Safety Group 645/FN40

Data sheet Quotation request

Parallel bundle of 2 or 4 decomposition arrestors FN4, to protect against dangerous decomposition of acetylene in low-pressure pipelines, for high flow rates

highest quality from the world market leader
safety elements: flame arrestor [FA], temperature-sensitive cut-off valve [TV]
stops the explosive decomposition of acetylene via pressure-controlled quick-acting piston valve
every device is tested before delivery
470 X 260 mm, 46 kg
Q= ca. 560 m³/h (free flow-off)

Information

Parallel connection from 2 and 4 Flashback Arrestors model FN40.
WITT Safety groups for reliable protection against decomposition of acetylene. For applications with high flow rates. Every safety group 100% tested.

Benefits

a large surface area flame arrestor FA of stainless steel 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 extinguishes sustained flashbacks long before the internal temperature of the arrestors reaches a dangerous level

Operation / Usage

as a Decomposition Arrestor for acetylene in medium pressure pipe-lines for protection from cylinder equipment and bundles according to DIN EN ISO 14114
as a Decomposition Arrestor to protect pipelines in supply systems
WITT safety groups may be mounted 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
safety groups are only to be serviced by the manufacturer

Options

flange end connections (nominal diameter 32 - 65)
connection: two-sided female thread (G-; NPT-thread; Rc-thread)

Approvals
Company certified according to ISO 9001and PED 2014/68/EU Module H
CE-marked according to PED 2014/68/EU