Gas non-return valve 70

DINthreadedbackflow

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 back feeding of gases which could lead to unwanted gas mixtures low pressure drops – using complex valve assembly with low opening pressures (approx. 4 mbar) brass filter protects the non-return valve (check valve) against flashbacks, extending the service life 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 Operation / Usage: non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow. Use is possible for applications in accordance with EN 746-2 non-return valves (check valves) are proved in accordance with EN 730-2. They may also be used as a safety device to protect against flashbacks (proved in accordance with EN 730-1 point 6.7), which may result from the combustion of natural gas/ LPG with air Maintenance: annual testing of the non-return valve (check valve), body leak tightness and flow capacity 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 CE-marked in accordance with PED 2014/68/EC Designed for Oxygen Service in accordance with EIGA 13/20 and CGA G-4.4: Oxygen Pipeline and Piping Systems