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Non Return Valves

Cozzani Non Return or Check valves with minimal pressure drop are suitable for pulsating conditions which are typical for reciprocating compressors, for vertical or horizontal installation. They are designed and tested according to the European Directive 2014/68/UE (P.E.D.) concerning pressurised equipment.

The dimensions are in conformity with ANSI, ISO, DIN and UNI rules, they cover a wide pressure range up to ANSI 2500 (425 bar) and a temperature range from – 196 to +250°C with sizes up to 20” (508 mm).

Various materials are used (AISI 410, AISI 304, AISI 316 Viton ®, Kalrez ®, Peek™) according to the type of gas,the operating conditions and the customer requirements. By means of CFD software during the designing process, valve high efficiency is achieved.