NR-240CT8 8” ANSI 150
NR-290CT10 10” ANSI 300
NR-190CT6 4” ANSI 300
NR-15POP1-4D 3/4 NPT
NR-18POP1-4D 1 NPT

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.

Compressor Valves

  • Plates Valves
  • Ring Valves
  • Reed Valves
  • Concentric Valves
  • Poppet Valves
  • SNC Valve
  • SR
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Dott. Ing. Mario Cozzani s.r.l has developed a new highly resistant material to be used for plates or rings on valves of reciprocating compressors in extreme working conditions.

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Unloading Systems

For unloading the compressor, various actuator configurations are available, acting on the suction valves keeping them open and excluding the flow of the respective cylinder or effect. The actuators are specifically designed according to the compressors working conditions, following the customers technical instructions and when necessary, in conformity with international norms.

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Stepless Capacity Control (FluxToFlow)

FluxtoFlow™ an electromechanical actuator system for the stepless capacity control in reciprocating compressors has been completely developed by Dott. Ing. Mario Cozzani S.r.l. in order to meet growing need of energy saving, stability of the process and reduction of emissions.

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