MSA Cylinder Valve Setup guide

Cylinder Valve
TAL 807 (L) Rev. 6 © MSA 2008 Prnt. Spec. 10000005389 (I) Mat. 10042832
Doc. 10000015250
MAINTENANCE AND REPAIR

2
TAL 807 (L) Rev. 6 - 10042832
Item Part No. Description
80 872 3AL Aluminum, 5 cu ft.*
46 61 Hoop-wound, 5 cu ft.
807586 L-30 Stealth Carbon-wrapped
816115 L-30+ Stealth Carbon-wrapped, 60 cu ft.
807587 H-30 Stealth Carbon-wrapped, 5 cu ft.
807570 H- 5 Stealth Carbon-wrapped, 66 cu ft.
10035644 H- 5 Low-Profile, Stealth Carbon-wrapped, 66 cu ft.
1807588 H-60 Stealth Carbon-wrapped, 88 cu ft.
814806 3AL Aluminum, 5 cu ft.*
8111 Hoop-wound, 5 cu ft.
816 70 L-30 Stealth Carbon-wrapped
816 74 L-30+ Stealth Carbon-wrapped, 60 cu ft.
816 72 H-30 Stealth Carbon-wrapped, 5 cu ft.
816 73 H- 5 Stealth Carbon-wrapped, 66 cu ft.
10044832 H- 5 Low-Profile, Stealth Carbon-wrapped, 66 cu ft.
816 71 H-80 Stealth Carbon-wrapped, 88 cu ft.
2804 22 Warning Label
3471368 Label Lot No.
4 2845 Caution/Warning Label (3000 psig)
4888 4 Valve Assembly (2216 psig)
54 4884 Valve Assembly (3000 psig)
4888 Valve Assembly ( 500 psig)
680416 Cylinder Valve Inlet Tube
68542 O-Ring (2216 psig)
7633550 O-Ring (3000 psig)
630 26 O-Ring ( 500 psig)
68550 Safety Plug (2216 psig)
84 5636 Safety Plug (3000 psig)
473254 Safety Plug ( 500 psig)
968543 Drill Hex Head Socket Screw (Prior Design)
10 488858 Valve Insert Assembly
1533 Valve Insert Assembly
11 14438 Valve Stem (Prior Design)
48885 Valve Stem (Current Design)
12 488860 Valve Stem Washer
13 628 76 O-Ring (Current Design)
1 488862 Packing Gland (Current Design)
15 1728 Hand Wheel
16 83831 Spring
17 83731 Lock Nut
18 4 06 Protector Cap
Item Part No. Description
488771 Valve Body ( 500 psig) (Current Design)
19 488772 Valve Body (2216 psig) (Current Design)
45743 Valve Body (3000 psig) Valve Body (180°)
Valve Body (Prior Design)
501 Air Pressure Gauge (2216/3000 psig)
20 (Prior Design)
5278 Air Pressure Gauge (2216/3000 psig)
473250 Air Pressure Gauge ( 500 psig)
21 66835 O-Ring (Prior Design)
22 454544 Gland Ring (Prior Design)
23 801131 Gauge Guard
801140 Gauge Guard (Prior Design)
KITS
482225 Blow Out Disc Kit (2216 psig)
2 482226 Blow Out Disc Kit ( 500 psig)
4 4 28 Blow Out Disc Kit (3000 psig)
25 473 57 Packing Gland Kit (Prior Design)
CYLINDER VALVE ASSEMBLIES (LOW PRESSURE)
80 872 5 CU. FT. Aluminum (2216 psig) (Rated
30 Min.) (Current)
46 61 5.5 CU. FT. Hoop Wound Aluminum
(2216 psig) (Rated 30 Min.) (Current)
807586 66 CU. FT. Composite Carbon (2216 psig)
(Rated 30 Min.) (Current)
816115 60 CU. FT. Composite III Carbon
(3000 psig) (Rated 30 Min.) (Prior)
CYLINDER AND VALVE ASSEMBLIES (HIGH PRESSURE)
807587 5 CU. FT Composite Carbon ( 500 psig)
(Rated 30 Min.) (Current)
807570 66 CU. FT Composite Carbon ( 500 psig)
(Rated 5 Min.) (Current)
10035644 66 CU. FT. Composite Carbon ( 500 psig)
(Rated 5 Min.) (Current)
807588 88 CU. FT Composite Carbon/Fiberglass
( 500 psig) (Rated 60 Min.) (Current)
CYLINDER VALVE COMPONENTS

3TAL 807 (L) Rev. 6 - 10042832
Cylinder Valve
10
8
16
15
25
12
11
17
924
20
22
18
23
Prior Design
21
6
57
2
1
4
3
5
14
13
12
8
17
6
7
24
18
11
10
19
20
23
16
15
Current Design
70 - 75 ft. lbs.
Torque
(See page 12)
85 - 105 in. lbs.
Torque
(See page 7)
120 - 140 in. lbs.
Snoop
Snoop

CYLINDER VALVE
CYLINDER BURST DISC
MSA has chan ed its recommended installation proce-
dures for the cylinder valve burst sisc and safety plu for
current and prior desi ns.
Current Design:
The new installation procedure for the current desi n
reads as follows: Place a thin film of Snoop on the new
burst disc. Place the new burst disc on top of the new
asket. Be sure the asket and disc lay flat.
Prior Design:
The new installation procedure for the prior desi n reads
as follows: Place a thin film of Snoop on the new 4500
burst disc. Place the new burst disc on top of the new
asket. Be sure the asket and disc lay flat.
MSA has chan ed its recommended procedures for
torquin the cylinder valve safety plu .
The torque requirement in the chart for the custom 4500
safety plu is now 21-25 ft. lbs.
Certified personnel ONLY are authorized to receive
this publication. This publication is an extension of the
authorized maintenance procedures manual for the
apparatus described, and should be kept on file with
that manual.
Note: The procedures which follow apply only to the
cylinder valves listed below. A separate set of procedures
for more recently-introduced cylinder valves be ins under
current cylinder valve disassembly and repair.
(See the Introduction for Required Tools)
Ori inal Cylinder Valves
P/N 473664, 2216 psi Low Pressure and Dual-Purpose
P/N 494883, 3000 psi Low Pressure, P/N 473255
Hi h Pressure and Dual-Purpose
Before repairing the cylinder valve, bleed all air from
the cylinder. Open the cylinder valve 1/2 turn and leave
it open until all air is exhausted. Wear hearing protec-
tion if this is done in an enclosed area to avoid possi-
ble hearing damage. Do not attempt to repair the valve
if the cylinder pressure gauge shows pressure. If you
cannot relieve pressure by opening the cylinder valve
handwheel, loosen the safety plug (no more than 1/
turn). Failure to follow this warning can result in
severe personal injury or death. This warning is for all
procedures.
REMOVING AND ADJUSTING THE HANDWHEEL
ASSEMBLY
1. Use wrench to remove
the locknut and sprin .
Remove the handwheel
from the top of packin
land.
2. Place a 3/4" wrench on
the packin land flats.
Turn the land counter-
clockwise several turns
and remove it.
3. Replace the handwheel on the valve stem. Turn the
handwheel counter-clockwise 10 turns.
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TAL 807 (L) Rev. 6 - 10042832
Prior Design
CAUTION
WARNING

CYLINDER VALVE
4. Turn the valve upside-
down and remove the
stem, asket, and nylon
insert.
Note: If the insert shows wear, replace it.
REPLACING THE NYLON INSERT
1. Install a new nylon
insert into the valve
body usin the valve
stem. Thread the stem
fin er-ti ht (clockwise).
2. Place a new asket over the valve stem and seat it on
the lip in the valve body.
3. Thread the packin land into the cylinder valve body
until lit is fin er-ti ht.
4. Fin er-loosen the valve stem counter-clockwise until
the stem stops. Be sure that the packin land does
not turn.
5. Use a torque wrench
set at 120 to 140 in.
lbs. with a 3/4" socket
to ti hten the packin
land.
6. Place the handwheel on the stem and check the valve
for proper motion. The handwheel should move freely,
but with some resistance. Remove the handwheel.
7. Replace the handwheel and the sprin . Be sure that
the valve is fully open to allow the locknut to be
installed more easily. The valve stem square must fit
into the square hole in the handwheel.
8. Usin the handwheel
locknut wrench, press
the locknut a ainst the
sprin and ti hten
(clockwise).
9. Open and close the valve completely several times to
seat the stem, nylon insert, and the valve stem asket.
Perform a leak test to check all connections.
Note: The procedure for replacin burst discs is the same
for low pressure air masks and hi h pressure air masks,
However, wrench sizes, part numbers, and torque specifi-
cations are different (as noted).
REMOVING THE BURST DISC
1. Place a socket on the
safety plu hex flats an
turn the plu counter-
clockwise to remove
the safety plu .
Note: The procedures for removin and installin burst
discs are the same for all models of MSA apparatus.
However, part number, tools, and torque specifications do
vary. Refer to the followin chart for specific items.
5TAL 807 (L) Rev. 6 - 10042832
Burst Disc
MSA SCBA Socket Safety Torque &
Model Size Plug Ft/Lbs Gasket Kit
2216 psig 11/16” 68550 50 - 53 82225
3000 psig 3/ ” 95636 26 - 30 9 928
500 psig 9/16” 7325 21 - 25 82226

CYLINDER VALVE
2. Use a jeweler's screw-
driver to punch a hole
in the burst disc. Use
retainin rin pliers to
pull the disc out of the
cylinder valve body.
Discard the disc.
3. Use the O-rin removal tool or plastic stick to lift the
asket out of the cylinder valve body.
INSTALLING A NEW BURST DISC FOR 2216 OR 3000
PSIG
1. Insert a new asket into the cylinder valve.
2. Place a thin film of
Snoop on the new
burst disc.
3. Place new burst disc on top of the asket. Be sure
that asket and disc lay flat.
Be sure gasket, then burst disc, are installed in the
order described. Ensure threads of burst disc area and
safety plug threads are free of Christo-Lube. Failure to
install properly may cause burst disc malfunction, and
may result in serious personal injury or death.
DO NOT re-use the burst disc or the gasket. You may
change the burst rating.
4. Thread the safety plu into the cylinder valve body.
5. Use a torque wrench
with a socket to ti hten
the plu .
This completes the burst disc repair procedures.
CURRENT DESIGN 500 PSIG
Installing a New 500 Burst Disc
1. Insert a new asket into the cylinder valve body.
Be sure gasket, then burst disc, are installed in the
order described. Failure to install properly may cause
burst disc malfunction, and may result in serious per-
sonal injury or death. Do not re-use the burst disc or
the copper gasket.
2. Place a thin film of Snoop on the new 4500 Burst
Disc. Place the new burst disc on top of the new as-
ket. Be sure the asket and disc lay flat.
3. Thread the safety plu
into the cylinder valve
body. Use a torque
wrench and socket to
ti hten the plu to the
torque specified.
4. See the leak testin section. This completes the burst
disc repair procedure.
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TAL 807 (L) Rev. 6 - 10042832
CAUTION
WARNING
WARNING

CYLINDER VALVE
CYLINDER VALVE PRESSURE GAUGES
Low pressure and hi h pressure apparatus use an alu-
minum cylinder valve. The low pressure pressure au es
are secured from inside the valve body 2216 psi : P/N
473664; 3000 psi : P/N 494883. To remove the au e,
the cylinder valve must be disassembled. The hi h pres-
sure pressure au e uses a male thread which is threaded
into the cylinder valve body (P/N 473255). The cylinder
valve does not have to be disassembled.
Note: To remove a Low Pressure pressure au e the
burst disc must first be removed.
REMOVING THE CYLINDER VALVE GAUGE
1. Remove the rubber
au e uard. Insert a
5/32" allen wrench into
the screw. Turn the
wrench counter-clock-
wise until the screw is
completely out of the
cylinder valve body.
2. Pull the pressure au e
out of the cylinder
valve body.
3. Use the O-rin removal
tool to lift the O-rin
and land rin out of
the cylinder valve body.
Discard the O-rin . Be
careful not to scratch
the surface of the cylin-
der valve body.
INSTALLING A NEW LOW PRESSURE PRESSURE
GAUGE
1. Install a land rin by pressin it in place usin the
pressure au e. DO NOT use a sharp tool or you may
dama e the land rin .
2. Apply a thin film of Christo-Lube to the O-rin , then
place the O-rin inside the land rin and press them
into place usin the pressure au e. DO NOT use a
sharp tool or you may dama e the O-rin .
3. Check that the two
index screws on the
back of the pressure
au e are ti ht. Insert
the pressure au e into
the cylinder valve body
so that the au e nee-
dle points to the
threads of the cylinder
valve outlet.
4. Use a 5/32" allen wrench to insert the screw from the
opposite side of the cylinder valve body. Turn the
wrench clockwise to ti hten the au e.
5. Install a new burst disc, a new asket (Burst Disc and
Gasket Kit), and the safety plu .
DO NOT re-use the burst disc or the copper gasket.
You may change the burst rating.
REMOVING THE HIGH PRESSURE PRESSURE GAUGE
1. Remove the rubber au e protector. Unscrew and
remove bezel rin and lens. Store the lens in a safe
place.
2. Position the cylinder
valve so that the au e
is upside-down. If the
plastic center-post falls
out of the au e, apply
a thin film of Christo-
Lube to the part and
re-install it. Place the
au e wrench on the
au e flats. Turn the
au e counter-clock-
wise and remove it from the cylinder valve body.
3. Clean out the threads in the cylinder valve body to be
sure no tape residue remains.
7TAL 807 (L) Rev. 6 - 10042832
CAUTION

CYLINDER VALVE
REASSEMBLING OR INSTALLING A NEW HIGH PRES-
SURE PRESSURE GAUGE (P/N 732 9)
1. Apply pipe-sealin tape to au e threads. (See Note
#3).
2. Place the au e wrench on the au e flats. Turn the
au e clockwise to ti hten. Do not over-ti hten.
3. Position the au e so that the au e needle points to
the threads of the cylinder valve outlet.
4. Replace the lens in the bezel rin and ti hten the rin .
5. Replace the rubber au e protector.
6. Refer to Leak-Testin and check all connections.
This completes the pressure au e replacement proce-
dure.
REMOVING THE CYLINDER VALVE BODY FROM THE
CYLINDER
Bleed all air from the cylinder. Open the cylinder valve
handwheel 1/2 turn and leave it open until all air is
exhausted. Wear hearing protection if this is done in
an enclosed area to avoid possible hearing damage.
Do not remove the valve if the cylinder pressure gauge
shows pressure. If you cannot relieve pressure by
opening the cylinder valve handwheel, loosen the
safety plug (no more than 1/ turn). Failure to follow
this precaution may result in severe personal injury or
death.
1. Secure the cylinder in a suitable fixture.
2. Pull off the rubber pressure au e uard.
3. Place a 7/8" socket (12
point) or wrench on the
flats on the top of the
cylinder valve. Turn the
socket counter-clock-
wise until the cylinder
valve is completely out
of the cylinder.
4. To remove the O-rin
(P/N 68542 for 2216
psi valves; P/N
633550 for 3000 psi
valves; P/N 630926 for
4500 psi valves), roll
the O-rin over the
threads.
5. If the cylinder valve inlet tube is dama ed, the entire
cylinder valve must be replaced. The inlet tube is
"locked" with a non-removable thread sealant.
INSTALLING THE CYLINDER VALVE BODY IN THE
CYLINDER
(Low Pressure 2216 psi : P/N 473664 valve body; Low
Pressure 3000 psi : P/N 494883 valve body; Hi h
Pressure; P/N 473255 valve body)
1. Secure the cylinder in a suitable fixture.
2. Use a hi h intensity li ht. Inspect the inside of the
cylinder for contaminants. Remove any loose parti-
cles. Be sure that the cylinder interior is completely
dry.
DO NOT use the cylinder if it has an odor or is conta-
minated internally. Failure to follow this precaution
may result in severe personal injury or death.
3. Clean the O-rin sealin surface on the cylinder with a
clean, dry, lint-free cloth. Be sure this cylinder surface
is undama ed and free from contaminants, such as
dirt or tape residue.
4. Inspect the cylinder
neck area. Do not use
the cylinder if it has
scratches, cuts, or
rooves which may
prevent an air-ti ht
seal.
INSTALLING A NEW INLET TUBE
(P/N 80416) in a new cylinder valve:
1. Apply one drop of Loctite 290 to the inlet threads.
2. Thread the tube into the cylinder valve and hand-ti ht-
en usin pliers. Do not over-ti hten.
3. Set the valve aside for 4 hours to allow the sealant to dry.
4. Apply a thin film of Christo-Lube lubricant on a new
O-rin .
Apply Christo-Lube lubricant to the O-ring and the O-
ring groove just before installing the cylinder valve. Do
not store these parts after lubricating them. Christo-
Lube may collect dirt and/or contaminants.
8
TAL 807 (L) Rev. 6 - 10042832
WARNING
WARNING
CAUTION

CYLINDER VALVE
5. Apply two 1/16" diameter drops of Christo-Lube in the
O-rin roove at locations 180 de rees apart.
6. Place a plastic thread
protector or thin piece
of paper over the
threads, then roll the
O-rin to the bottom
(male thread) end of
the valve body. Rotate
the O-rin 1/2 to 3/4
turn to work the
Christo-Lube evenly
around the roove.
Remove the thread
protector.
7. Insert the cylinder valve
into the cylinder neck
slowly and carefully so
that the sealin surface
of the cylinder is not
dama ed by the tube
or sharp ed e of the
valve threads.
8. Use a torque wrench with a 13/16" socket to ti hten
the cylinder valve accordin to the followin table:
9. Refer to Leak-Testin and check all connections.
This completes the ori inal cylinder valve replacement
procedure.
9TAL 807 (L) Rev. 6 - 10042832
P/N ITEM REQUIRED
73255 Al. Cylinder Valve for High 70-75
Pressure (gray, 500 psig) ft. pounds
7366 Al. Cylinder Valve for Low 70-75
Pressure (black, 2216 psig) ft. pounds
9 883 Al. Cylinder Valve for Low 70-75
Pressure (3000 psig) ft. pounds
93998 Brass Cyl. Valve for 2216 psig 90-100
Steel Cyl., bright (silver) plated ft. pounds
60321 Brass Cylinder Valve for 5-50
Composite Cyl., 2216 psig, ft. pounds
dull, silver, cadmium plated
Current Design

CYLINDER VALVE
CURRENT CYLINDER VALVE DISASSEMBLY AND
REPAIR
Before repairing the cylinder valve, all air must be bled
from the cylinder. Open the cylinder valve handwheel
1/2 turn and leave it open until all air has been
exhausted. Wear hearing protection if this is done in
an enclosed area to avoid possible hearing damage.
Do not attempt to repair the valve is pressure is
shown on the cylinder pressure gauge. If pressure
cannot be relieved by opening the cylinder valve hand-
wheel, loosen the safety plug (no more than _ turn).
Failure to follow this precaution may result in serious
personal injury or death.
REMOVING THE PRESSURE GAUGE
1. Remove the rubber au e protector. Unscrew and
remove bezel rin and lens. Store the lens in a safe
place.
2. Position the cylinder valve so that the au e is
upside-down. If the plastic center-post falls out of the
au e, apply a thin film of Christo-Lube to the part
and re-install it. Place the au e wrench on the au e
flats. Turn the au e counter-clockwise and remove it
from the cylinder valve body.
3. Clean out the threads in the cylinder valve body to be
sure no tape residue remains.
REASSEMBLING OR INSTALLING A NEW PRESSURE
GAUGE
1. Apply pipe-sealin tape to au e threads. (See Note
#3).
2. Place the au e wrench on the au e flats. Turn the
au e clockwise to ti hten. Do not over-ti hten.
3. Position the au e so that the au e needle points to
the threads of the cylinder valve outlet.
4. Replace the lens in the bezel rin and ti hten the rin .
5. Replace the rubber au e protector.
6. Refer to Leak-Testin and check all connections. This
completes the pressure au e replacement procedure.
REMOVING THE HANDWHEEL
1. Usin the spanner
wrench, remove the
locknut and sprin .
Remove the handwheel
from the top of the
valve stem.
2. Place a 7/8" socket
(deep-well) on the
packin land flats.
Unscrew the packin
land from the valve
body. Pull the stem out
of packin land.
Remove the O-rin and
valve stem washer
from the packin land.
Note: The O-rin removal tool can be used to remove O-
rin from the packin land.
3. Place the valve stem
back in the valve body.
4. Replace the handwheel
on the valve stem. Turn
the stem until the slot
drops onto the insert.
Turn the handwheel
counter-clockwise until
the insert can be
removed.
Note: If the insert shows si ns of wear or dama e it must
be replaced.
10
TAL 807 (L) Rev. 6 - 10042832
WARNING