Check out our latest gas safety innovation - the F53Ndeto, now PTB-type-approved to ATEX standards! Detonation/deflagration flame arrestor with non-return valve


WITT is proud to introduce the newest addition to its F53 valve range, the F53Ndeto with ¼" connections. Engineered to provide dependable protection against deflagrations and stable detonations of flammable gases and gas mixtures, this breakthrough is ideal for a wide range of applications in industries such as oil and gas, petrochemicals, chemicals, as well as for safeguarding sensors and laboratory equipment.

What sets it apart? A cutting-edge temperature-sensitive element that swiftly extinguishes sustained flashbacks.

Its sleek and compact design, compliant with DIN EN ISO 16852, and versatility in installation orientation make setup a breeze. Plus, it's backed by EU type-approval from the German Federal Physical-Technical Institute PTB, in accordance with Directive 2014/34/EU (ATEX) standards.

Certified for Group IIA, IIB, IIC flammable gases and gas mixtures per EN/IEC 60079-20-1 (excluding oxygen combinations), the F53Ndeto boasts a sintered chrome-nickel steel flame arrester that reliably halts flashbacks.

But that's not all. To bolster safety further, this innovative device features an additional fail-safe mechanism: the temperature-sensitive element proactively extinguishes sustained flashbacks long before internal temperatures become hazardous. Should temperatures spike beyond a critical threshold, a specialized plastic component melts, sealing the valve and halting gas flow, ensuring maximum user safety.

As a deflagration flame arrester, the F53Ndeto is ideal for safeguarding systems and components with volumes up to 4.6 liters and absolute pressures up to 1.1 bar, perfect for chemical industry applications. For detonation flame arrestor duties, it handles absolute pressures up to 1.5 bar in small pipelines and protects gas analyzers with ease.

Crafted from premium stainless steel (1.4404) with seals composed of FKM or FFKM, the F53Ndeto comes standard with G1/4 female thread connections and can operate at temperatures up to 60°C.

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