Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309-US-0306without notice. Copyright © 2003 by Tyco International Ltd.

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IntroductionVarec Flame Arresters have been theindustry standard for over 60 years. Theyare used worldwide throughout thepetroleum, petrochemical, chemical, pulpand paper, food and beverage and otherindustries where flame propagation is apotential problem. Varec’s success in thisarea is based on its high standards forproduct design and manufacture.

The 5400A Series utilizes two principles tostop the propagation of flame from externalsources. The first method is dissipation ofheat. The temperature of the flame front isreduced below the flash point of the vaporby the absorption of heat through thesurface of the bank assembly.

The second method concerns thequenching diameter of Class “D” vapors.The space between the bank assemblycrimps is smaller than the diameterrequired to pass a flame of a Class “D”gas.

These units are generally used inconjunction with low flash point liquids andflammable gases or vapors. They shouldbe installed vertically on tank vent systemsor in piping headers up to a maximum of10 pipe diameters upstream of the ignitionsource, when used in accordance with FMApproval, or 15 feet when used inaccordance with UL Approval.

For distances or gas classifications outsidethese limits, the detonation arrester shouldbe used. Proper application of flamearresters is crucial for plant safety. Varecapplications engineers or factory trainedrepresentatives can assist you with yourspecific applications.

FeaturesThe net free area through all Varec FlameArrester banks is three to four times theunit pipe size. This design reduces surfacefriction, therefore, optimizing flow capacityand minimizing pressure drop. The largesurface area of the bank also improvesheat dissipation.

Varec 5400A Series Flame Arresters aredesigned with a spiral wound and crimpedbank element.

Maintenance of the bank assembly issimple:

• The tie rod bolts are removed and theremaining jackscrews expanded. Thisextends the end housings allowing thebank assembly to be easily removed.

• A handle is provided for easy handling.

• The bank element is quickly inspected orcleaned and replaced between the endhousings.

Technical data• Three to four times net free area through

bank

• UL and FM approved

• Rugged construction for extended life

• Unitized design with jackscrews for easyinspection and maintenance

• Broad range of materials available

The 5400A Series, Group “D”, end-of-line flame arresteris designed to prevent the propagation of flames into astorage vessel.

Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309without notice. Copyright © 2003 by Tyco International Ltd. 2

Dimensions, inches and pounds [millimeters and kilograms]

R

Specifications

Size Code 2 3 4 6 8 0 1

Nominal 2 3 4 6 8 10 12Pipe Size [50] [80] [100] [150] [200] [250] [300]

L Length

H Height

W Width

Shipping Weight

NotesFlange drilling per ANSI Class 125 flat faceflange (aluminum) or per ANSI Class 150 raisedface flange (steel and 316 SS).

Installation, mounting arrangement anddimensions are preliminary information not to beused for construction. Certified drawings areavailable upon request.

Sizes

2”, 3”, 4”, 6”, 8”, 10” and 12”

Connections

Aluminum drilled to ANSI Class 125 dimensions,flat face flange

Steel and Stainless Steel drilled to ANSI Class 150dimensions, raised face flange

Pressure Rating

Leak proof to 10 psi [69.0 kPa]

Pressure Drop

Should not exceed 1 psi [6.9 kPa]

Location1

Within 15 feet [4.6m] upstream of flame sourcewhen used in accordance with UL Listing, or 10pipe diameters when used in accordance with FMApproval

Configuration

Net Free AreaThree to four times the corresponding sizestandard pipe

Bank Assembly Spiral wound and crimped element with corehousing and integral handle

Housing Materials

Heavy wall, 356 HT low copper aluminum, standard

Steel or 316 stainless steel, optional

Bank Assembly Material

Low copper aluminum core housing and element,standard

Low copper aluminum core housing with 316stainless steel element, optionalAll 316 stainless steel core housing and element,optional

Approvals

UL (Underwriters Laboratories) listed in all aluminum construction in 2”, 3”, 4”1

FM (Factory Mutual) All sizes, all materials1

Note1. For use on hydrocarbon storage tanks,

installed NOT MORE THAN 15 FEET fromthe open end of the vent pipe when used inaccordance with UL Listing or 10 pipediameters when used in accordance with FMApproval. These test conditions may notrepresent the actual service conditions ofpiping system design. It is recommended thatthe arrester be independently tested underactual service conditions before installation.

WRef

W Ref2”, 3” and 4”

Size

H Ref

L Ref

141/2 161/2 205/16 213/4 253/4 301/2 349/16[368] [419] [516] [552] [654] [775] [878]

91/2 111/2 131/4 173/4 22 23 30[241] [292] [337] [451] [559] [584] [762]95/16 115/16 137/16 19 23 25 31[237] [287] [341] [482] [584] [635] [787]

25 35 45 90 140 210 325[11] [16] [20] [41] [64] [95] [148]

Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309without notice. Copyright © 2003 by Tyco International Ltd. 3

Thousand cubic feet/hour at 60° F and 14.7 psiaAir flow (SCFH)

Vac

uum

Oun

ces

Per

Squ

are

Inch

Pre

ssur

eO

unce

sP

erS

quar

eIn

chFlow Curves

2” 4” 6” 8” 12”10”3”

Inch

es o

f Wat

erIn

ches

of W

ater

40

30

25

20

15

10987

6

5

4

3

2

1.9.8.7.8.91

2

3

4

5

6

789

10

15

20

25

30

40

20

15

1098

7

6

5

4

3

2

1

.5

.4

.5

1

2

3

4

5

6

7

89

10

15

20

1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500600

700800

9001000

1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500600

700800

9001000

5400A Series Flame Arrester

2” 4” 6” 8” 12”10”3”

Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309without notice. Copyright © 2003 by Tyco International Ltd. 4

2010B Series Relief Valve with 5400A Series Flame ArresterSet at 0.865 Inches of Water Pressure and Vacuum

Thousand cubic feet/hour at 60° F and 14.7 psiaAir flow (SCFH)

Vac

uum

Oun

ces

Per

Squ

are

Inch

Pre

ssur

eO

unce

sP

erS

quar

eIn

ch

Inch

es o

f Wat

erIn

ches

of W

ater

40

30

25

20

15

10987

6

5

4

3

2

1.9.8.7.8.91

2

3

4

5

6

789

10

15

20

25

30

40

20

15

1098

7

6

5

4

3

2

1

.5

.4

.5

1

2

3

4

5

6

7

89

10

15

20

1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500600

700800

9001000

1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500600

700800

9001000

Flow Curves

2” 4” 6” 8” 12”10”3”

2” 4” 6” 8” 12”10”3”

Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309without notice. Copyright © 2003 by Tyco International Ltd. 5

Model Description5400A Flame Arrester (Vertical Installation Only)

Code Size (Select one)2 2”3 3”4 4”6 6”8 8”0 10”1 12”

Code Housing/Core/ Element Materials1 Aluminum/Aluminum/Aluminum2 Aluminum/316 SS/316 SS3 Carbon Steel/316 SS/316 SS5 Ductile Iron/316 SS/316 SS6 316 SS/316 SS/316 SS

5400A 2 1 (Example)(Example: 2” Flame Arrester with aluminum housing, aluminum core housing and element)

Ordering Information

Varec 5400A Series Flame Arrester

Tyco reserves the right to change product design and specifications VRCMC-0309without notice. Copyright © 2003 by Tyco International Ltd. 6

The data presented in this bulletin is for general information only. Manufacturer is not responsible for acceptability of these products in relation to system requirements. Patents and PatentsPending in U.S. and foreign countries. All rights reserved. Printed in U.S.A. Tyco reserves the right to change product design and specifications without notice. © Copyright 2003.

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