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Open centre circuit

Hydraulic equipment connected to priority levels PR1 and PR2 must be closed centre type (Load Sensing), whereas the ones that are not connected to priority levels (EF) must be of the open center type (crossing). In this system with fixed displacement pump, the master priority valve continuously ensures a min. pressure difference between pressure entering the valve and the LS signal  from the priority applications.
When a priority application requires oil, it will convey a pressure signal and the master priority valve ┬«  will reduce the flow towards EF port, up to reaching the required pressure. If the application is on the first priority level and the passage closure towards EF port is not enough to generate the pressure necessary for the application, the master priority valve reduces and if necessary closes the passage towards the second priority level services.
 
PV - Open centre circuit
 
SAFIM bianco su fondo azzurroBrakes on BLU No sfondo
Via D.Livingstone 6 - 41123 Modena - Italy
Tel: +39 059894411 Fax: +39 059894444
C.F. / P. IVA: IT 03485910362                                                                              
 
 

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