Oxygen non-return valve ULTRA 22

for gasDINsafety

free combination of material for housing (brass, stainless steel, aluminum) and seal (NBR/CR, FPM/FKM, EPDM/FFKM), with or without filter for special requirements e.g. corrosive environments, acetylene, lightweight construction, temperatures above 70 °C/ 158 °F based on ULTRA 20 including: safety element: non-return valve [NV] every non-return valve 100% tested DIN EN ISO 5175-2 ultra-low opening pressures (approx. 4 mbar), ultra-low pressure drop WITT non-return valves for reliable protection against dangerous reverse gas flow. Flow-optimised valve system causes very low pressure drop at minimal noise emission. Every non-return valve 100% tested. ULTRA 22 is based on ULTRA 20 and is customised according to the requirements of the customer - ideal for special requirements. A modular system which allows flexible material combinations for housing and sealings. Combination possibilities housing available in brass, stainless steel or aluminium sealings of NBR, CR, FKM, EPDM, FFKM for example with or without dirt filter in gas inlet Benefits precisely tailored design for special requirements. For example corrosive environments, acetylene, ultra-lightweight construction, temperatures above 70 °C / 158 °F a spring loaded non-return valve prevents back feeding of gases which could lead to unwanted gas mixtures low pressure drop – using complex valve assembly with low opening pressures (approx. 4 mbar) stainless steel filter (100 μm) in the gas inlet protects the non-return valve against dirt contamination, extending the service life flow-optimised valve system for: - ultra low pressure drop