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Flash Arrestor FL

Product Code: 99150003

Price:
$285.00

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This re-settable flashback arrestors offer four (4) safety devices in each unit. Safety features include protection against flashbacks with a wide range of mixtures of oxygen or air with flammable gases including hydrogen, acetylene, methane, and LPG gases.  The design includes a built in non return (check) valve to stop reverse flow and a thermal shut off which stops gas flow in the event a of hose or pipe line fire.  An easily re-settable pressure control stops gas flow in the event of reverse flow or a flashback that creates 10 psig back pressure.  This feature alerts the user that a reverse flow or a flashback of greater than 10 psig has occurred.  These units are easily re-set by pulling up on the pressure control ring (shown at right), no disassembly of the gas line or special tools are needed.  The 8491 Series high flow capacity makes them suitable for a broad range of applications (see flow table).  Units are U/L listed and meet ISO 5175, EN 730, BS 6158, and AS 4603 standards.

 Fuel Cell Flash Arrestor Specification Sheet

Flash Arrestor FL Features:

• Inlet: 9/16-18 LH female
• Outlet: 9/16- 18 LH male
• 100% flashback tested after assembly
• U/L listed and meets strict international standards
• Alerts user by shutting off gas flow in the event of a reverse flow or flashback exceeding 10 psig back pressure (captures back pressure in the housing, no flame or gas is exhausted to the atmosphere)
• Stainless steel flame barrier positively extinguishes flame within the housing
• Checks reverse flow and provides positive shut-off of reverse flow over 10 psig
• Thermal Cut-Off at 165°C
• Built-in 100 micron stainless steel sintered filter on inlet
• High flow capacity (see flow performance table)

Working Pressures:

• Acetylene: 15.0 psig
• Hydrogen / Oxygen: 50.0 psig
• Hydrogen / Air: 150.0 psig
• LPG: 50.0 psig
• Oxygen: 143.0 psig

Materials of Construction:

• Body: Alloy 360 brass
• Internals: Brass
• Flame Barrier: Stainless steel
• Elastomers: Neoprene

Working Pressure
(U/L) (Min 1 PSIG Inlet Required)
Gas Pressure PSIG
Acetylene 15
Hydrogen/Oxygen 50
Hydrogen/Air 150
Methane/LPG 50
Oxygen 143

 

Flow Performance
Inlet Press. (PSIG) Air Flow (SCFH)
7.3 231
14.5 465
21.8 725
36.3 1041
72.5 1933

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