Non-return valve (intermediate flange version) for the prevention of unintended gas mixtures, for flow rates up to 8100 m³/h (air), up to 16 bar, for use in thermal processing plants, certified to EN746-2, DN 40/50 with welding neck flanges for simple installing and removing safety element: non-return valve [NV] every non-return valve 100% tested ultra-low opening pressures (approx. 3 mbar), ultra-low pressure drop ideal for biogas desulphurisation systems dirt filter (100 μm) on gas inlet WITT non-return valves for reliable protection against dangerous reverse gas flow. Now available also with welding neck flanges for simple installing and removing. Every non-return valve 100% tested. Benefits a spring loaded non-return valve prevents back feeding of gases which could lead to unwanted gas mixtures low pressure drops – using complex valve assembly with low opening pressure – approx. 3.0 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 dirt filter in gas inlet are replaced quickly and easily 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 non-return valve as „intermediate flange version“ guarantees quick and uncomplicated removal and installation at replacement and annual testing
Технические характеристики
CharacteristicsFluidfor gasBodyflangeApplicationssafetyMaterialstainless steelOther characteristicsspringDN
40 mm, 50 mm (1.575 in)
Pressure
16 bar (232.1 psi)
Flow rate
8,100 m³/h (286,048.8 ft³/h)
