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 42 is based on ULTRA 40 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. 5 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 — minimal noise emission no leaks – using of a spring loaded valve assembly with elastomer sealing in accordance to DIN EN ISO 5175-2 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 WITT non-return valves may be mounted in any position / orientation
Технические характеристики
CharacteristicsConnexionDINApplicationsfor gasMaterialbrass, stainless steel, aluminumOther characteristicsspring, compact, modularDN
2.5 in
Pressure
Max.: 20 bar (290.1 psi)
Min.: 0 bar (0 psi)
Temperature
70 °C (158 °F)
