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The extremely compact design in accordance with DIN EN ISO 16852 and installation in any orientation make installation particularly easy. The fitting has an EU type-approval from the German Federal Physical-Technical Institute PTB, in accordance with Directive 2014/34/EU (ATEX).
For almost all flammable gases and gas mixtures (certified for Group, IIA, IIB, IIC from EN/IEC 60079-20-1), except in combination with oxygen, the F53Ndeto reliably stops any flashbacks by means of a flame arrester made of sintered chrome-nickel steel.
But the WITT innovation offers even more. For even more comprehensive protection, this new device has an additional safety mechanism: thanks to the temperature-sensitive element, even sustained flashbacks are safely stopped long before the internal temperature of the arrestors reaches a dangerous level. If a critical temperature is exceeded, a plastic body melts, closing the valve and stopping the gas supply. This ensures the highest level of safety for the user.
As a deflagration flame arrester, the F53Ndeto is ideal for protecting systems and system components with a maximum volume of 4.6 litres and a maximum absolute pressure of 1.1 bar, for example in the chemical industry. It is used as a detonation flame arrester with a maximum absolute pressure of 1.5 bar in small pipelines and to protect gas analysers, for example.
The high-quality fitting is made of stainless steel (1.4404), the seals are made of FKM or FFKM. WITT offers the F53Ndeto with G1/4 female thread connections as standard. The maximum permitted temperature is 60 °C.
