Brass non-return valve 70 / 70U

brass non-return valve
brass non-return valve
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70 °C (158 °F)


16 bar (232.1 psi)


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 the maximum ambient / working temperature is 70 °C / 158 °F 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


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.