and 100 for a half-mask respirator shall be obtained before that respira-
tor is assigned to an individual.
Qualitative Test
If a qualitative fit test is used only validated protocols are acceptable. The individ-
ual must pass a test designed to assess a fit factor of at least 1 000 for a full face-
piece respirator and 100 for a half-mask respirator.
Duo-Flo Respirators must be qualitatively or quantitatively fit tested in a negative-
pressure mode. This will cover use of the respirator in both air-purifying and air-sup-
plied modes of operation.
The user must perform a respirator fit test and follow all warnings and limita-
tions specified. Failure to do so can result in serious personal injury or death.
BEFORE USE
1. Make sure certain conditions of exposure are (a) within the limits for which the
device is approved (see appropriate NIOSH approval plate) or (b) within the lim-
its established by MSA for the particular cartridge (see cartridge label).
6TAL 7012 (L) Rev. 2 - 818369
WARNING
!

Do not use in areas which are not ventilated. Do not use in atmospheres con-
taining less than 19.5 percent oxygen or in atmospheres immediately danger-
ous to life or health. If oxygen concentration sufficient to support life is ques-
tionable use self-contained breathing apparatus only.
DO NOT wear for protection against organic vapors with poor warning prop-
erties or those which generate high heats or reaction with sorbent materials
in the canister. Failure to follow this warning can result in serious personal
injury or death.
DO NOT use the Advantage 4000 Facepiece w/chin canisters P/Ns 15993,
15995, 15996, 1599 , 15999, and 16051. Failure to follow this warning can
result in serious personal injury or death.
2. Wear impermeable protective clothing for exposure to gases and vapors which
can poison by skin absorption.
3. Assure that a source of air is available which conforms to the requirements as
specified in the “air-supply” section.
4. Assemble apparatus as follows:
a. Connect filter cartridge or canister to coupling nut on Duo-Flo adapter check
valve.
b. Attach breathing tube between Duo-Flo adapter tee and facepiece.
5. Don and adjust in fresh air only as described in the “Fitting the mask” section.
Check facepiece tightness as outlined in the “Test for Tightness” section.
6. If a canister is being used remove the seal from the bottom before entering a
contaminated atmosphere. See Replacing Filter/Canister section for replace-
ment information.
7. If a filter is being reused see Replacing Filter/Canister section.
DURING USE
When using Duo-Flo Respirator with air-line disconnected the dust cover must be
placed onto the air-line quick disconnect fitting (Foster steel or SnapTite fittings
only).
Return to fresh air immediately if leakage is detected by smell taste or eye nose
or throat irritation or any feeling of nausea dizziness or ill being develops.
AFTER USE
1. Replace seals on canister if reusable.
2. Check condition of apparatus. Clean and replace any necessary parts.
3. Store apparatus in clean dry location.
TAL 7012 (L) Rev. 2 - 818369 7
WARNING
!
WARNING
!

FITTING THE MASK
Full Facepiece (All types)
Pull out headband straps especially the “FRONT” or forehead strap so that its end
is at the buckle then grip facepiece between thumb and fingers insert chin well into
the lower part of facepiece and pull headbands back over head. To obtain a firm
and comfortable fit against the face at all points adjust the headbands as follows:
1. See that straps lie flat against head.
2. Tighten lower or “Neck” straps.
3. Tighten the “SIDE” straps. (Do not touch forehead or “FRONT” strap).
4. Place both hands on headband pad and push it towards the neck.
5. Repeat operations 2 and 3.
6. Tighten forehead or “FRONT” strap a few notches if necessary.
Half-Facepiece (Comfo only)
Fit facepiece on nose bridge making sure that you are able to breathe through nose.
Then swing bottom of facepiece into contact with the chin.
When using elastic or rubber headbands position headbands with longest straps
above the ears and over the crown of the head and headbands with shortest straps
below the ears and around nape of the neck. When using cradle headband posi-
tion cradle headband around the crown of the head and bottom headbands below
the ears and around the nape of the neck.
Then adjust the straps for a comfortable fit by moving adjustment slides to length-
en or shorten straps. Adjust the straps just snug enough so that no air leaks around
the facepiece. It is not necessary to pull the straps so tight that the the respirator
digs into the face.
TEST FOR TIGHTNESS
The facepiece must be subjected to the following tightness test before each use.
With air-line disconnected test the apparatus facepiece for tightness by holding the
hands tightly over the inlet(s) of the filter or canister. Inhale gently so that the face-
piece collapses slightly and hold the breath for ten seconds. The facepiece will
remain collapsed while the breath is held providing the assembly is gas tight. If any
leakage is detected around the facial seal readjust head harness straps and repeat
test until there is no leakage. If other than facial seal leakage is detected the con-
dition must be investigated and corrected before another test is made. The face-
piece must pass the tightness test before the user should attempt to enter any toxic
atmosphere.
REPLACING FILTER/CANISTER (Air-Purifying Configurations)
The length of time the P100 filter or canister will give protection depends on the
concentration of the contaminant and the rate of breathing while in the air-purifying
mode of operation. The N95 filter is effective for 8 hours of use (continuous or inter-
mittent). [Service time can be extended by performing an evaluation in the specific
8TAL 7012 (L) Rev. 2 - 818369

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
200mg.] Follow established filter and canister change schedules or observe ESLI to
insure the filters and canisters are replaced before breakthrough occurs. User
instructions should also reflect this change.
Remove the exhausted filter or canister and examine the gasket in the coupling 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 fol-
low this warning can result in serious personal injury or death.
The bottom seal on the canister should be replaced after each use.
S-Special or Critical Users Instructions
AIR-SUPPLY HOSE
1. Air Supply Hose - Any combination of the following air supply hoses which does
not exceed 300 feet may be used:
Part No. 455020 - Hose Neoprene 15 ft. Brass Model No. 7-665-1
Part No. 455021 - Hose Neoprene 25 ft. Brass Model No. 7-665-1
Part No. 455022 - Hose Neoprene 50 ft. Brass Model No. 7-665-1
Part No. 471511 - Hose PVC 15 ft. Brass Model No. 7-664-1
Part No. 471512 - Hose PVC 25 ft. Brass Model No. 7-664-1
Part No. 471513 - Hose PVC 50 ft. Brass Model No. 7-664-1
Part No. 474043 - Hose Coiled Nylon 50 ft. Model No. 5-511-1
Part No. 481051 - Hose PVC 8 ft. Brass
Part No. 481071 - Hose Neoprene 8 ft.
See Air Hose Connection Instruction Sheet P/N 995602 for possible assemblies
which may be used to connect air supply hoses and valves.
The maximum number of hose sections that may be used in making up the
maximum length of hose is as follows:
When connecting hoses sing Locking Quick-Disconnects only one section of 8
ft. or 15ft. hose may be used.
• 3/8” Low Pressure (10 psig - 15 psig) Constant Flow Assembly may use a
maximum of 2 sections of 3’8” air supply hose in making up the maximum
length of hose.
• 3/8” High Pressure (35 psig - 40 psig) Constant Flow Assembly may use a
maximum of 12 sections of 3//8” non-coiled air supply hose in making up the
maximum length of hose. A maximum of 6 sections of coiled hose may be
used.
TAL 7012 (L) Rev. 2 - 818369 9
WARNING
!

2. Pressure -
a. Constant Flow - Air must be supplied to the inlet end of the air hose under
a pressure between 35-40 psig.
b. Pressure Demand (Ultravue and Ultra Elite Facepieces only) - Air must be sup-
plied to the inlet end of the air hose under a pressure between 65-85 psig.
3. Air Source - The purity of the air supply is the responsibility of the user. The res-
pirator is approved only when the air supplied meets the requirements of
Compressed Gas Association Specification G-7.1 for type I Class D Gaseous
Air. This requires that the air contain no more than 20 parts per million (ppm)
carbon monoxide not more than 1000 parts per million (ppm) carbon dioxide
and not more than 5 milligrams per cubic meter of oil vapor or oil particulates.
CLEANING AND DISINFECTING
The facepiece (with the canister removed) should be cleaned and disinfected after
every use with MSA’s Confidence Plus®Cleaning Solution (P/N 10009971).
1. Make a solution following the instructions.
2. Immerse soiled equipment in the solution and clean gently with a soft brush until
clean. Take care to clean the exhalation valve in the facepiece and all other parts
that exhaled air contacts.
3. Rinse in plain warm water (maximum 110°F.) and then dry. None of the metal
plastic rubber leather cloth or glass parts will be adversely affected by the
cleaning solution.
Cleaning and Disinfecting at or below 110°F will avoid possible overheating
and distortion of parts of the respirator assembly, which would require
replacement.
Instructions for Disassembling and Cleaning the D/PD Valve
1. Remove D/PD valve (Ultravue Facepiece only) by carefully pulling valve from
rubber of facepiece.
2. Remove the three screws from around the outside of the valve. Do not attempt
to remove the screw in the bottom of the valve. Remove plunger assembly and
spring from the body assembly.
3. To clean follow instructions above.
4. If any parts of the D/PD valve are cracked torn or in any way damaged the
valve must be replaced.
5. For reassembly:
a. Insert spring back into body assembly. Push plunger assembly into the body
assembly and line up the grooves with the holes. Thread the three screws
securely into the assemblies. Turn the D/PD valve between the in and out
positions to see if the valve is functioning.
b. Install D/PD valve into the facepiece so that the groove on the valve is insert-
ed into the exhalation valve hole under the chin cup of the facepiece. Make
sure that the large portion of the valve is on the outside. Align the inside oval
of the valve so that it does not interfere with the inlet assembly or chin cup.
10 TAL 7012 (L) Rev. 2 - 818369

MAINTENANCE
This apparatus must be kept in good condition to function properly. When any part
shows evidence of excessive wear or damage it must be replaced immediately
with the proper part. Extra parts should be readily available.
This apparatus should be stored in a clean dry location when not in use.
DO NOT enter any atmosphere with this respirator unless you know that:
1. You have read, understood and followed all instructions and warnings per-
taining to the respirator.
2. The respirator and conditions meet the requirements outlined.
3. The canister is the proper type for the contaminant or contaminants present.
4. The amount of oxygen is sufficient to support life (at least 19.5 percent oxy-
gen by volume at sea level). Do not use if oxygen concentration sufficient
to support life is questionable.
5. Respirator does not leak (see Test for Tightness).
6. Canister does not need replacing. Discard exhausted canister.
Failure to follow this warning can result in serious personal injury or death.
TAL 7012 (L) Rev. 2 - 818369 11
WARNING
!

12 TAL 7012 (L) Rev. 2 - 818369
Duo-Flo Constant Flow Respirator Assemblies
Chin Canister Type

FACEPIECE
(SEE PAGES 17, 18)


56651 BREATHING TUBE ASS'Y
ALTERNATE
57156 BREATHING TUBE ASS'Y
DUO-FLOW AIR-LINE
ADAPTER ASSEMBLY
(SEE PAGE 14)



Duo-Flow Constant Flow Duo-Flow Constant Flow
Air-line Adapter Air-line Adapter
Assemblies Complete Assemblies Less
Model 5-260 Quick Disconnect Socket
Part No. Part No. Type
466077 480022 Snap-Tite (AL)
476919 480025 Snap-Tite (Brass)
476920 480026 Snap-Tite (SST)
466058 480021 Foster (Steel)
476918 480024 Foster (Brass)
476922 480028 Hansen (Brass)
476921 480027 Hansen (SST)
476923 480029 Duff-Norton
479114 480030 Cejn Locking
479115 480031 Snap-Tite (AL)
Locking
TAL 7012 (L) Rev. 2 - 818369 13
PLUG
(SEE PAGE 13)

DUST COVER
P/N FITTING TYPE
486289 SCHRADER, FOSTER STEEL
634450 SNAPTITE, CEJN
634687 FOSTER-BRASS, HANSEN SST
634686 HANSEN-BRASS




AIR-LINE HOSE (NOT SUPPLIED)
(SEE PAGE 9)
9961 BELT, NYLON
473902 BELT, PVC
487446 BELT, COTTON


QUICK-DISCONNECT
(SEE PAGE 13)
84930 THREADED INSERT
57909 CLAMP
57909 CLAMP
15756 NUT
17554 BREATHING
TUBE INSERT
3532 GASKET
469713 BREATHING TUBE
83026 BELT CLIP
*DUO-FLO VALVE
*ADAPTER *SCREEN
*CHECK VALVE
65536 BELT CLIP
SCREWS (2 REQ'D)
*
485673 DUO-FLO VALVE ASS'Y
485669
ORIFICE
CONNECTOR
Duo-Flo Constant Flow Respirator Components

14 TAL 7012 (L) Rev. 2 - 818369
Duo-Flo Constant Flow
Quick Disconnects or Flow Control Devices

TAL 7012 (L) Rev. 2 - 818369 15
FACEPIECE (SEE PAGES 17, 18)
456651 BREATHING TUBE ASS'Y
457158 BREATHING TUBE ASS'Y
ALTERNATE
CHIN CARTRIDGE TYPE
Duo-Flo Constant Flow Respirator Assemblies

479118 480034 Hansen (SST)
Locking
Duo-Flow Regulator Duo-Flow Regulator
Assemblies Complete Assemblies Less
Model 7-679-1 Quick Disconnect Socket
Part No. Part No. Type
481934 481871 Snap-Tite (AL)
481937 481873 Snap-Tite (Brass)
481938 481874 Snap-Tite (SST)
481935 481870 Foster (Steel)
481936 481872 Foster (Brass)
481940 481876 Hansen (Brass)
481939 481875 Hansen (SST)
481941 481877 Duff-Norton
481943 481878 Cejn Locking
16 TAL 7012 (L) Rev. 2 - 818369
Duo-Flo Pressure Demand Respirator Components

TAL 7012 (L) Rev. 2 - 818369 17
Duo-Flo Pressure Demand
Quick Disconnects or Flow Control Devices

18 TAL 7012 (L) Rev. 2 - 818369
U travue®Demand Facepiece
Facepiece Assemb ies
Facepiece Components
SMALL — MODEL 7-203-2
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
471218 •••
471219 •••
471220 •••
471221 •••
471222 •• •
471223 •• •
471224 •••
471225 •••
480251 •• •
480252 •••
480253 •••
480254 •••
MEDIUM — MODEL 7-203-1
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
457126 •••
471209 •••
471212 •••
471213 •••
463872 •• •
471211 •• •
471214 •••
471215 •••
480247 •• •
480248 •••
480249 •••
480250 •••
LARGE — MODEL 7-203-3
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
471230 •••
471231 •••
471232 •••
471233 •••
471234 •• •
471235 •• •
471236 •••
471237 •••
480255 •• •
480256 •••
480257 •••
480258 •••

TAL 7012 (L) Rev. 2 - 818369 19
Facepiece Components
SMALL — MODEL 7-753-2
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
484579 •••
484560 •••
484581 •••
484582 •••
484583 •• •
484584 •• •
484585 •••
484586 •••
484592 •• •
484593 •••
484594 •••
484595 •••
MEDIUM — MODEL 7-753-1
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
484562 •••
484563 •••
484564 •••
484565 •••
484566 •• •
484567 •• •
484568 •••
484569 •••
484575 •• •
484576 •••
484577 •••
484578 •••
LARGE — MODEL 7-753-3
SPEAKING
RUBBER DIAPHRAGM NOSECUP
PART B ack B ack Green
NUMBER Hycar Si icone Hycar With Less With Less
484596 •••
484597 •••
484598 •••
484599 •••
484600 •• •
484601 •• •
484602 •••
484603 •••
484609 •• •
484610 •••
484611 •••
484612 •••
U travue®D/PD Facepiece
Facepiece Assemb ies

20 TAL 7012 (L) Rev. 2 - 818369