Kirby Morgan SuperFlow User manual

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-I
Contents
Maintenance and Inspection Procedures
APNDX-1 1.1 General
APNDX-1 1.2 Lubrication/Cleanliness
Supply Pressure Requirements & Tables
APNDX-4 1.1 Diver Work Rates
APNDX-4 1.2 Use Of Low Pressure Supply
Table
APNDX-5 1.3 Work Rate Expressed as
Respiratory Minute Volume
(RMV)*
APNDX-5 1.4 SuperFlow®/SuperFlow®
350 LP Compressor Supply
Table
APNDX-6 1.5 SuperFlow®/SuperFlow®
350 HP Regulated Supply Table
APNDX-7 1.6 REX®LP Compressor Supply
Table
APNDX-9 1.7 REX®HP Regulated Supply
Table
APNDX-9 1.8 455 & KM Diamond LP
Compressor Supply Table
APNDX-11 1.9 455 HP Regulated Supply
Table
APNDX-11 1.10 KM Diamond HP
Regulated Supply Table
APNDX-11 1.11 Standard Kirby Morgan
Surface Supply Pressure
Formula - Old Method
APNDX-11 1.11.1 Old Pressure Table
Calculation
APNDX-12 1.12 KM Diamond Exhaust Back
Pressure Flow Table
APNDX-12 1.12.1 Back Pressure System
APNDX-12 1.12.1.1 Topside Exhaust
Back Pressure System
Operation
APNDX-13 1.12.1.2 Calculating Work of
Breathing
APNDX-13 1.12.2 Instructions
APNDX-14 1.12.3 Abbreviations and
Formulas
APNDX-14 1.12.4 Table
Troubleshooting
APNDX-15 1.1 General
APNDX-15 1.2 Communication Malfunction
APNDX-16 1.3 One Way Valve Malfunction
APNDX-17 1.4 Side Block Malfunction
APNDX-17 1.5 Water Leakage Into Helmet
APNDX-18 1.6 Demand Regulator
Malfunction
APNDX-18 1.7 Emergency Gas Supply
Valve
Torque Specs
APNDX-20 1.1 SL 17B Torque Tables
APNDX-21 1.2 SL 17C Torque Tables
APNDX-22 1.3 SL 27 Torque Tables
APNDX-23 1.4 KM 37 Torque Tables
APNDX-25 1.5 KM 37SS Torque Tables
APNDX-26 1.6 KM 47 Torque Tables
APNDX-27 1.7 KM 57 Torque Table
APNDX-28 1.8 KM 77 Torque Tables
APNDX-29 1.9 KM 97 Torque Tables
APNDX-30 1.10 KM Diamond Torque
Tables
APNDX-32 1.11 KMB 18 Torque Tables
APNDX-33 1.12 KMB 28 Torque Tables
APNDX-34 1.13 Side Block Torque
Specications
APNDX-34 1.14 Regulator Torque
Specications

APNDX-II © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
APNDX-35 1.15 Communications Torque
Specications
APNDX-35 1.16 Neck Ring Torque
Specications
APNDX-36 1.17 Locking Collar Torque
Specications
APNDX-36 1.18 Miscellaneous Torque
Specications
APNDX-37 1.19 Notes on Torque
Specications
APNDX-37 1.20 Checklist, Maintenance,
and Pre-Dive Inspections

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-1
Maintenance and Inspection Procedures General
Maintenance and Inspection Procedures
1.1 General
The following section describes the maintenance
and inspection procedures that are used to com-
plete the Annual, Monthly and Daily Checklists,
to ensure optimum reliability and performance.
These procedures are additionally used in con-
junction with the daily pre and post dive main-
tenance checklists. The following service inter-
vals are the minimum recommended for helmets
being used under good conditions. Helmets and
BandMasks®used in harsh conditions, i.e., con-
taminated water, welding / burning operations,
or jetting may require more frequent servicing.
The intention of the maintenance and overhaul
program is to help maintain all helmet compo-
nents in good working order in accordance with
KMDSI factory specications. It will also help to
identify worn or damaged parts and components
before they affect performance and reliability.
Whenever the serviceability of a component or
part is in question, or doubt exists, replace it. All
mask and helmet components and parts have a
service life and will eventually require replace-
ment.
NOTE
The side block does not need to be removed
from the helmet or mask annually, provided
excessive internal corrosion is not present.
Kirby Morgan recommends that every three
years the side block assembly be physically
removed from the helmet or mask. For
fiberglass shells per “1.1.6 Separating the
Side Block Assembly from the Helmet/
Mask Shell” on page SB-7, and for stainless
steel shells per “1.1 Separating the Side
Block Assembly from the Helmet Shell”
on page SSB-1. Clean and inspect the
stud and securing screw, replace if bent,
stripped, or any damage is detected.
NOTE
All pipe thread fittings used on our helmets,
masks and components require sealing
with Teflon®tape. DO NOT USE LIQUID
SEALANT. When installing Teflon®tape on
pipe threads, apply the tape starting two
threads back from the end of the fitting.
Apply the tape in a clockwise direction under ten-
sion. Two wraps are all that is needed. Applying
more than two wraps of tape is not recommend-
ed. The use of more than two wraps could cause
excess Teon®tape to travel into the breathing
system.
Disassembly and reassembly of components is
explained in a step-by-step manner that may not
necessarily call out that all O-rings and normal
consumable items will be replaced. The manual
is written in this way so that if an assembly, com-
ponent, or part is being inspected or disturbed
between normal intervals, it is acceptable to re-
use O-rings and components provided they pass
a visual inspection . When conducting annual or
scheduled overhauls, all O-rings should be re-
placed. The side block should be removed from
the helmet at least every three years (or 400
operating hours) so that the stud and securing
screw can be inspected. All O-rings should be
lightly lubricated with the applicable lubricant.
1.2 Lubrication/Cleanliness
Helmets intended for use with breathing gas
mixtures in excess of 50% oxygen by volume,
should be cleaned for oxygen service. They must
only be lubricated with oxygen compatible lubri-
cants. All air supply systems must be ltered and
must meet the requirements of grade D quality
air or better. Helmet breathing gas systems/gas
train components used for air diving should only
be lubricated with silicone grease Dow Corning®
111®or equivalent where noted. KMDSI uses
Christo-Lube®at the factory for lubrication of all
gas train components requiring lubrication, and
highly recommends its use.
Before 1999, Kirby Morgan Dive Systems, Inc.,
used Danger and Warning Notices in the helmet
and mask owner’s manuals limiting the breath-
ing gas percentage to less than 23.5 percent oxy-
gen. This was due primarily to cleaning issues
in regards to possible re hazards and was in
compliance with the recommendations of the As-
sociation of Standard Test Methods (ASTM), Na-
tional Fire Protection Agency (NFPA), and the
Compressed Gas Association (CGA) as well as
other industry standards.
During the 1990’s, open circuit scuba use of en-
riched-air (Nitrox) by technical and recreational

APNDX-2 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
Lubrication/Cleanliness Maintenance and Inspection Procedures
divers became very popular, and as use increased,
so did the number of combustion incidents during
the mixing and handling of the breathing mix-
tures. These combustion incidents brought atten-
tion to the dangers and inherent risks associated
with oxygen and oxygen enriched gas mixtures.
Kirby Morgan cannot dictate or override regu-
lations or recommendations set forth by indus-
try standards or governing bodies pertaining to
enriched gas use. However, it is the opinion of
Kirby Morgan that breathing gas mixtures up to
50% oxygen by volume should not pose a signi-
cant increased risk of re or combustion in Kirby
Morgan helmet and mask low-pressure com-
ponents and does not warrant the need for the
stringent specialized oxygen clean post-sampling
and particulate analysis normally accomplished
for components used in high pressure oxygen
valves, regulators, and piping systems. The deci-
sion for using 50% has been primarily based on a
long history of operational eld use.
As long as Kirby Morgan helmets and masks are
cleaned and maintained in accordance with the
maintenance manual, the equipment should not
pose a signicant increased risk of a re or igni-
tion originating in the helmet or mask low-pres-
sure (<250 p.s.i.g. /<17.2 bar or less) components
when used with enriched gases of up to 50% oxy-
gen. However, CAUTION should be exercised
any time enriched gases are handled or used.
In general, helmets and masks used primarily
for mixed gas use are subject to far less oil and
particulate contamination than those used for air
diving. For this reason, helmets and masks com-
monly used with both air and enriched breath-
ing gases should be cleaned and maintained with
greater care and vigilance. It is important that
all internal gas-transporting components, i.e.,
side block, bent tube, and demand regulator as-
semblies remain clean and free of hydrocarbons,
dirt, and particulates. Whenever the equipment
is depressurized, all exposed ports or ttings
should be plugged/capped to help maintain for-
eign material exclusion.
Gas train components should be cleaned accord-
ing to the procedures outlined in the operations
manual at least annually and/or whenever con-
tamination is suspected or found. Helmet and
mask interior and exterior surfaces should be
cleaned at least daily at the completion of dai-
ly diving operations. Helmets and masks used
in waters contaminated with oils and other pe-
troleum or chemical contaminants may require
cleaning after each dive.
Helmet and mask components requiring lubrica-
tion should be lubricated sparingly with lubri-
cants approved for oxygen use such as Christo-
Lube®or equivalent oxygen compatible lubricant.
KMDSI highly recommends using Christo-Lube®,
and uses Christo-Lube® during the assembly of
all KMDSI gas train components.
BWARNING
Do not use lubricants of any kind on
the diaphragm or exhaust valves.
Use of lubricants can attract and hold
debris that could interfere with the
proper operation of the regulator.
Regardless of the approved lubricant used, never
mix different kinds of lubricants. Persons mix-
ing handling and working with breathing gases
should be properly trained in all aspects of safe
gas handling.
NOTE
During annual overhauls, all O-rings and
soft goods, i.e., valve seats and washers
should be replaced. KMDSI offers kits
that have all the necessary parts.
NOTE
The neck dam rubber need not be
replaced if the inspection reveals no
damage or significant wear and the
rubber components are not dried out.
NOTE
The oral nasal mask and oral nasal
valve requires replacement, only
if inspection reveals damage,
distortion, or signs of damage.
NOTE
All threaded fasteners and parts require
careful cleaning and inspection as well
as the mating parts. Replace any and
all threaded parts or components that
show signs of wear or damage.
KMDSI highly recommends a certied KMDSI
repair technician make all repairs and that only
genuine KMDSI repair and replacement parts be
used. Owners of KMDSI products that elect to do
their own repairs and inspections should only do
so if they possess the knowledge and experience.
All inspections, maintenance and repairs should
be completed using the appropriate KMDSI Op-
erations and Maintenance Manual.

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-3
Maintenance and Inspection Procedures Lubrication/Cleanliness
Persons performing repairs should retain all
replacement component receipts for additional
proof of maintenance history. Should any ques-
tions on procedures, components, or repairs
arise, please telephone Kirby Morgan Dive Sys-
tems, Inc., at [phone] or E-mail them at
[email protected] or telephone Dive Lab,
Inc., at [phone] or E-mail them at div-
[email protected].

APNDX-4 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
Diver Work Rates Supply Pressure Requirements & Tables
Supply Pressure Requirements & Tables
The corresponding low pressure supply table
should be used whenever low pressure compres-
sors are used or when using surface control pan-
els that are limited to outlet pressures within the
range of 220 psig or less.
It is important to insure the required outlet pres-
sure from the table can be maintained in a stable
manner at the surface to insure adequate supply
at depth. When used with high pressure con-
soles that can regulate pressures greater than
220 psig use the corresponding high pressure
regulated source supply table.
1.1 Diver Work Rates
The divers work rate, also known as respiratory
minute volume (RMV), is basically how hard the
diver breathes. As the diver’s physical exercise
increases, so does the ventilation rate. Proper
training teaches the diver to never push the work
rate beyond normal labored breathing. (This is in
the 30-50 RMV range). To put things in perspec-
tive, heavy work for a physically t person:
Swimming at one knot is about 38 RMV
Running at 8 miles per hour is about 50 RMV
Once the diver hits 55 RMV, he is entering the
extreme range. Many t divers can do 75 RMV
for one to two minutes providing the inhala-
tion resistive effort of the breathing system is
not much above 1-1.3 J/L. The divers work rate
should never be so heavy that the diver cannot
maintain a simple conversation with topside.
When the work rate gets into the moderately
heavy to heavy range 40-50 RMV the diver needs
to slow down!
Working to the point of being excessively winded
should be avoided at all costs!
Working at rates greater than 58 RMV underwa-
ter is extreme, and can pose hazards that are not
present when doing extreme rates on the surface.
When underwater, inhalation and exhalation re-
sistive effort increases due to the density of the
breathing gas and resistive effort of the equip-
ment. The increase in resistive effort can cause
an increase in blood level CO2because the diver
cannot ventilate as freely as when breathing at
the surface. When breathing air at the deeper
depths, nitrogen narcosis can mask CO2symp-
toms which can then snowball into even heavier
breathing, often resulting in confusion, panic,
and in rare cases muscle spasm, unconscious-
ness, sometimes resulting in death. In some rare
cases, high ventilation rates have been suspected
as the cause of respiratory barotraumas, includ-
ing arterial gas embolism. The possibility of suf-
fering a respiratory over ination event during
high work rates while underwater could be even
greater for divers that smoke, or have previously
known or unknown lung disease or respiratory
damage. The safest course for the diver is to keep
the equipment properly maintained for peak per-
formance and to know and understand the capa-
bilities and limitations of the equipment includ-
ing all breathing supply systems they use.
The output capability of the supply system, in-
cluding umbilicals, should be known to all that
use it and periodic tests should be done to ensure
ow capability.
1.2 Use Of Low Pressure Supply
Table
The low pressure supply tables were developed
to simplify calculation of supply pressure. In or-
der to get the required volume to the diver, you
need to have the proper supply pressure. The
table starts at 90 psig and increases in 10 psig
increments. The user simply selects the lowest
pressure that best represents the low cycling
pressure of the compressor being used. The table
basically shows the maximum depth that can be
attained while breathing at RMV’s (breathing
rates in liters per minute) listed. It is strongly
recommended that divers plan for a minimum
supply pressure that will allow the diver to work
at no less that 50 - 62.5 RMV.

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-5
Supply Pressure Requirements & Tables Work Rate Expressed as Respiratory Minute Volume (RMV)*
1.3 Work Rate Expressed as Respiratory Minute Volume (RMV)*
Work Load RMV Cubic Feet/Minute
(CFM)
Equivalent Land Based
Exercise
Rest 7-10 RMV 0.2 - 0.35 CFM
Light Work 10-20 RMV 0.35 - 0.7 CFM Walking 2 miles per hour
Moderate Work 20-37 RMV 0.7 - 1.3 CFM Walking 4 miles per hour
Heavy Work 37-54 RMV 1.3 - 1.9 CFM Running 8 miles per hour
Severe Work 55-100 RMV 1.94 - 3.5 CFM
* source: U.S. Navy Diving Manual
1.4 SuperFlow®/SuperFlow®350 LP Compressor Supply Table
Supply Pressure Requirements for Helmets & Masks equipped with SuperFlow®/SuperFlow®350 Non-
balanced regulators when used with low pressure compressors
Supply Pressure RMV Depth ATA Required
SLPM
w/20%
safety margin
Required
SCFM
FSW MSW
90 PSIG / 6.21 BAR 40 76 23 3.30 132.12 158.55 5.60
50 63 19 2.91 145.45 174.55 6.17
62.5 44 13 2.33 145.83 175.00 6.18
75 33 10 2.00 150.00 180.00 6.36
100 PSIG / 6.9 BAR 40 86 26 3.61 144.24 173.09 6.11
50 72 22 3.18 159.09 190.91 6.74
62.5 55 17 2.67 166.67 200.00 7.06
75 42 13 2.27 170.45 204.55 7.23
110 PSIG / 7.59 BAR 40 100 31 4.03 161.21 193.45 6.83
50 83 25 3.52 175.76 210.91 7.45
62.5 67 20 3.03 189.39 227.27 8.03
75 50 15 2.52 188.64 226.36 8.00
120 PSIG / 8.28 BAR 40 112 34 4.39 175.76 210.91 7.45
50 91 28 3.76 187.88 225.45 7.96
62.5 71 22 3.15 196.97 236.36 8.35
75 57 17 2.73 204.55 245.45 8.67
130 PSIG / 8.97 BAR 40 122 37 4.70 187.88 225.45 7.96
50 100 31 4.03 201.52 241.82 8.54
62.5 82 25 3.48 217.80 261.36 9.23
75 60 19 2.82 211.36 253.64 8.96
140 PSIG / 9.66 BAR 40 137 42 5.15 206.06 247.27 8.73
50 108 33 4.27 213.64 256.36 9.06
62.5 84 26 3.55 221.59 265.91 9.39
75 65 20 2.97 222.73 267.27 9.44
150 PSIG / 10.35 BAR 40 145 44 5.39 215.76 258.91 9.15
50 120 37 4.64 231.82 278.18 9.83
62.5 95 29 3.88 242.42 290.91 10.28
75 69 21 3.09 231.82 278.18 9.83

APNDX-6 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
SuperFlow®/SuperFlow® 350 HP Regulated Supply Table Supply Pressure Requirements & Tables
Supply Pressure RMV Depth ATA Required
SLPM
w/20%
safety margin
Required
SCFM
FSW MSW
160 PSIG / 11.04 BAR 40 157 48 5.76 230.30 276.36 9.76
50 124 38 4.76 237.88 285.45 10.08
62.5 100 31 4.03 251.89 302.27 10.68
75 76 23 3.30 247.73 297.27 10.50
170 PSIG / 11.73 BAR 40 167 51 6.06 242.42 290.91 10.28
50 135 41 5.09 254.55 305.45 10.79
62.5 107 33 4.24 265.15 318.18 11.24
75 86 26 3.61 270.45 324.55 11.46
180 PSIG / 12.42 BAR 40 181 55 6.48 259.39 311.27 11.00
50 148 45 5.48 274.24 329.09 11.62
62.5 115 35 4.48 280.30 336.36 11.88
75 93 28 3.82 286.36 343.64 12.14
190 PSIG / 13.11 BAR 40 190 58 6.76 270.30 324.36 11.46
50 154 47 5.67 283.33 340.00 12.01
62.5 122 37 4.70 293.56 352.27 12.44
75 100 31 4.03 302.27 362.73 12.81
200 PSIG / 13.8 BAR 40 192 59 6.82 272.73 327.27 11.56
50 166 51 6.03 301.52 361.82 12.78
62.5 132 40 5.00 312.50 375.00 13.25
75 102 31 4.09 306.82 368.18 13.01
210 PSIG / 14.49 BAR 40 212 65 7.42 296.97 356.36 12.59
50 175 53 6.30 315.15 378.18 13.36
62.5 137 42 5.15 321.97 386.36 13.65
75 108 33 4.27 320.45 384.55 13.58
220 PSIG / 15.18 BAR 40 220 67 7.67 306.67 368.00 13.00
50 182 56 6.52 325.76 390.91 13.81
62.5 147 45 5.45 340.91 409.09 14.45
75 111 34 4.36 327.27 392.73 13.87
1.5 SuperFlow®/SuperFlow®350 HP Regulated Supply Table
Depth Regulator Setting
Surface Gauge in P.S.I.G.
Regulator Setting
Surface Gauge in BAR
FSW MSW Minimum
P.S.I.G.
Maximum
P.S.I.G.
Minimum
Bar
Maximum
Bar
0-60 0-18 150 225 10.3 15.5
61-100 19-30 200 250 13.8 17.2
101-132 31-40 250 275 17.2 18.9
133-165 41-50 250 300 17.2 19.6
*166-220 51-67 300 325 20.6 22.4
*May not be capable of performing at 75 RMV deeper than 165 FSW.
Performance is based on a minimum of 75 RMV to 165 FSW (50 MSW) and 62.5 RMV to 220 FSW (67

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-7
Supply Pressure Requirements & Tables REX® LP Compressor Supply Table
MSW) using a ⅜" (9.5 mm) umbilical 600 foot (183 meters) long, made up of two 300 foot (91 meter) sec-
tions.
1.6 REX®LP Compressor Supply Table
Supply Pressure Sur-
face Gauge Reading
RMV
(Respiratory
Minute Volume)
Maximum Recommend-
ed Depth
Required
SCFM**
Required
SLPM**
FSW MSW
90 P.S.I.G . (6.21 BAR) 40 (heavy work) 104 32 7.0 198
50 (heavy work) 76 23 7.0 198
62.5 (severe work) 61 18.8 7.5 212
75 (severe work) 50 15.4 8.0 227
100 P.S.I.G. (6.9 BAR) 40 (heavy work) 108 33 7.25 205
50 (heavy work) 90 27 7.9 223
62.5 (severe work) 75 22.9 8.7 246
75 (severe work) 59 18 8.9 252
110 P.S.I.G. (7.59 BAR) 40 (heavy work) 117 35 7.7 218
50 (heavy work) 100 30 8.6 244
62.5 (severe work) 83 25 9.3 263
75 (severe work) 68 21 9.7 275
120 P.S.I.G. (8.28 BAR) 40 (heavy work) 127 38.7 8.2 232
50 (heavy work) 113 34 9.4 266
62.5 (severe work) 93 28 10 283
75 (severe work) 75 23 9.7 275
130 P.S.I.G. (8.97 BAR) 40 (heavy work) 145 44 9.1 258
50 (heavy work) 125 38 10 283
62.5 (severe work) 106 32 11 311
75 (severe work) 85 26 11.36 322
140 P.S.I.G. (9.66 BAR) 40 (heavy work) 160 48 10 283
50 (heavy work) 135 41 11 311
62.5 (severe work) 114 35 12 340
75 (severe work) 92.5 29 12 340
150 P.S.I.G. (10.35 BAR) 40 (heavy work) 170 52 10.5 297
50 (heavy work) 149 45 11.7 331
62.5 (severe work) 126 38 13 368
75 (severe work) 105 32 13.3 377
160 P.S.I.G . (11.04 BAR) 40 (heavy work) 186 57 11.3 320
50 (heavy work) 157 48 12.2 345
62.5 (severe work) 134 41 13.4 379
75 (severe work) 112 34 14 396

APNDX-8 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
REX® LP Compressor Supply Table Supply Pressure Requirements & Tables
Supply Pressure Sur-
face Gauge Reading
RMV
(Respiratory
Minute Volume)
Maximum Recommend-
ed Depth
Required
SCFM**
Required
SLPM**
FSW MSW
170 P.S.I.G. (11.73 BAR) 40 (heavy work) 203 62 12.2 345
50 (heavy work) 170 52 13 368
62.5 (severe work) 143 43 14 396
75 (severe work) 121 37 14.9 422
180 P.S.I.G. (12.42 BAR) 40 (heavy work) 219 67 13 368
50 (heavy work) 180 55 13.7 388
62.5 (severe work) 158 48 15.4 436
75 (severe work) 130 39 15.7 445
190 P.S.I.G. (13.11 BAR) 40 (heavy work) 220 67 13 368
50 (heavy work) 192 58 14.5 411
62.5 (severe work) 165 50 16 453
75 (severe work) 141 43 16.8 476
200 P.S.I.G. (13.80 BAR) 40 (heavy work) 220 67 13 368
50 (heavy work) 205 62 15.3 433
62.5 (severe work) 174 53 16.7 473
75 (severe work) 147 45 17.4 493
210 P.S.I.G. (14.49 BAR) 40 (heavy work) 220 67 13 368
50 (heavy work) 214 65.8 16 453
62.5 (severe work) 186 56 17.6 498
75 (severe work) 159 48 18.5 524
220 P.S.I.G. (15.18 BAR) 40 (heavy work) 220 67 13 368
50 (heavy work) 220 67 16.3 462
62.5 (severe work) 194 59 18.2 515
75 (severe work) 165 50 19 538
These values were derived from actual breathing simulator tests using an ANSI wet simulator with 600’
long umbilical 3/8’’ I.D (9.5mm) at Dive Lab, Inc. The respiratory work rates and test procedures used
are based on internationally recognized test practices and procedures.
** includes a 20% safety factor
NOTE
Most sustained work rates by professional divers average between 20 to 40 RMV. When
calculating supply requirements, KMDSI®recommends using no less than 40 RMV.
For more information, check the Dive Lab website, www.divelab.com.

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-9
Supply Pressure Requirements & Tables REX® HP Regulated Supply Table
1.7 REX®HP Regulated Supply Table
Depth Regulator
Setting P.S.I.G.
Regulator
Setting BAR
FSW MSW Optimum
P.S.I.G.
Maximum
P.S.I.G.
Optimum
BAR
Maximum
BAR
0-60 0-18 140 200 9.7 13.8
61-100 19-30 165 220 11.4 15
101-132 31-40 180 250 12.4 17
133-165 41-50 220 300 15 20.7
166-220 51-67 270 300 18.6 20.7
Performance is based on a minimum of 75 RMV to depths of 220 FSW (67 MSW) using a 3/8 (9.5mm)
umbilical 600 foot (183 meters) long, made up of two 300 foot (91 meter) sections.
1.8 455 & KM Diamond LP Compressor Supply Table
Supply Pres-
sure Surface
Gauge Read-
ing
RMV
(Respiratory
Minute Volume)
Maximum Recom-
mended Depth ATA Required
SLPM
w/20%
safety
margin
Required
SCFM
FSW MSW
90 P.S.I.G .
(6.21 BAR)
40 (heavy work) 101 30 4.06 162.42 194.91 6.88
50 (heavy work) 84 25 3.55 177.27 212.73 7.51
62.5 (severe work) 66 20 3.00 187.50 225.00 7.95
75 (severe work) 51 16 2.55 190.91 229.09 8.09
100 P.S.I.G.
(6.9 BAR)
40 (heavy work) 115 35 4.48 179.39 215.27 7.60
50 (heavy work) 97 29 3.94 196.97 236.36 8.35
62.5 (severe work) 77 23 3.33 208.33 250.00 8.83
75 (severe work) 62 19 2.88 215.91 259.09 9.15
110 P.S.I.G.
(7.59 BAR)
40 (heavy work) 130 39 4.94 197.58 237.09 8.37
50 (heavy work) 100 30 4.03 201.52 241.82 8.54
62.5 (severe work) 90 27 3.73 232.95 279.55 9.87
75 (severe work) 73 22 3.21 240.91 289.09 10.21
120 P.S.I.G.
(8.28 BAR)
40 (heavy work) 145 44 5.39 215.76 258.91 9.15
50 (heavy work) 125 38 4.79 239.39 287.27 10.15
62.5 (severe work) 101 30 4.06 253.79 304.55 10.76
75 (severe work) 83 25 3.52 263.64 316.36 11.17
130 P.S.I.G.
(8.97 BAR)
40 (heavy work) 157 47 5.76 230.30 276.36 9.76
50 (heavy work) 130 39 4.94 246.97 296.36 10.47
62.5 (severe work) 110 33 4.33 270.83 325.00 11.48
75 (severe work) 91 28 3.76 281.82 338.18 11.95

APNDX-10 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
455 & KM Diamond LP Compressor Supply Table Supply Pressure Requirements & Tables
Supply Pres-
sure Surface
Gauge Read-
ing
RMV
(Respiratory
Minute Volume)
Maximum Recom-
mended Depth ATA Required
SLPM
w/20%
safety
margin
Required
SCFM
FSW MSW
140 P.S.I.G.
(9.66 BAR)
40 (heavy work) 171 52 6.18 247.27 296.73 10.48
50 (heavy work) 145 44 5.39 269.70 323.64 11.43
62.5 (severe work) 120 36 4.64 289.77 347.73 12.28
75 (severe work) 103 31 4.12 309.09 370.91 13.10
150 P.S.I.G.
(10.35 BAR)
40 (heavy work) 187 57 6.67 266.67 320.00 11.30
50 (heavy work) 158 48 5.79 289.39 347.27 12.27
62.5 (severe work) 134 41 5.06 316.29 379.55 13.41
75 (severe work) 103 31 4.12 309.09 370.91 13.10
160 P.S.I.G .
(11.04 BAR)
40 (heavy work) 198 60 7.00 280.00 336.00 11.87
50 (heavy work) 176 54 6.33 316.67 380.00 13.42
62.5 (severe work) 147 45 5.45 340.91 409.09 14.45
75 (severe work) 125 38 4.79 359.09 430.91 15.22
170 P.S.I.G.
(11.73 BAR)
40 (heavy work) 203 61 7.15 286.06 343.27 12.13
50 (heavy work) 183 56 6.55 327.27 392.73 13.87
62.5 (severe work) 154 47 5.67 354.17 425.00 15.01
75 (severe work) 125 38 4.79 359.09 430.91 15.22
180 P.S.I.G.
(12.42 BAR)
40 (heavy work) 230 70 7.97 318.79 382.55 13.51
50 (heavy work) 196 60 6.94 346.97 416.36 14.71
62.5 (severe work) 163 50 5.94 371.21 445.45 15.73
75 (severe work) 144 44 5.36 402.27 482.73 17.05
190 P.S.I.G.
(13.11 BAR)
40 (heavy work) 239 73 8.24 329.70 395.64 13.98
50 (heavy work) 196 60 6.94 346.97 416.36 14.71
62.5 (severe work) 173 53 6.24 390.15 468.18 16.54
75 (severe work) 152 46 5.61 420.45 504.55 17.82
200 P.S.I.G.
(13.80 BAR)
40 (heavy work) 201 61 7.09 283.64 340.36 12.02
50 (heavy work) 220 67 7.67 383.33 460.00 16.25
62.5 (severe work) 187 57 6.67 416.67 500.00 17.66
75 (severe work) 156 48 5.73 429.55 515.45 18.21
210 P.S.I.G.
(14.49 BAR)
40 (heavy work) 273 83 9.27 370.91 445.09 15.72
50 (heavy work) 237 72 8.18 409.09 490.91 17.34
62.5 (severe work) 201 61 7.09 443.18 531.82 18.79
75 (severe work) 172 52 6.21 465.91 559.09 19.75
220 P.S.I.G.
(15.18 BAR)
40 (heavy work) 245 75 8.42 336.97 404.36 14.28
50 (heavy work) 203 62 7.15 357.58 429.09 15.16
62.5 (severe work) 194 59 6.88 429.92 515.91 18.22
75 (severe work) 181 55 6.48 486.36 583.64 20.62

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-11
Supply Pressure Requirements & Tables 455 HP Regulated Supply Table
1.9 455 HP Regulated Supply Table
Depth Regulator
Setting P.S.I.G.
Regulator
Setting BAR
FSW MSW Optimum
P.S.I.G.
Maximum
P.S.I.G.
Optimum BAR Maximum
BAR
0-60 0-18 100 150 7 10
61-100 19-30 125 150 8.6 10.3
101-132 31-40 175 225 12 15.5
133-165 41-50 200 250 14 17
166-190 51-61 225 275 15.5 19
191-220 58-67 225 300 15.5 20.6
Performance is based on a minimum of 75 RMV to depths of 220 FSW (67 MSW) using a ⅜" (9.5 mm)
umbilical 600 foot (183 meters) long, made up of two 300 foot (91 meter) sections.
1.10 KM Diamond HP Regulated Supply Table
Depth Regulator
Setting P.S.I.G.
Regulator
Setting BAR
FSW MSW Minimum
P.S.I.G.
Maximum
P.S.I.G.
Recommended
P.S.I.G.
Minimum
BAR
Maximum
BAR
Recommended
BAR
0-60 0-18 101 275 145 7 19 10
61-100 19-30 145 275 174 10 19 12
101-132 31-40 174 275 203 12 19 14
133-165 41-50 218 275 245 15 19 17
The proper supply pressure is important to ensure maximum overall breathing performance. The mini-
mum recommended and maximum supply pressures listed below will allow for at least a respiratory
work rate of 75 RMV at all depths listed.
When the diver is working at light to heavy work rates, (15–50 RMV) the minimum recommended Sup-
ply Pressure for a particular depth, should offer the smoothest overall performance. Use of the maxi-
mum pressure should only be needed at a depth of 165 fsw (50 MSW) or deeper in the event
the diver is breathing at the extreme work rate of 75 RMV or greater. The maximum supply
pressure is listed primarily due to European CE requirements which requires the maximum and mini-
mum supply pressures be listed. The minimum supply pressures for the depths listed below will allow
for a work rate of 75 RMV IAW the CE requirements of EN15333-1.
1.11 Standard Kirby Morgan Surface Supply Pressure Formula - Old
Method
1.11.1 Old Pressure Table Calculation
The old method of determining supply pressure was to multiply the dive depth by .445 PSI and then
add the over-bottom pressure called out in the depth ranges for the depth from the KMDSI operations
manual. The old method was based on a minimum RMV of 62.5. This method can still be used. The old

APNDX-12 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
KM Diamond Exhaust Back Pressure Flow Table Supply Pressure Requirements & Tables
method used the formula and called out over bottom pressures for depth as follows [(FSW x .445) + PSIG
for depth] from the table below.
Depth in Feet and Meters Over Bottom Pressure
0-60 FSW (0-18 MSW) 90 PSIG (6.2 Bar)
61-100 (18-30) 115 (7.9)
101-132 (30-40) 135 (9.3)
133-165 (40-50) 165 (11.4)
166-220 (50-67) 225 (15.5)
For more information on determining supply pressure related information check the Dive Lab web site
at www.divelab.com.
1.12 KM Diamond Exhaust Back Pressure Flow Table
1.12.1 Back Pressure System
When the KM Diamond surface return line helmet reaches 90 to 100 fsw (27–30.48 msw) in depth, the
combination of differential pressure and air density starts having a signicant effect on the exhalation
effort at heavy respiratory work rates above 60 RMV. The increase in exhalation effort at depths in ex-
cess of 100 fsw (30.48 msw) is primarily due to the high differential pressure on the 2nd stage exhaust
diaphragm on one side and the existing lower pressure found at the surface (topside). Another effect is
the ow resistance that is created in the surface return hose due to gas density.
To compensate for the increased gas density and high differential pressure, the topside end of the return
hose is attached to a back-pressure regulator system which allows a back pressure to be applied to the
hose, reducing this differential pressure, allowing the exhaust regulator second stage to operate with
less exhalation effort.
The amount of topside back pressure needed is based on what is required to enable the diver to breathe
and exhale at the extreme work rates above 60 RMV while maintaining the helmet exhalation pressure
below 18 mbr. The back pressure required is determined using a specially designed table. See “1.12.4
Table” on page APNDX-14.
The table and the topside back pressure system is desirable whenever the diver is breathing at heavy
work rates and diving deeper than 100 fsw (30.48 msw) to keep exhalation pressure below the KMDSI
18 mbr limit and to avoid gas from escaping from the overpressure relief and water purge valves in-
stalled on the helmet. Exhausting into the water in a contaminated water situation is not desirable and
defeats the primary purpose of using a surface return line helmet that vents to the surface (topside). A
topside back pressure system will prevent inadvertent activation of these valves on the KM Diamond.
1.12.1.1 Topside Exhaust Back Pressure System Operation
Minimum requirements for a Topside Exhaust Back Pressure System:
• A means to secure both the primary and stand by diver’s exhaust hose to the unit.
• A Flow meter per diver.
• Means of increasing and decreasing exhaust back pressure.
For optimal exhaust performance (minimum exhalation effort), the topside exhaust back pressure is set
according to the ow reading on the ow meter in use and the diver’s depth. As an example, a diver at a

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-13
Supply Pressure Requirements & Tables KM Diamond Exhaust Back Pressure Flow Table
depth of 100 fsw (30.48 msw) working at the extreme breathing rate of 60 RMV or higher without using
the topside back pressure control system, the exhalation pressure would be in a range of 14–16 mbr.
With the proper back pressure, it would be in the 6–8 mbr range.
The recommended topside exhaust control system must be capable of controlling the exhaust pressure
based on the depth and respiratory rate. One example of a topside back pressure system is the DL-
TSC-00 from Dive Lab, Inc. This system is a two-diver system and consists of a simple manifold assem-
bly with back pressure regulator, two ow meters, with shut off valves, and two 0–100 psig pressure
gauges. The divers exhaust hose connects to the topside exhaust system via a ½" brass quick connect.
The exhaust enters the adjustable back pressure regulator and is regulated according to the depth and
divers’ breathing rate as shown on the ow meters.
In addition, the ow meter system allows for the calculation of the diver’s respiratory work rate which
can be useful for planning air usage. By always beginning the dive with zero back pressure and adjust-
ing for optimal back pressure based on depth and ow optimizes for low exhalation effort, this minimizes
possible gas from escaping from the valve in the over pressure relief valve and Water Purge Assembly.
1.12.1.2 Calculating Work of Breathing
As previously mentioned, the topside back pressure exhaust system is not necessary for minimizing
exhaust pressure at depths less than 100 fsw (30 msw), however depending on the diver’s respiratory
work rate, it can be used starting at depths of 30 fsw to monitor the divers RMV.
As an example, a diver is at a depth of 60 fsw (18 msw) the exhaust ow on the ow meter shows a ow
of between 75–95 lpm. The console operator checks the exhaust table and selects the closest depth to
the diver’s depth and the peak ow, then slowly adjusts the regulator for a back pressure according to
the reading on the chart. With the ow meter showing a ow between 75–95 lpm and taking the high
number, 95 lpm and dividing it by the depth in ATA (2.8), it will give the respiratory work rate of the
diver also known as RMV. The calculation will look like this:
Depth (60 fsw +33 fsw) ÷ 33 = 2.8 ATA.
(95 lpm ÷ 2.8 ATA) = 33.9 RMV. The result is the diver’s work of breathing is 33.9 respiratory minute
volume which is considered to be in the heavy work category.
1.12.2 Instructions
Step 1
Determine Depth
Step 3
Find the closest matching ow
reading from the table
Step 4
Recommended Back Pressure
Regulator Setting
110 33.5 4.33 Flow LPM 45–65 85–110 115–150 150–185 180–235 230–290 280–350
BP (psig) 26–28 30–32 31–35 32–36 34–39 36–41 37–41
Step 2
Take the average reading
from your ow meter.
Example is 180 to 210.
The average ow is 195

APNDX-14 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
KM Diamond Exhaust Back Pressure Flow Table Supply Pressure Requirements & Tables
1.12.3 Abbreviations and Formulas
Abbreviations Formulas
ATA – Atmospheres Absolute (Depth + 33) ÷ 33 = ATA
FSW – Feet Sea Water FSW ÷ 3.28 = MSW
LPM – Liters Per Minute LPM ÷ ATA = RMV
MSW – Meter Sea Water
RMV – Respiratory Minute
Volume
To calculate RMV with the greatest accuracy, simply take the highest
and lowest ow reading, add them together, then divide by 2. Take the
result and divide by the diver’s depth in ATA.
1.12.4 Table
FSW MSW ATA
BP-Back
Pressure
(psig)
LPM-
Liters Per
Minute
RMV
10–15
RMV
20–24
RMV
30–34
RMV
37–40
RMV
48–50
RMV
60–63
RMV
73–75
10 3 1.3 Flow LPM n/a* n/a* n/a* 40–60 35–90 55–105 70–120
BP (psig) n/a* n/a* n/a* 1–2 1–2 1–2 1–2
20 6.09 1.6 Flow LPM n/a* n/a* 35–65 40–80 55–100 80–120 105–135
BP (psig) n/a* n/a* 1–2 1–2 1–2 2–3 3–5
30 9.1 1.9 Flow LPM n/a* 30–55 50–75 55–90 75–110 100–130 115–160
BP (psig) n/a* 1–2 2–3 2–3 3–4 3–5 4–6
40 12.2 2.21 Flow LPM 10–40 40–60 45–80 70–95 90–125 120–150 140–180
BP (psig) 2–3 3–4 4–5 4–6 5–7 6–8 7–9
50 15.2 2.51 Flow LPM 15–45 50–70 70–85 85–105 110–135 140–170 170–200
BP (psig) 3–4 4–6 5–7 5–8 7–9 8–13 9–13
60 18.3 2.82 Flow LPM 25–45 55–70 75–95 95–120 125–150 155–185 190–230
BP (psig) 5–7 7–9 9–10 9–12 11–14 11–14 15–18
70 21.3 3.12 Flow LPM 30–45 65–80 85–105 110–130 135–170 170–210 200–250
BP (psig) 7–8 10–13 13–14 13–17 15–18 15–20 16–20
80 24.4 3.42 Flow LPM 35–50 70–85 90–110 120–145 150–190 185–225 225–275
BP (psig) 11–13 14–16 16–18 17–19 18–22 20–23 21–24
90 27.4 3.72 Flow LPM 35–55 75–95 100–125 125–155 150–200 200–245 245–300
BP (psig) 17–20 21–24 22–25 24–28 26–30 27–31 27–33
100 30.5 4.03 Flow LPM 40–60 80–105 110–135 135–170 170–220 220–260 260–330
BP (psig) 22–24 25–28 28–31 28–32 29–33 33–36 31–37
110 33.5 4.33 Flow LPM 45–65 85–110 115–150 150–185 180–235 230–290 280–350
BP (psig) 26–28 30–32 31–35 32–36 34–39 36–41 37–41
120 36.6 4.63 Flow LPM 56–65 90–120 120–155 150–200 200–250 250–320 300–380
BP (psig) 29–32 32–35 34–37 35–40 37–43 39–44 39–45
130 39.6 4.93 Flow LPM 50–75 95–130 130–170 165–210 210–270 270–340 320–400
BP (psig) 32–35 36–40 39–42 39–43 42–47 44–48 44–50
140 42.7 5.24 Flow LPM 55–80 100–135 145–170 170–220 220–290 280–350 340–425
BP (psig) 33–35 38–41 40–44 42–45 43–48 45–50 45–51
150 46 5.55 Flow LPM 55–80 110–145 145–190 170–240 230–310 300–380 355–450
BP (psig) 37–40 41–44 44–47 43–49 47–51 50–56 50–57

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-15
Troubleshooting General
FSW MSW ATA
BP-Back
Pressure
(psig)
LPM-
Liters Per
Minute
RMV
10–15
RMV
20–24
RMV
30–34
RMV
37–40
RMV
48–50
RMV
60–63
RMV
73–75
160 49 5.84 Flow LPM 55–75 110–150 150–195 190–250 240–320 310–390 370–470
BP (psig) 38–41 42–45 43–45 45–50 48–51 49–54 51–58
165 50.3 6 Flow LPM 60–85 115–155 155–205 195–260 245–330 320–410 380–480
BP (psig) 41–43 44–48 47–50 49–53 50–55 53–59 54–60
*At this depth and RMV ow accuracy cannot be accurately determined.
Troubleshooting
1.1 General
Kirby Morgan diving helmets and BandMasks®are highly reliable life support equipment which should
not malfunction if proper preventative maintenance procedures are followed. Most problems encoun-
tered in using the equipment can be easily remedied. The following information covers most potential
operating difculties.
1.2 Communication Malfunction
VIDEO
How To Install an Earphone and Microphone on Communications Module (MWPC)
https://www.youtube.com/watch?v=Eo4qqT7xrCA
VIDEO
How To Install an Earphone and Microphone on
Communications Module (Two Wire Post)
https://www.youtube.com/watch?v=IfurxrQ5yY8

APNDX-16 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
One Way Valve Malfunction Troubleshooting
Symptoms Probable Cause Remedy
No sound at either communi-
cations box or helmet. Communications box not on. Activate switch and adjust volume.
Communications incorrectly
hooked up. Switch terminal wires.
Communications not hooked up. Plug into terminals.
Communicator not functional. Replace communicator.
Broken/damaged comm wire Check continuity replace wire or
umbilical.
Battery dead Recharge / use alternate D.C.
source
Communications weak or broken
up.
Terminals in communications
module corroded.
Clean terminals with wire brush.
Terminals should be bright,
shiny metal.
Battery weak. Recharge / use alternate D.C.
source
Loose wire. Clean and repair.
Communications only work
when wire is wiggled back and
forth.
Break in diver’s communication
wire.
Splice wire if damage is minor.
Replace wire if damage is major.
Communications only work
when connector is wiggled back
and forth.
Break in waterproof connector.
If connector is suspect, remove
from line and test line for integ-
rity prior to replacing connector.
Diver speech weak or can’t be
heard.
Microphone in helmet dead or
damaged.
Replace microphone as per man-
ual.
1.3 One Way Valve Malfunction
VIDEO
How To Check The One Way Valve
https://www.youtube.com/watch?v=hxoLiqpbtW8
Symptoms Probable Cause Remedy
One way valve allows back-ow. Foreign matter in valve. Disassemble valve, clean and re-
build. Replace if needed.
One way valve doesn’t ow any
gas. Foreign matter in valve. Disassemble valve, clean and re- build. Replace if needed.

© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002 APNDX-17
Troubleshooting Side Block Malfunction
1.4 Side Block Malfunction
Symptoms Probable Cause Remedy
Steady ow can’t be shut off. Hel-
met free ows through defogger.
Seat assembly damaged or de-
bris under seat.
Clean and/or replace seat assem-
bly. Check - clean side block seal
area.
Side Block damaged by debris Replace side block.
Steady ow valve will not ow
gas.
No air in umbilical. Turn air on to diver’s supply top-
side.
Foreign matter in side block or
one way valve.
Disassemble side block one way
valve and clean.
Steady ow valve knob hard to
turn. Valve stem bent. Replace valve stem.
1.5 Water Leakage Into Helmet
Symptoms Probable Cause Remedy
Water leakage into helmet. Exhaust valve damaged or stuck
open. Seat or replace valve.
Communications module O-ring
extruded or damaged. Replace O-ring.
Communications module not
properly tightened. Tighten module mount nut.
Communications module dam-
aged. Replace.
Binding posts or connector seal
damaged.
Remove posts, clean and reseal
with RTV sealant.
Diaphragm damaged or not seat-
ed properly. Seat or replace diaphragm.
O-ring in neck dam ring dam-
aged or missing. Replace O-ring.
Port retainer screws loose. Tighten screws.
Neck dam torn or damaged. Replace neck dam.
Hair caught between O-ring and
base of helmet. Remove hair from this space.
Head cushion or chin strap
caught under O-ring at neck
dam.
Clear cushion or dam
Regulator assembled improp-
erly. Check for proper assembly.
Damaged gasket Replace gasket

APNDX-18 © MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 211027002
Demand Regulator Malfunction Troubleshooting
1.6 Demand Regulator Malfunction
Symptoms Probable Cause Remedy
Regulator continuously free
ows. Adjustment knob not screwed in. Screw in adjustment knob.
Bent tube damaged causing mis-
alignment of nipple tube.
Check the inlet nipple and soft
seat. Replace as necessary.
Supply pressure too high. Adjust supply pressure lower
than 225 p.s.i. over ambient.
Regulator out of adjustment. Adjust regulator
Regulator continuously free
ows when underwater only.
Neck dam turned down, or too
large for divers neck.
Neck dam must be turned up.
Replace neck dam with proper
size.
Hair caught between O-ring and
base of helmet. Clean hair out.
Neck dam torn. Repair or replace neck dam.
Poor seal in neck dam ring As-
sembly Replace O-rings
Regulator is hard breathing.
Adjustment knob screwed too far
in. Screw adjustment knob out.
Supply pressure too low. Increase supply pressure.
Regulator improperly set up.
Regulator does not supply gas.
Gas supply pressure too low. Increase supply pressure to min-
imum required for depth.
Regulator is out of adjustment. Adjust regulator
No gas in umbilical Turn diver’s gas supply on top-
side.
Blockage in breathing system. Disassemble regulator, clean,
and adjust.
1.7 Emergency Gas Supply Valve
Symptoms Probable Cause Remedy
Bail-out bottle drained without
diver opening EGS valve Stem fails to seat in valve body. Replace EGS valve body.
Debris under seat causing leak-
age. Service valve.
Leaking over-pressure relief
valve on bail-out regulator. Service valve.
Leaking bail-out regulator on
bottle. Service regulator.
Leak in supply line 1st stage Service regulator.
Knob difcult to turn. Stem bent. Replace stem.