Pilot control valves

PCVD

The pilot valve maintains the differential pressure over the main controller. By this action also flow through a bypass changes and therefore (-p) at the throttling element. Pressure changes from inlet pipe (+p) and from throttling element (-p) are being transferred through the impulse tubes to the main actuator chambers and act on control diaphragm.

PCVP

PCVPQ

Pilot-controlled flow and differential pressure controller is a self-acting differential pressure controller primarily for use in district heating, district cooling or in industrial systems as well. It can be flow and return mounted in applications with and without heat exchanger like large substations and distribution stations. The control function of the PCVPQ controller is defined by the control function of the pilot controller. Setting of flow is done on main controler , setting of differential pressure is done on the pilot controller. Throttle valve data can be found on page 8.

PCVQ

PCVQ is a category of pilot control valves used in pressure and flow control applications. These valves are designed to provide precise temperature control and hydronic balance in various heating and cooling systems, including district heating and cooling networks.

Shut off valves