Product characteristics
It controls and maintains a preset upstream pressure regardless of variations in flow
rate. Always mounted in line, it prevents the pump from reducing its suction pressure below
the security point. It prevents also from exceeding the pumping capacity when the demand
is higher
Working principle
.
When upstream pressure is getting lower than the pressure required by the pilot ,
the pilot will close and limit the flow circulation. The upstream pressure pushes on the
membrane of the main valve A which closes.
When upstream pressure increases, pilot will open and release the pressure from
the membrane of the main valve A which opens.
