Brass non-return valveNV2000

spring

Non-return valve for the prevention of unintended gas mixtures, for flow rates up to 945,994 scfh (air), for use in thermal processing plants, certified to EN746-2, DN 80-200 safety element: non-return valve [NV] every non-return valve 100% tested ultra-low opening pressures (approx. 0.0725 psi), ultra-low pressure drop dirt filter (100 μm) in the gas inlet to be mounted in vertical position / orientation 12.48-13.26 X 15.33-17.55 inches, 2000 oz 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, NV2000 approx. 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 (check valve) against dirt contamination, extending the service life diverse applications – useful for many technical gases Operation / Usage: non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow. Use is possible for applications according to EN 746-2 the NV2000 may be mounted vertical in bottom-up flow direction the maximum ambient / working temperature is 70 °C / 158 °F 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