Gas non-return valveNV300

threaded safety brass

safety element: non-return valve [NV] every non-return valve 100% tested protects against flashbacks, for fuel gas-compressed air-mixtures ideal for biogas desulphurisation systems dirt filter (100 μm) on gas inlet 65 X 115-130 mm, 1.568 g 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 NV300 – approx. 3.5 mbar no leaks – using of a spring-loaded valve assembly with elastomer sealing stainless steel filter (100 μm) in the gas inlet protects the non-return valve against dirt contamination, 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 WITT non-return valves (check valves) may be mounted in any position / orientation Maintenance: annual testing of the non-return valve (check valve), body leak tightness and flow capacity is recommended