Threaded non-return valve ULTRA 20

safetylow-pressurefor gas

WITT non-return valves for reliable protection against dangerous reverse gas flow. Flow-optimised valve system causes very low pressure drop at minimal noise emission. Every non-return valve 100% tested. Benefits a spring loaded non-return valve prevents back feeding of gases which could lead to unwanted gas mixtures low pressure drop – using complex valve assembly with low opening pressures (ca. 4 mbar) stainless steel filter (100 μm) in the gas inlet protects the non-return valve against dirt contamination, extending the service life flow-optimised valve system for: - ultra low pressure drop - minimal noise emission no leaks – using of a spring loaded valve assembly with elastomer sealing in accordance to DIN EN ISO 5175-2 available in brass or stainless steel diverse applications – useful for many technical gases reduce installation costs – the spring loaded valve is not affected by gravity and may be installed in any orientation the same size as model NV200 for easy replacement Operation / Usage non-return valves are used to protect equipment and pipelines against dangerous reverse gas flow. Use is possible for applications according to EN 746-2 WITT non-return valves may be mounted in any position / orientation Maintenance annual testing of the non-return valve and body leak tightness is recommended WITT is happy to supply special test equipment non-return valves are only to be serviced by the manufacturer Approvals Company certified according to ISO 9001 and PED 2014/68/EU Module H CE-marked according to PED 2014/68/EU