Flash Back Arrestors · RF53N, -DN, -NU, -U, -NSK – BRASS FBA CONTROLLING PRESSURE & VACUUM Product Information Techical Data C5 subject to change SAFETY DEVICES Ø 24 mm (0.95

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Flash Back Arrestors& Safety Devices

www.ftipv.com

RF53N, -DN, -NU, -U, -NSK – BRASS FBA

CONTROLLINGPRESSURE & VACUUM

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SAFETY DEVICES

Ø 24 mm(0.95 inch)

ca. 8

2 m

m(3

.2 in

ch)

RF53N

Ø 24 mm(0.95 inch)

ca. 1

01 m

m(4

.0 in

ch)

RF53DN

ca. 1

10 m

m(4

.3 in

ch)

RF53NSK

Ø 24 mm(0.95 inch)

ca. 8

2 m

m(3

.2 in

ch)

RF53NU

Ø 24 mm(0.95 inch)

ca. 8

2 m

m(3

.2 in

ch)

RF53U

The best Flashback Arrestors in the world• a large surface area flame arrestor FA of stainless steel

construction extinguishes any dangerous flashback entering the device in any direction

• a temperature sensitive cut-off valve TV extinguishes sustained flashbacks long before the internal temperatureof the arrestors reaches a dangerous level

• a spring loaded non-return valve NV prevents slow or sudden reverse gas flow forming explosive mixtures in thegas supply

• a filter at the gas inlet protects the arrestor against dirtcontamination, extending the service life

• a pressure relief valve vents excessive pressure and sootto the atmosphere protecting the hose from bursting andthe flame arrestor from clogging up thus maintaining theflow rate (only RF53DN)

Operation / Usage• RF Flashback Arrestors are used to protect gas cylinders

and pipeline outlet points (hoses and any equipment)against dangerous reverse gas flow and flashbacks.

• for pipeline outlets and single cylinders: Models RF53N, RF53DNand RF53NSK

• for torches of burners with high flow: Model RF53NU

• for cutting machines with high flow: Model RF53U

• WITT Flashback Arrestors may be mounted in any position /orientation

• only one piece of equipment may be connected to a singleFlashback Arrestor

• the maximum ambient / working temperature is 70 °C

Maintenance• annual testing of the non-return valve, body leak tightness

and flow capacity is recommended

• WITT is happy to supply special test equipment

• Flashback Arrestors are only to be serviced by the manu-facturer. The dirt filter may be replaced by competent staff

ApprovalsCompany certified according to ISO 9001:2000 and ISO 14001

WITT RF Flashback Arrestors for reliable protection against dangerous reverse gas flow and flashbacks according to EN 730 / ISO 5175-1 Certified and under surveillance

Every Arrestor 100% tested.

Models

Safety devices RF53N RF53DN RF53NSK RF53NU RF53U

Flame arrestor FA X X X X X

Non-return valve NV X X X X X

Temperature sensitive cut-off valve TV

X X X X

191191842062191]g[ thgieW

Approval DVGW NG-4390BL0422

40/300/ABZ/MABMAB lavorppA

RC – sgnir-O ;RBN – laes evlaV ;leets sselniatS – rotserra emalF ;ssarB – gnisuoHlairetaM

Ø 24 mm(0.95 inch)

f.t.i. ltd t: 01892 669939 f: 01892 669594 e: [email protected] w: www.ftipv.com

RF53N, -DN, -NU, -U, -NSK – BRASS FBA


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SAFETY DEVICES

RF53NSK

Conversion factors:Acetylene x 1,04Butane x 0,68Natural gas x 1,25Methane x 1,33Propane x 0,80Oxygen x 0,95Town gas x 1,54Hydrogen x 3,75

Conversion factors:Acetylene x 1,04Butane x 0,68Natural gas x 1,25Methane x 1,33Propane x 0,80Oxygen x 0,95Town gas x 1,54Hydrogen x 3,75

Flow diagram for air (20 °C – 68 °F)

Inlet pressure: Pv (bar) Opening pressure: 30 mbar

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013

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14.

7 p

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°C

– 3

2 °F

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RF53NRF53NURF53URF53DN Flow 10% less

Flow diagram for air (20 °C – 68 °F)

Inlet pressure: Pv (bar) Opening pressure: 30 mbar

Sta

ndar

d v

olim

e flo

w [N

m3 /

h](1

013

mb

ar –

14.

7 p

si, 0

°C

– 3

2 °F

)

Models

Safety devices RF53N RF53DN RF53NSK RF53NU RF53U

Gases max. working pressure [bar]

Acetylene (A) 1.5 1.5 1.5 1.5

Town gas (C) 5.0 5.0 5.0 5.0 5.0

Natural gas (M) 5.0 5.0 5.0 5.0 5.0

0.50.50.50.30.5)P( GPL

Hydrogen (H) 3.0 5.0 3.0 3.0

Connections Order-No.

G 3/8 LH 145.012 145.041 145SK.002 145.034 145.003

530.541340.541610.541HL 2/1 G

G 1/4 LH 145.009

Models

Safety dev ices RF53N RF53 DN RF53NSK RF53NU RF53U


Oxygen (O) 30.0 10.0 20.00 30.0 30.0

Compressed air (D) 30.0 10.0 20.00 30.0 30.0


G 1/4 RH 145.021 145.048 145SK.008* 145.036 145.004

G 3/8 RH 145.022 145.049 145SK.001* 145.037 145.005

600.541830.541050.541320.541HR 2/1 G

*RF53NSK with coupling body according to EN 561 – for coupling probes SK100


RF85-10, RF85-30 – BRASS FBA


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FLASHBACK ARRESTORS RF 53 N / 85-10 / 85-30

Ø 24 mm

ca. 8

2 m

m

Ø 84 mm

ca. 1

88 m

m

TestsEvery WITT Arrestor is tested individually for body leaks, non-return valvefunktion and is subjected to flashback testing at the maximum rated operating pressure in accordance with ISO standards or those of thecountry of sale.

MaintenanceNo maintenance is required. Nevertheless it is recommended that at annual intervals the units are tested with clean dry air or nitrogen for body leakage and against reverse flow. Test specifications and test equipment available on request.

InstallationThe WITT Automatic Flashback Arrestor may be installed at regulator orpipeline outlets. For pipeline use a shut-off valve should be fitted immediately upstream of the arrestor. If there is a danger from water vapour being carried with the gas, then a seperator should be installedupstream. Not more than one process unit may be connected to oneflashback arrestor. It may be mounted horizontally, vertically or any other position. The maximum working temperature is 70° C.

RepairsDetective units as well as units with temperature activated cut-off valve closed should only be serviced by the manufacture or his authorised local representative as it requires full testing including flashback testing after reassembly. The change of the dirt filter is notpart of this requirement and can easily be carried out.

Ø 34 mm

ca. 1

06 m

m

Description:

The WITT Automatic Flashback Arrestors RF 53 N,85-10 and 85-30 incorporate:

• Large surface mesh filter to remove dirt particles from the gas to improve service life ofthe arrestor.

• Spring loaded non-return valve to prevent slowor sudden backfeeding. It is protected fromflashbacks by the downstream arrestor element.

• Large surface area flame arrestor of sintered stainless steel to extinguish any flashback entering the device in any direction. The cylindrical shape gives high flow capacity.

• Temperature activated valve to cut-off the gassupply before the internal temperature reaches a dangerous level. The sealing element is shrouded from flashbacks and the valve closesin the same direction as the gas flow ensuringthat it cannot be re-opened by the gas inletpressure.

WITT Automatic Flashback Arrestors RF 53 N, 85-10 and 85-30 conform to EN 730-1, ISO 5175and other national standards.

RF 53 N

85-10

85-30

Fuel weight housing- seal- RF 53 N 85-10 85-30max. work press Connections approval [g] material material Part No. Part No. Part No.[bar]

5840 MAB5,1 enelytecANatural Gas 5,0

G 3/8 LHNG-4390BL0422 191

145.012 143.002LPGG 1/2 LH

(RF 53 N) (RF 53 N)145.016 143.008RF 53 N RF 53 N, 85-10 5,0

900.541HL 4/1 G85-30 3,5G 3/4 LH 147.00185-10 HydrogenG 1 LH

BAM 0385 434 Brass NBR / CR147.003RF 53 N 3,0 NG-4390BL0421 (85-10)

85-30 )01-58(0,5 01-5885-30 4,0

310.341120.541HR 4/1 GG 3/8 RH

4.580

145.022 143.016Air / OxygenG 1/2 RH

BAM 0890 (85-30)

145.023 143.019G 3/4 RH

NG-4390AS0749

147.00530,0G 1 RH

(85-30)

147.006


RF85-10, RF85-30 – BRASS FBA


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FLASHBACK ARRESTORS RF 53 N / 85-10 / 85-30

RF 53 N

85-10

Convesion factors:Acetylene x 1,04Butane x 0,68Natural Gas x 1,25Methane x 1,33Propane x 0,80Oxygen x 0,95Town Gas x 1,54Hydrogen x 3,75

85-30

Pressure drop diagram for Air (20 °C)

Inlet pressure: Pv [bar]/Opening pressure 20 mbar

No

rmal

vo

lum

e flo

w [N

m3 /

h](1

013

mb

ar -

14.

7 p

si, 0

°C

- 3

2°F

)N

orm

al v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

- 1

4.7

psi

, 0°

C -

32°

F)

No

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m3 /

h](1

013

mb

ar -

14.

7 p

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°C

- 3

2°F

)

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SUPER 55, SUPER 85 – RESETTABLE FBA


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SAFETY DEVICES

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Benefits

• extinguish dangerous flashbacks with sintered stainless steel elements FA

• immediately cut off the gas supply, and therefore prevent dangerous further work after any flashback or gas backflow via pressure sensitive cut-off valve PV

• extinguish sustained backfire – via temperature sensitive cut-off valve TV

• avoid the formation of explosive mixtures in the gassupply – via non-return valves NV

• indicate flashbacks and gas backflow optically – via red alarm mark

• allow simple resumption of work after the cause ofhazard has been removed – via resetting the sleeve

• offer long service life due to protection against dirt – via filter at gas inlet

Operation / Usage

• the Flashback Arrestors are used against gas backflow and flashback at pipeline outlets and singlecylinder equipment.Super 85 for high flow

• the Flashback Arrestors can be installed independentof the orientation but according to gas flow

• each blowpipe should have its own Flashback Arrestor

• maximum ambient / working temperature is 70 °C / 158 °F

Maintenance

• annual testing of the non-return valve, leak tightnessand flow capacity is recommended

• WITT is happy to supply testing equipment

• Flashback Arrestors are only be serviced by the manufacturer. The dirt filter may be replaced by competent staff

Approvals

Company certified according to ISO 9001:2000 and ISO 14001

From the product range „Super“, one of the best flashback arrestors in the world. For reliable protection against dangerous gas backflow and flashback according to EN 730 / ISO 5175-1. Certified and under surveillance


58 REPUS55 REPUS

red alarmmark

STOPOPERATE

Ø 27.5 mm(1.08 inch)

app

rox.

119

mm

(4.6

8 in

ch)

red alarmmark

STOPOPERATE

Ø 33.5 mm(1.32 inch)

app

rox.

150

mm

(5.9

1 in

ch)


SUPER 55, SUPER 85 – RESETTABLE FBA


Tech

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subj

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o ch

ange

SAFETY DEVICES

SUPER 55

SUPER 85

Conversion factors:Acetylene x 1.04Butane x 0.68Natural Gas x 1.25Methane x 1.33Propane x 0.80Oxygen x 0.95Town gas x 1.54Hydrogen x 3.75

Conversion factors:Acetylene x 1.04Butane x 0.68Natural Gas x 1.25Methane x 1.33Propane x 0.80Oxygen x 0.95Town gas x 1.54Hydrogen x 3.75

0.05

0 0

0.1 0.2 0.3 0.4 0.6 1.0 1.5 2 3 4 6 10 15 20 25 30

P=Pv

P=0.3 bar

P=0.6 bar

P=Pv

P=0.6 bar

P=0.3 bar1

2

3

4

5

6

7

8

9

10

10

40

50

60

70

80

90

100

110

120

130

150

Flow diagram for air (20 °C / 68 °F)


0.05

0 0

0.1 0.2 0.3 0.4 0.6 1.0 1.5 2 3 4 6 10 15 20 25 30

P=Pv

P=0.3 bar

P=0.6 bar

P=Pv

P=0.6 bar

P=0.3 bar20

40

60

80

100

120

140

160

180

200

220

240

260

2

4

6

8

10

12

14

16

18

20

Inlet pressure: Pv [bar] Opening pressure: 30 mbar

Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)

Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)


Super 55

Super 85

Gas typemax. working pressure

[bar]

Acetylene (A) 1.5

Hydrogen (H) 3.0

LPG (P)

Town Gas (C) 5.0

Natural Gas, Methane (M)

Oxygen (O)

Non-flammable gases (D) 30.0

Acetylene (A) 1.5Hydrogen (H) 4.0Propane (P)Town Gas (C) Natural Gas, Methane (M) 5.0Ethylene (E)Oxygen (O)Non-flammable gases (D) 30.0

Approval

BAM/ZBA/003/04

BAM/ZBA/003/04

Housingmaterial

Brass

Brass

Sealmaterial

Elastomer

Elastomer

ConnectionEN 560[inch]

G 3/8 LH

G 1/4 RH

G 3/8 RH

G 3/8 LH

G 1/4 RH

G 3/8 RH

146.001

146.003

146.002

148.002

148.013

148.016

Order-No.


RF53N-ES, F53N-ES – STAINLESS STEEL FBA


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SAFETY DEVICES

approx. 68 mm(2.7 inch)

Ø 2

5 m

m(1

inch

)

F53N-ES / F53N/H-ESRF53N-ES / RF53N/H-ES

The best Flashback Arrestors in the world

• a large surface area flame arrestor FA of stainless steelconstruction extinguishes any dangerous flashback entering the device in any direction

• a temperature sensitive cut-off valve TV extinguishes sustained flashbacks long before the internal temperature of the arrestors reaches a dangerous level


• a filter at the gas inlet protects the arrestor against dirt contamination, extending the service life (RF53N-ES)

Operation / Usage• Flashback Arrestors are used to protect gas cylinders and

pipeline outlet points (hoses and any equipment) againstdangerous reverse gas flow (RF53N-ES) and flashbacks

• without non-return valve (F53N-ES) for lower working pressures i.e. before and after analysers

• ideal for use with corrosive gases in the chemical industry,process technology or in the laboratory area

• WITT Flashback Arrestors may be mounted in any position / orientation

• the maximum ambient / working temperature is 70 °C / 158 °F

Maintenance• annual testing of the non-return valve, body leak tightness

and flow capacity is recommended


• Flashback Arrestors are only to be serviced by the manu-facturer. The dirt filter may be replaced by competent staff

Approvals


WITT Flashback Arrestors for reliable protection against dangerous reverse gas flow and flashbacks according to EN 730 / ISO 5175-1 Certified and under surveillance


Other connections available on request

Safety devices F53N F53N/H

X

–

X

181

BAM/ZBA/003/04

Housing – Stainless steel;Flame arrestor – Stainless steel;

Seal – Elastomer

max. working pressure [bar]

–

5.0

5.0

5.0

3.0

–

145.059

–


9.0

145.106

–

Order-No.

–

–

12.0

8.0

9.0

1.5

5.0

5.0

5.0

3.0

–

145.001

145.031

30.0

30.0

145.116

145.024

–

–

–

–

–

–

12.0

8.0

9.0

9.0

145.107

145.121

RF53N RF53N/H

X

X

X

195

Model …-ES

Flame arrestor FA

Non-return valve NV

Temperature sensitvecut-off valve TV

Weight [g]

Approval BAM

Material

Gases

Acetylene (A)

Town gas (C)

Natural gas (M)

LPG (P)

Hydrogen (H)

Ethylene (E)

Connections

1/4” NPT F

3/8” NPT F

Gases

Oxygen (O)

Compressed air (D)

Connections

1/4” NPT F

3/8” NPT F

Order-No.

30.0

30.0

145.157

–

–

–

–

–


RF53N-ES, F53N-ES – STAINLESS STEEL FBA


Tech

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SAFETY DEVICES

RF53N/H-ES145.107145.121

Conversion factors:Acetylene x 1.04Butane x 0.68Natural gas x 1.25Methane x 1.33Propane x 0.80Oxygen x 0.95Town gas x 1.54Hydrogen x 3.75



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RF53N-ES145.001145.031145.116145.024



0.05

0

0.1 0.2 0.3 0.4 0.6 1.0

1

2

3

4

5

6

7

8

9 P=Pv

P=0.3 bar

P=0.6 bar


Inlet pressure: Pv [bar]

Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)


Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)

Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)


F53N-ES145.059145.157


RF85-10N-ES, F85-10N-ES – STAINLESS STEEL FBA


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Tech

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SAFETY DEVICES

The best Flashback Arrestors in the world• a large surface area flame arrestor FA of stainless steel

construction extinguishes any dangerous flashback entering the device in any direction



• a filter at the gas inlet protects the arrestor against dirt contamination, extending the service life (only RF85-10N-ES)

Operation / Usage• Flashback Arrestors are used to protect gas cylinders

and pipeline outlet points (hoses and any equipment) with high flow against dangerous reverse gas flow (RF85-10N-ES) and flashbacks

• without non-return valve (F85-10N-ES) for lower workingpressures with low pressure drop i.e. before and after analysers

• ideal for use with corrosive gases in the chemical industry,process technology or in the laboratory area



Maintenance• annual testing of the non-return valve, body leak

tight-ness and flow capacity is recommended


• Flashback Arrestors are only to be serviced by the manufacturer. The dirt filter may be replaced by competent staff

ApprovalsCompany certified according to ISO 9001:2000 and ISO 14001





Ø 3

4 m

m(1

.34

inch

)


Ø 3

4 m

m(1

.34

inch

)

Safety devices F85-10N F85-10N/H

X

–

X

385

BAM/ZBA/003/04

Housing – Stainless steel;Flame arrestor – Stainless steel;

Seal – Elastomer


–

5.0

5.0

5.0

4.0

5.0

143.028

143.122

–

–


9.0

143.100

–

–

–

Order-No.

–

–

10.0

5.0

10.0

1.5

5.0

5.0

5.0

4.0

5.0

143.061

143.069

143.031

143.048

30.0

30.0

143.101

143.119

143.163

143.134

–

–

–

–

–

–

–

–

10.0

5.0

10.0

9.0

143.077

143.087

–

143.076

RF85-10N RF85-10N/H

X

X

X

385

Model …-ES

Flame arrestor FA

Non-return valve NV

Temperature sensitivecut-off valve TV

Weight [g]

Approval BAM

Material

Gases

Acetylene (A)

Town gas (C)

Natural gas (M)

LPG (P)

Hydrogen (H)

Ethylene (E)

Connections

1/4” NPT F

3/8” NPT F

9/16”-18UNF VCR

7/8” -14UNF VCR

Gases

Oxygen (O)

Compressed air (D)

Connections

1/4” NPT F

3/8” NPT F

9/16”-18UNF VCR

7/8” -14UNF VCR

Order-No.

30.0

30.0

143.149

143.198

–

–

–

–

–

–

–

–

F85-10N-ES / F85-10N/H-ESRF85-10N-ES / RF85-10N/H-ES

RF85-10N-ES VCRRF85-10N/H-ES VCR


RF85-10N-ES, F85-10N-ES – STAINLESS STEEL FBA


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SAFETY DEVICES

RF85-10N/H-ES143.076143.077143.087




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RF85-10N-ESRF85-10N-ES VCR143.031143.048143.061143.069143.101143.119143.134143.163





Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)


Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)

Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)


F85-10N-ES143.028143.122143.149143.198


RF85-30N-ES, RF85-30N/H-ES – STAINLESS STEEL FBA


Pro

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Dat

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e


SAFETY DEVICES



Benefits

• a large surface area flame arrestor FA of stainless steel construction extinguishes any dangerous flashback entering the device in any direction


• a spring loaded non-return valve NV prevents slow or sudden reverse gas flow forming explosive mixtures in the gas supply

• a filter at the gas inlet protects the arrestor against dirt contamination, extending the service life

Operation / Usage

• Flashback Arrestors are used to protect gas cylinders and pipeline outlet points (hoses and any equipment) against dangerous reverse gas flow and flashbacks

• ideal for use with corrosive gases in the chemical industry, process technology or in the laboratory area

• for pipeline outlets and single cylinders with high users for example supply units for gas cutting machines


• only one piece of equipment may be connected to a single Flashback Arrestor


Maintenance

• annual testing of the non-return valve, body leak tightness and flow capacity is recommended


• Flashback Arrestors are only to be serviced by the manufacturer. The dirt filter may be replaced by competent staff

Approvals

Company certified according to ISO 9001:2000 and ISO 14001CE-marked according to: - PED 97/23/EG

Model Safety devices RF85-30N-ES RF85-30N/H-ES

Flame arrestor FA X X

Non-return valve NV X X

Temperature sensitive cut-off valve TV X X

Weight [g] 4455 4344

Material Housing – Stainless steel;

Flame arrestor – Stainless steel; Seal – Elastomer


Acetylene (A) 1.5 –

Town gas (C) 5.0 –

Natural gas (M) 5.0 8.0

LPG (P) 3.5 5.0

Hydrogen (H) 4.0 11.0

Ethylene (E) 4.0 –


3/4“ NPT F 147.027 147.039

1“ NPT F – 147.047


Oxygen (O) 30.0 –

Compressed air (D) 30.0 –


3/4“ NPT F 147.028 –

RF85-30N-ESRF85-30N/H-ES

Ø 84 mm

appr

ox. 1

62 m

m


RF85-30N-ES, RF85-30N/H-ES – STAINLESS STEEL FBA


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ical

Dat

a

SAFETY DEVICES

RF85-30N-ES 147.027147.028

RF85-30N/H-ES 147.039147.047


Sta

ndar

d vo

lum

e flo

w [N

m3 /h

] (1

013

mba

r / 1

4.7

psi,

0 °C

/ 32

°F

)


Inlet pressure: PV [bar] Opening pressure: 10 mbar

0.05

0 0

0.1 0.2 0.3 0.4 0.6 1.0 1.5 2 3 4 6 10

P=Pv

P=0.3 bar

P=0.6 bar

P=0.6 bar

P=0.3 bar

202

4

6

8

10

12

14

16

18

20

406080

100120

140160180200220240260

280300320340360

380400

12

P=Pv

Sta

ndar

d vo

lum

e flo

w [N

m3 /h

] (1

013

mba

r / 1

4.7

psi,

0 °C

/ 32

°F

)

Conversion factors: Acetylene x 1.04 Butane x 0.68 Natural Gas x 1.25 Methane x 1.33 Propane x 0.80 Oxygen x 0.95 Town gas x 1.54 Hydrogen x 3.75

Conversion factors: Acetylene x 1.04 Butane x 0.68 Natural Gas x 1.25 Methane x 1.33 Propane x 0.80 Oxygen x 0.95 Town gas x 1.54 Hydrogen x 3.75

Inlet pressure: PV [bar] Opening pressure: 10 mbar

0.05

0

p=p

p=0.6 bar

p=0.3 bar

p=p

p=0.6 bar

p=0.3 bar

70

50

60

40

30

20

10

200

300

400

600

500

800

700

900

1000

0

100

1100

1200

v

v80

0.1 0.2 0.3 0.6 1.0 1.5 2 3 4 6 8 10 20 3015


F100N-ES – FBA FOR HIGH PRESSURE HYDROGEN


Pro

du

ct In

form

atio

n /

Tec

hn

ical

Dat

a

K7

sub

ject

to c

hang

e


SAFETY DEVICES

WITT Flashback Arrestors for reliable protection against dangerous flashbacks according to EN 730 / ISO 5175-1, for hydrogen (H2) up to 17 bar. Every Arrestor 100% tested.

Benefits

• a large surface area flame arrestor FA of stainless steel construction extinguishes any dangerous flashback entering the device in any direction


Operation / Usage

• the Flashback Arrestors are used to protect gas cylinders and pipeline outlet points (hoses and any equipment) against flashbacks at highest working pressures up to 17 bar, at hydrogen in case of flame spraying

• ideal for use with corrosive gases in the chemical industry, or process technology



Maintenance

• annual testing of the body leak tightness and flow capacity is recommended

• Flashback Arrestors are only to be serviced by the manufacturer

Approvals Company certified according to ISO 9001:2000 and ISO 14001

Model

Safety devices F100-17N-ES

Flame arrestor FA X

Temperature sensitive cut-off valve TV X

Weight [g] 1236

Material Housing – Stainless steel;

Flame arrestor – Stainless steel; Seal – Elastomer


Hydrogen (H) 17.0


1/2“ NPT F 210.000012

F100-17N-ES 210.000012

Sta

ndar

d vo

lum

e flo

w [N

m3 /h

] (1

013

mba

r / 1

4.7

psi,

0 °C

/ 32

°F

Inlet pressure: PV [bar]

F100N-ES

Flow diagram for hydrogen (20 °C / 68 °F)

appr

ox. 4

8 m

m

approx. 103 mm

0

0

P=Pv

P=0.3 bar5

1510

20253035404550556065707580859095

100

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

P=0.9 bar

P=1.5 bar

P=3 bar

P=5 bar


FN12 & FN40 – FOR ACETYLENE


Pro

duc

t In

form

atio

nTe

chni

cal D

ata

L5su

bje

ct t

o c

hang

e

SAFETY DEVICES

Ø 70 mm(2.75 inch)

ca. 1

60 m

m(6

.30

inch

)

Ø 70 mm(2.75 inch)

ca. 2

00 m

m(7

.87

inch

)

Decomposition Arrestors

WITT Decomposition Arrestors for reliable protection against decomposition of acetylene and flashbacksEvery Arrestor 100% tested. Certified and under surveillance

The best Decomposition Arrestors in the world

• a large surface area flame arrestor FA of stainlesssteel construction:- stops dangerous decomposition of acetylene

independent from flow direction- extinguishes any dangerous flashback entering

the device in any direction• a temperature sensitive cut-off valve TV extin-

guishes sustained flashbacks long before the internal temperature of the arrestor reaches a dangerous level

Operation / Usage

• as a Decomposition Arrestor in low pressure pipe-lines for protection from cylinder equipment andbundles

• as a safety device (FN40) to protect against flash-backs in accordance to EN 730

• as a safety device to protect pipelines in supply systems

• FN40 for double flow capacity• WITT Decomposition Arrestors may be moun-

ted in any position / orientation• the maximum ambient / working temperature

is 70 °C / 158 °F

Maintenance• it is recommended that an annual body leakage

test is performed• Decomposition Arrestors are only to be serviced

by the manufacturer

ApprovalsCompany certified according to ISO 9001:2000and ISO 14001 CE-marked according to:- PED 97/23/EG

ModelMax. working pressure

[barg]Housing-Material

Seal-Material

Weight[g]

Connection[inch]

Order-No.

Acetylene (A) 1.5 bar

Brass Elastomer

3091 G 1.1/2 RH 021.001

300.120HR 2/1.1 G6483rab 5.1)A( enelytecA

600.120HR 2/1.1 G6483rab 0.3)H( negordyH

Natural gas (M) 2.0 barLPG (P) 1.5 bar

3846 G 1.1/2 RH 021.008

FN12BAM/ZBA/003/04

FN40

FN40

FN40


FN40FN12


FN12 & FN40 – FOR ACETYLENE


Tech

nica

l Dat

a

SAFETY DEVICES

FN12 Flow diagram for air (20 °C / 68 °F)


Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)

FN40 Flow diagram for air (20 °C / 68 °F)


Sta

ndar

d v

olu

me

flow

[Nm

3 /h]

(101

3 m

bar

/ 1

4.7

psi

, 0 °

C /

32

°F)

L5su

bje

ct t

o c

hang

e

Flame arrestor FA Melting body fromtemperature sensitivecut-off valve TV

Temperature sensitivecut-off valve

Conversion factors:Acetylene x 1.04Natural Gas x 1.25Methane x 1.33Propane x 0.80Hydrogen x 3.75

Conversion factors:Acetylene x 1.04


HDS 17 – FOR ACETYLENE


Pro

duc

t In

form

atio

nTe

chni

cal D

ata

B6

sub

ject

to

chan

ge

SAFETY DEVICES

Ø 50 mm(1.97 inch)

ca. 1

52 m

m(5

.98

inch

)

Automatic Quick Acting Shut-Off Device HDS17

WITT Automatic Quick Acting Shut-Off Devices (slam shut valves) for reliable protection against dangerous decomposition of acetylene in high pressure pipelines in accordance to EN ISO 14114 Every Arrestor 100% tested. Certified and under surveillance

The best Automatic Quick Acting Shut-Off Devicesin the world

• a pressure sensitive piston valve stops explosivedecomposition of acetylene

• immediately cuts off the gas supply in case of decomposition of acetylene

Operation / Usage

• as an Automatic Quick Acting Shut-Off Device according to EN ISO 14114 in high pressure pipelines, which are immediately supplied by more than six cylinders

• WITT Automatic Quick Acting Shut-Off Devicesmay be mounted in any position / orientation


Maintenance• it is recommended that an annual body leakage

test is performed

• Automatic Quick Acting Shut-Off Devices are onlyto be serviced by the manufacturer

Approvals

Manufactured in accordance to EN ISO 15615


ModelMax.

working pressure[barg]

Materials Weight [g]

Connection[inch] Order-No.

HDS17BAM/ZBA/003/04 Acetylene (A) 25.0 bar

Aluminium / galvanised steel,

chromed, Elastomer

1797 G 3/4 RH 017.001



HDS 17 – FOR ACETYLENE


Tech

nica

l Dat

a

SAFETY DEVICES

HDS17 Flow diagram for acetylene (20 °C / 68 °F)

Pressure difference: ΔP [bar]

Stan

dard

vol

ume

flow

[Nm

3/h]

(101

3 m

bar /

14.

7 ps

i, 0

°C /

32 °F

)

B6

sub

ject

to

chan

ge

pressure sensitivepiston valve


f.t.i ltd – head office

unit 13, april court, sybron way, jarvis brook, east sussex. tn6 3dz

t: 01892 669939 f: 01892 669594 e:[email protected] www.ftipv.com

Documents

Flash Back Arrestors · RF53N, -DN, -NU, -U, -NSK – BRASS FBA CONTROLLING PRESSURE & VACUUM Product Information Techical Data C5 subject to change SAFETY DEVICES Ø 24 mm (0.95