North America Only
Instruction Manual
February 2015
7 Series Flame Arrestor
Table of Contents
Introduction .................................................................. 1
Specifications .............................................................. 2
Principle of Operation .................................................. 3
Factors Affecting Flame Arrestor Performance ........... 3
Installation ................................................................... 5
Maintenance ................................................................ 6
Recommended Spare Parts ...................................... 10
Parts Ordering ........................................................... 10
Parts List....................................................................10
7 Series
Figure 1. 7 Series Flame Arrestor
!
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Enardo ame arrestors must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies
Tulsa, LLC (EmersonTM) instructions.
Call a quali ed service person to service
the unit. Installation, operation and
maintenance procedures performed
by unquali ed person may result
in improper adjustment and unsafe
operation. Either condition may result in
equipment damage or personal injury.
Only a quali ed person shall install or
service the 7 Series ame arrestor.
Introduction
Scope of the Manual
This Instruction Manual provides speci cations,
installation and maintenance instructions and parts
ordering information for the 7 Series ame arrestor.
Product Description
7 Series ame arrestors are designed to stop the
propagation of con ned low pressure de agration.
The 7 Series is typically used for end-of-line and near-
end-of-line applications when the system operating
pressure is near atmospheric levels and when there is
minimal probability of a ame stabilizing on the ame
arrestor element for an extended period.
Designed with anged connections, this arrestor
allows removal of the ame cell element for easy
cleaning and replacement without removing the
arrestor body from the pipe connection. Standard
housing construction is aluminum, carbon steel or
D103829X012
www.enardo.com
North America Only
7 Series
Specications
The Specications section lists the specications for the 7 Series. Specication is stamped on the nameplate
attached to the ame arrestor.
Available Construction
See Table 1 and Figure 2
Gas Group
B, C and D
Flange Size and Rating
1 to 36 in. / 25 to 900 mm
CL150 FF and RF
Housing Size
Pipe Length
See Table 4
Housing Material
Aluminum, Carbon steel, 304 Stainless steel,
316 Stainless steel and Hastelloy
Cell Material
Aluminum, 304 Stainless steel,
316 Stainless steel and Hastelloy
4 to 72 in. / 100 to 1800 mm
Temperature Rating of Gaskets
(1)
Fiber Gaskets (standard): 450°F / 232°C
Graphite Gaskets (Optional): Higher temperature
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
7 / - -
Blank = Concentric
E = Eccentric
7 Series Housing
Size
04 = 4 in.
through
72 = 72 in.
Figure 2. 7 Series Flame Arrestor Available Constructions and Model Numbering System
Connection
Size
01 = 1 in.
through
36 = 36 in.
NEC Housing
Gas Group
B
C
D
Material
A = Aluminum
C = Carbon steel
4 = 304 SST
6 = 316 SST
H = Hastelloy
E = Exotic
A = Aluminum
4 = 304 SST
6 = 316 SST
H = Hastelloy
®
E = Exotic
Element
Material
Connection
F = Flat face
R = Raised
®
Type
ange
face
ange
®
®
Options
1 = Drain Port
2 = Pressure Tap
3 = Temperature
Probe Tap
4 = Miscellaneous
5 = Protective
Coating
6 = Special
Feature
FLAME STABILIZED ON
ARRESTOR ELEMENT
PIPING
EXPOSED SIDE
Hastelloy® is a mark owned by Haynes International, Inc.
2
Figure 3. Flame Arrestor Operation
FLAME ARRESTOR ELEMENT ABSORBS
AND QUENCHES FLAME FRONT
PROTECTED SIDE
North America Only
7 Series
Table 1. 7 Series Available Construction
7 SERIES IN-LINE FLAME ARRESTOR CARBON STEEL AND STAINLESS STEEL HOUSINGS CONSTRUCTION
Model
70401 1 25 4 100
70402 2 50 4 100
70602 2 50 6 150
70802 2 50 8 200
70603 3 75 6 150
70803 3 75 8 200
70804 4 100 8 200
71006 6 150 10 250
71206 6 150 12 300
71408 8 200 14 350
71608 8 200 16 400
71810 10 250 18 450
72010 10 250 20 500
72212 12 300 22 550
72412 12 300 24 600
In. mm In. mm
Flange Size Housing Size
7 SERIES IN-LINE FLAME ARRESTOR ALUMINUM HOUSING CONSTRUCTION
Model
70802 2 50 8 200
70803 3 75 8 200
70804 4 100 8 200
71006 6 150 10 250
71206 6 150 12 300
71408 8 200 14 350
71608 8 200 16 400
72010 10 250 20 500
72212 12 300 22 550
72412 12 300 24 600
In. mm In. mm
Flange Size Housing Size
stainless steel. The element is available in stainless
steel. Special material and protective coating are
available on request.
Principle of Operation
Flame arrestor allows gas to pass though it but stops
ame in order to prevent a larger re of explosion.
Arrestor prevents ame by absorbing and dissipating
the heat from ame as it attempts to travel through the
spiral wound crimped ribbon ame cells. These cells
allow maximum ow with maximum protection.
Factors Affecting Flame
Arrestor Performance
Gas Group
!
WARNING
Methanol is classied by the National
Electrical Code (NEC) as a Group-D
vapor. However, our lab tests indicate
that methanol exhibits characteristics
unlike other Group-D vapors under
certain conditions. We therefore
recommend that an arrestor rated
for Group-C vapors be specied for
methanol service.
3
North America Only
7 Series
NATIONAL ELECTRICAL CODE (NEC)
Group B 0.011 0.28 Hydrogen
Group C 0.026 0.65 Ethylene
Group D 0.035 0.90 Propane
GAS GROUP
D 15.4 106
D 15.4 106 5 minutes (all other Group-D)
C 15.4 106 5 minutes
B 15.4 106 2 minutes
Table 2. Maximum Experimental Safe Gap (MESG)
MESG
In. mm
Table 3. 7 Series Flame Arrestor Endurance Burn Time
MAXIMUM INITIAL PRESSURE
psia kPa
30 minutes (Steel and Stainless steel models up to
TEST GAS LIST
ENDURANCE BURN TIME
12 in. and under)
The type of gas in the system determines its gas
grouping and therefore predetermines the type of
arrestor element required. The element must be
designed to accommodate the specic gas group that
could possibly ignite and propagate in the system. The
more explosive gases require the ame cell to absorb
the heat more quickly and efciently. The National
Electrical Code (NEC) groups gases into A, B, C, D
and G.M. categories depending on the Maximum
Experimental Safe Gap (MESG) of the gas.
Maximum Experimental Safe Gap
(MESG)
!
WARNING
Verify that the Flame Arrestor being
installed has the appropriate gas group
rating for your process. This information
is shown on the nameplate attached to
the element housing. Do not remove or
alter this nameplate.
The measurement of the maximum gap between two
equatorial anges on a metal sphere that will prevent
a ame from being transmitted from the sphere to the
surrounding ammable mixture. MESG is dependent
on gas composition. The stoichiometric mixture (the
ideal air/fuel ratio for the most efcient combustion)
is used to determine the minimum MESG for a
given gas. See Table 2 for the MESG per gas group.
Maximum Initial Operating Pressure
This is the pressure of the system at or near static
ow conditions. High pressure deagration can occur
more easily at higher system operating pressures than
at pressures near atmospheric. Elevated pressures
condense the ignitable gas giving the ame more
matter and energy to release thereby boosting the
ame heat intensity. Verify that your system pressure
at or near static ow conditions does not exceed the
maximum pressure shown on the arrestor’s name tag.
Endurance Burn Time
!
WARNING
Unlimited burning should not be allowed
in any ame arrestor, regardless of its
burn time rating. If burning can occur for
a period exceeding 2 minutes starting at
ambient temperature, it is recommended
that a temperature alarm and shutdown
system be installed.
Endurance burn time is the time it takes for a stabilized
ame, at greatest heat saturation conditions, to
heat the arrestor element above the auto-ignition
temperature of the process gas stream resulting in
ame propagation through the arrestor. See Table 3 for
the 7 Series endurance burning time.
4
North America Only
Maximum length of pipe between the
ame arrestor and the ignition source
without bends or other obstructions.
Maximum length of pipe between
the ame arrestor and the ignition
source with a maximum of one 90°
bend. Multiple bends or any additional
obstructions are not recommended.
7 Series
Table 4. 7 Series Pipe Length Rules
GAS GROUP “B” GAS GROUP “C” GAS GROUP “D”
4 ft. / 1.2 m., open ended pipe 6 ft. / 2 m., open ended pipe 20 ft. / 6 m.
Not Recommended With a Bend. 6 ft. / 2 m., open ended pipe 20 ft. / 6 m.
Pipe Lengths
Extended lengths of pipe allow the ame to advance
into more severe states of ame propagation such as
high pressure deagration or detonations. 7 Series
Flame Arrestors should be installed in accordance with
the Table 4.
Bends and/or Flow Obstructions
CAUTION
For maximum safety, avoid bends
and ow obstructions within 10 pipe
diameters on the protected side of the
ame arrestor.
Bends in piping, pipe expansions and/or contractions,
valves, orice plates or ow obstructing devices of
any kind contribute to turbulent ow. Turbulent ow
enhances mixing of the combustible gases, greatly
increasing the combustion intensity. This can result in
increased ame speeds, higher ame temperatures
and higher ame front pressures than would occur in
normal ow conditions.
Installation
!
WARNING
Always make sure that the system is
at atmospheric pressure and there is
no ignitable gas that could ash when
either installing or maintaining the unit.
Connection
Enardo ame arrestors are normally provided with
CL150 raised or at face anges. Other ange
patterns are available upon request. Make sure the
companion anges installed in adjacent piping match
the anges on the ame arrestor.
Standard compressed ber gaskets that withstands
temperatures of 450°F / 232°C are standard. Graphite
gaskets with higher temperature ratings are available
as an option.
Positioning
CAUTION
The ame arrestor is tted with lugs
for lifting the element assembly during
servicing operations. These lugs are
not intended for lifting the entire unit
during installation. Damage to the ame
arrestor may result from improper
lifting. Heavy units should be lifted
using appropriately rated Nylon (PA)
straps rigged on the outside of the
tension studs.
The ame arrestor should be positioned such that the
element is accessible for removal. The tension studs
are supplied with jacking nuts on one half of the bolting
circumference. Install the unit so that the jacking nuts
(on the inside of the studs) are positioned on the
opposite side from the direction that the element
assembly will be removed.
Models that have drain plugs are designed for
horizontal installation and should be installed with the
drain plugs aligned at the bottom of the unit. Models
that have pressure taps are designed to allow pressure
gauges to be installed on both sides of the ame cell
assembly to determine blockage. The pressure taps
should be aligned at the top to allow easy viewing
of the gauges. Units that are equipped with optional
internal cleaning systems should be connected to a
source of cleaning media such as water, steam or
other suitable solvent.
Flow Direction
The Enardo ame arrestor is bi-directional and can be
installed either vertically or horizontally. Consideration
should be given to non-symmetrical assemblies that
5
North America Only
7 Series
include features such as clean-out ports, temperature
monitoring device or other options that might have
a preferred installation direction to suit the needs of
the customer.
Piping Expansions and Reductions
Adjacent to Flame Arrestors
!
WARNING
No instrument, tubing or other device
whatsoever shall circumvent the
ame arrestor in such a manner to
allow a ame path to exist around
the ame element of the arrestor.
When instrumentation is installed in
such a manner that it creates a path
circumventing the ame element of an
arrestor, measures must be taken to
prevent passage of ame through the
instrumentation device and/or system.
Instrumentation must be capable
of withstanding the maximum and
minimum pressures and temperatures to
which the device may be exposed.
An Enardo ame arrestor may be installed in any
vapor control line that is smaller than or equal
to the nominal pipe diameter of the arrestor’s
connection anges.
When it is necessary to increase the diameter of the
piping on the downstream side of the ame arrestor,
a length of pipe at least 120 pipe diameters must
be installed between the ame arrestor and the
expansion. A pipe diameter is considered as the inside
diameter of pipe having a nominal size equal to the
ame arrestor’s connecting anges.
Maintenance
3. Inspect the ame cell with a calibrated pin gauge
to ensure maximum crimp size openings do not
exceed the following values for their respective
gas group:
• Explosion Group D – 0.051 in. / 1.3 mm
• Explosion Group C – 0.038 in. / 0.965 mm
• Explosion Group B – 0.017 in. / 0.432 mm
4. If any damage is noted, or crimp openings
exceed maximum size allowable, replace the
element assembly.
5. Keep the element openings clean to prevent
loss of efciency in absorbing heat. Remove the
element assembly and clean the elements to
prevent the openings from becoming clogged
with particulate matter. Clean the element with a
suitable cleaning media (solvent, soap, water or
steam) then blow dry using compressed air. Be
careful not to damage or dent the cell openings
as this would hamper the effectiveness of the unit.
Do not clean the arrestor elements by rodding to
remove blockages, as this practice will damage
the elements and seriously impair the arrestor’s
performance. If the arrestor element cannot be
cleaned satisfactorily, replace it.
6. For best cleaning results, use a high pressure
sprayer with spray wand (1500 to 3000 psig /
103 to 207 bar) to clean the entire element
surface. Hold the spray nozzle perpendicular
to the surface being cleaned to maximize spray
media penetration into the element. Alternately
spray each side of the element surface until clean.
7. The cleaning interval should be governed by the
amount and type of particulate in the system to
which it is installed and must be determined by
the user. To determine the maintenance interval,
the user should check the element in the rst few
months of operation to nd how quickly particulate
accumulates in the cells.
8. After cleaning, thoroughly inspect the element for
damage. If damaged, replace it.
!
WARNING
Flame cells must be inspected for
damage immediately following a
deagration and/or stabilized burn.
1. Carefully remove the element assembly from
the arrestor and place it on a soft surface such
as plywood.
2. Inspect the ame cell visually for any signs of
corrosion or other damage.
6
Note
Under no circumstance should the
element bank be disassembled from its
shell for cleaning or replacement. The
element section must be replaced as a
complete assembly.
Cleaning of units equipped with this
system may be accomplished in several
ways including periodic cleaning using
manually operated valves, by use of
North America Only
7 Series
an automated cycle timing method
or by having the cleaning operation
initiated whenever the pressure loss
across the arrestor element exceeds a
predetermined value.
Element Assembly, Disassembly and
Reassembly Instructions
!
WARNING
Isolate gas supply and bring system
to atmospheric pressure to prevent
ignitable gas from ashing while
performing maintenance.
1. Loosen all jacking (inside) nuts on tension studs
between conical sections of the ame arrestor.
2. Tighten the inside jacking nuts on the tension
studs forcing the two conical sections apart. When
the two ange faces have separated, remove the
tension studs that do not have inside jacking nuts
so that the element assembly can be removed.
The inside jacking nuts are installed on all tension
studs that facilitate jacking the unit apart. The
inside jacking nuts are not installed on tension
studs that are taken out, for ease of removal.
CAUTION
Element assemblies are heavy and will
require the use of adequate equipment
and manpower to prevent injury.
3. Thoroughly clean the gasket sealing faces being
careful not to damage the sealing surface. For
reassembly, lightly grease one side of a new
gasket and place it in the machined recess of each
interior ange on the two conical sections.
4. Replace the ame element assembly with a new
assembly or properly cleaned and inspected
existing unit.
5. Loosen the jacking nuts on the tension rods until
the ame cell assembly seats onto the gaskets.
6. Replace all tensioning studs and hand tighten the
outer nuts. Check to be sure that all the jacking
nuts are completely loose and not making contact
with the ange face.
Torquing Instruction
CAUTION
Excessive or uneven torquing can
cause permanent damage to gaskets
and housing.
Tools/Supplies Required
• Torque wrench appropriate for the specied torque
• Socket wrenches of the proper size to t the hex
nuts being tightened
• Molydisulde based lubricating paste,
Molykote® G-n or equivalent
• Brush suitable for applying lubricant to the studs
• Wiping rags necessary for the clean up of
excessive lubricant
Procedure
1. Use studs and nuts that are free of visible
contamination and corrosion.
2. Apply lubricant to the threads of the stud
protruding outboard of the interior anges and
to the face of the hex nuts which will contact
the ange.
3. Assemble the nuts to the studs such that the
amount of thread extending outboard beyond the
nut is approximately equal on both ends.
4. Tighten the nuts to the torque values shown
in Table 5 following the designated sequence,
repeating the sequence as shown. Flange pattern
tightening sequences are shown in Figure 4.
Bolt Lubrication
Lubrication will affect required torque of clean
fasteners in good condition more than any other factor.
In fact, 90% of applied torque goes to overcome
friction while only 10% actually stretches the bolt.
Table 5 assumes that only machine oil is used as a
lubricant. Table 6 shows a list of several common
lubricants and their effect on torque required to stretch
bolts to 50% of their yield strength. Most are available
from local bearing distributors.
Molykote® G-n is a mark owned by Dow Corning Corporation.
7
North America Only
7 Series
4
2
8
4
PATTERN 1
1
10
6
2
PATTERN 4
1
1
3
6
4
2
3
5
8
1
4
6
2
5
3
7
PATTERN 2 PATTERN 3
1
16
1
5
3
7
9
12
58
4
10
6
2 11
9
3
7
PATTERN 5
12
8
4
14
10
6
2 15
PATTERN 6
5
9
13
3
7
11
28 1
24
24
20
1
16
12
8
4
18
14
10
6
2 19
5
9
13
17
3
7
11
15
16
12
8
4
22
18
14
10
1
20
6
5
9
13
17
21
3
7
11
15
19
23
2
4
26
20
16
12
8
22
18
14
10
6
2
5
9
13
17
21
25
3
7
11
15
19
23
27
PATTERN 7 PATTERN 8 PATTERN 8
Figure 4. Flange Pattern Tightening Sequence
8
North America Only
7 Series
Table 5. Tightening Steps and Torque Values
7 SERIES FLAME ARRESTORS WITH ALUMINUM
END SECTIONS ONLY
Model Pattern
(2)
TIGHTENING STEPS AND TORQUE (LBF-FT / N•m)
Step 1 Step 2
(1)(2)
70802-A, 70803-A, 70804-A 1 Snug 25 / 34
71006-A, 71206-A, 71408-A 2 Snug 25 / 34
71608-A 3 Snug 25 / 34
72010-A 3 Snug 50 / 68
72212-A, 72412-A, 72414-A,
72614-A, 72616-A
5 Snug 50 / 68
73016-A 7 Snug 50 / 68
73216-A 8 Snug 50 / 68
7 SERIES FLAME ARRESTORS WITH STEEL OR
STAINLESS STEEL END SECTIONS ONLY
Model Pattern
70401, 70401.5, 70602, 70603,
70604, 70802, 70803, 70804
(2)
Step 1 Step 2 Step 3 Step 4 Step 5
1 Snug 20 / 27 50 / 68
TIGHTENING STEPS AND TORQUE (LBF-FT / N•m)
71006, 71206 2 Snug 20 / 27 50 / 68
71408 2 Snug 25 / 34 60 / 81
71608 3 Snug 25 / 34 50 / 68 80 / 108
71810 3 Snug 25 / 34 50 / 68 90 / 122
72010 3 Snug 25 / 34 50 / 68 75 / 102 100 / 136
72212 4 Snug 25 / 34 50 / 68 85 / 115
72412 4 Snug 35 / 47 70 / 95 100 / 136 130 / 176
72614, 72616 4 Snug 35 / 47 70 / 95 100 / 136 140 / 190
72814 5 Snug 35 / 47 70 / 95 100 / 136 125 / 169
73016 5 Snug 35 / 47 70 / 95 100 / 136 130 / 176
73216 6 Snug 35 / 47 70 / 95 105 / 142
73420 6 Snug 35 / 47 70 / 95 115 / 156
7 SERIES FLAME ARRESTORS WITH STEEL OR
STAINLESS STEEL END SECTIONS ONLY
Model Pattern
(2)
Step 1 Step 2 Step 3 Step 4 Step 5
TIGHTENING STEPS AND TORQUE (LBF-FT / N•m)
73620 6 Snug 35 / 47 70 / 95 100 / 136 120 / 163
74020, 74024, 74824 7 Snug 35 / 47 70 / 95 130 / 176
77036 8 Snug 35 / 47 70 / 95 130 / 176 200 / 271
1. Use machine oil as lubricant. See Bolt Lubrication section (Table 6) and torque correction factors for other lubricants.
2. See Figure 4.
Table 6. Torque Correction Factors for Common Lubricants
DESCRIPTION COEFFICIENT OF FRICTION MULTIPLY TORQUE VALUE IN TABLE 5 BY
Machine Oil f = 0.15 1.00
API SA2 Grease f = 0.12 0.80
®
Never-Seez
Never-Seez
Molykote
Molykote® G-n is a mark owned by Dow Corning Corporation.
Never-Seez® is a mark owned by Bostik, Inc.
(Ni base) f = 0.11 0.73
®
(Cu base) f = 0.10 0.67
®
G-n Paste f = 0.06 0.40
9
North America Only
7 Series
Recommended Spare Parts
For installations that require frequent maintenance and
minimum downtime, it is recommended that the user
purchase a spare element assembly and several spare
element gaskets. The spare element assembly can
be installed immediately and the dirty assembly can
then be cleaned and be stored as a spare for the next
maintenance interval.
Note
Element gaskets should be replaced
each time the cell assembly is loosened
and removed to insure a gas tight seal.
Parts List
Table 7. Part Numbers for Replacement Element Assembly Gaskets (for Cast Aluminum End Sections)
MODEL
70802-A, 70803-A and 70804-A 7008102 7049202
71004-A 7008135 7049235
71206-A 7008136 7049236
71408-A 7008124 7049224
71608-A 7008107 7049207
1. Two (2) required per assembly.
Standard Gasket
(Compressed Fiber)
Parts Ordering
When corresponding with your local Sales Ofce about
this equipment, always reference the equipment serial
number stamped on the nameplate.
When ordering replacement parts, specify the
complete 7-character part number of each required
part as found in the following parts list.
(1)
PART NUMBER
High Temperature Gasket
(Graphite Coated 316 Stainless Steel)
Table 8. Part Numbers for Replacement Element Assembly Gaskets (for All Fabricated End Sections)
MODEL
70400 7008153 7049253
70600 7008134 7049234
70800 7008123 7049223
71000 7008135 7049235
71200 7008136 7049236
71400 7008124 7049224
71600 7008107 7049207
71800 7008108 7049208
72000 7008109 7049209
72200 7008110 7049210
72400 7008111 7049211
72600 7008112 7049212
72800 7008113 7049213
73000 7008114 7049214
73200 7008115 7049215
73400 7008116 7049216
73600 7008117 7049217
73800 7008152 7049252
74000 7008118 7049218
74800 7008133 7049233
77000 7083300 - - - - - -
1. Two (2) required per assembly.
Standard Gasket (Compressed Fiber)
(1)
PART NUMBER
High Temperature Gasket
(Graphite Coated 316 Stainless Steel)
10
North America Only
7 Series
Table 9. Replacement Element Assemblies Part Numbers (Group D Gas)
HOUSING
MATERIAL
FLAME
CELL
MATERIAL
MODEL PART NUMBER
70400 7011741 7011742 7002246 7002261 7002275 7048509 7002201
70600 7011734 7011735 7048514 7048515 7002279 7048516 7002266
70800 7011704 7011712 7002253 7002203 7002217 7002211 7002202
71000 7011705 7011713 7002254 7002204 7002291 7002214 7002292
71200 7011706 7011702 7002256 7002239 7002233 7002283 7002293
71400 7011707 7011714 7002263 7002228 7002223 7002262 7002268
71600 7011708 7011715 7002248 7002247 7002234 7002280 7002297
71800 7011736 7011737 7002252 7002251 7002289 7002250 7048518
72000 7011709 7011716 7002213 7002249 7048519 7002218 7002296
72200 7011710 7011717 7002240 7002207 7048520 7048510 7048521
72400 7011711 7011718 7002258 7002265 7002232 7002264 7002276
72600 7011703 7011738 7048522 7048523 7048524 7048525 7048526
72800 7011726 7011739 7048505 7048527 7048528 7002281 7048529
73000 7011721 7011740 7002243 7002270 7048530 7048531 7048532
73200 7011732 7011733 7002230 7048533 7048534 7048535 7048536
73400 7011743 7011744 7048537 7002226 7048538 7048539 7048540
73600 7011745 7011746 7048541 7002241 7048542 7048543 7002274
73800 7011747 7011748 7048544 7048545 7048546 7048547 7048548
74000 7011749 7011750 7048549 7002273 7048550 7048551 7002209
74800 7011751 7011752 7048552 7002288 7048553 7048554 7048555
Aluminum Aluminum Carbon Steel Carbon Steel
Aluminum
304 Stainless
Steel
Aluminum
304 Stainless
Steel
304 Stainless
Steel
304 Stainless
Steel
Carbon Steel
316 Stainless
Steel
316 Stainless
Steel
316 Stainless
Steel
Table 10. Replacement Element Assemblies Part Numbers (Group C Gas)
HOUSING
MATERIAL
FLAME CELL
MATERIAL
MODEL PART NUMBER
70400 7011753 7011754 7048556 7048557 7048502 7048558 7048559
70600 7011755 7011756 7048560 7048561 7048562 7048563 7002231
70800 7011729 7011731 7048507 7002255 7002295 7002206 7048564
71000 7011757 7011758 7048506 7002259 7048501 7048565 7048566
71200 7011759 7011760 7048567 7002260 7048569 7048570 7048571
71400 7011761 7011762 7048572 7048573 7048574 7048575 7002245
71600 7011763 7011764 7048576 7048577 7048578 7048504 7048579
71800 7011765 7011766 7048580 7048581 7048582 7048583 7048584
72000 7011767 7011768 7048585 7002299 7048586 7048587 7048588
72200 7011769 7011770 7048589 7048590 7048591 7048592 7048593
72400 7011771 7011772 7048594 7048595 7048596 7048597 7002244
Aluminum Aluminum Carbon Steel Carbon Steel
Aluminum
304 Stainless
Steel
Aluminum
304 Stainless
Steel
304 Stainless
Steel
304 Stainless
Steel
Carbon Steel
316 Stainless
Steel
316 Stainless
316 Stainless
Steel
Steel
11
North America Only
7 Series
Table 11. Replacement Element Assemblies Part Numbers (Group B Gas)
HOUSING
MATERIAL
FLAME CELL
MATERIAL
MODEL PART NUMBER
70400 7011773 7011774 7048598 7048513 7002212 7048512 7002210
70600 7011775 7011776 7048599 7056501 7056502 7056503 7056504
70800 7011725 7011777 7056505 7002216 7002286 7048511 7002215
71000 7011778 7011779 7056506 7002205 7056507 7002290 7056509
71200 7011780 7011781 7056510 7002257 7002282 7056511 7002298
71400 7011782 7011783 7056512 7048508 7056513 7056514 7056515
71600 7011784 7011785 7056508 7056516 7056517 7056518 7056519
71800 7011786 7011787 7056520 7056521 7056522 7056523 7056524
72000 7011727 7011788 7056525 7056526 7056527 7056528 7056529
72200 7011789 7011790 7056530 7056531 7056532 7056533 7056534
72400 7011791 7011792 7056535 7056536 7056537 7056538 7056539
Aluminum Aluminum Carbon Steel Carbon Steel
Aluminum
304 Stainless
Steel
Aluminum
304 Stainless
Steel
304 Stainless
Steel
304 Stainless
Steel
Carbon Steel
316 Stainless
Steel
316 Stainless
Steel
316 Stainless
Steel
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