Gas non-return valve NV654

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WITT non-return valves (check valves) for reliable protection against dangerous reverse gas flow. Every non-return valve (check valve) 100% tested. Benefits: a spring-loaded non-return valve (check valve) prevents a reverse flow of gases which could lead to unwanted gas mixtures low pressure drops – using complex valve assembly with low opening pressures (approx. 30 mbar) no leaks – using a spring-loaded valve assembly with elastomer sealing 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 compact design, small mounting dimensions Operation / Usage: non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow WITT non-return valves (check valves) may be mounted in any position / orientation Maintenance: annual testing of the non-return valve (check valve) and body leak tightness is recommended WITT is happy to supply special test equipment non-return valves (check valves) are only to be serviced by the manufacturer Approvals Company certified to ISO 9001 and PED 2014/68/EC Module H Designed for Oxygen Service in accordance with EIGA 13/20 and CGA G-4.4: Oxygen Pipeline and Piping Systems