For unloading the compressor, various actuator configurations are available, acting on the suction valves keeping them opened and excluding the flow of the respective cylinder or effect.
Such actuators can be diaphragm or piston type, activated by air to load or air to unload, with threaded or flanged connections, with or without gas recycling opening.
The actuators are specifically designed according to the compressors working conditions, following the customers technical instructions and when necessary, in conformity with international norms.
Upon the customer request, the actuators are designed, made and tested in accordance to the European directive ATEX 94/9/CE to be used in potentially explosive areas. Also port unloaders and plug unloaders are available for gas applications.
Cozzani 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 97/23/CE (P.E.D.) concerning pressurised equipment.
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.