H2FR 2-way Control Valve

The Clorius H2FR 2-way control valve is mainly intended for the control of cooling systems. The H2FR valves are used in conjunction with temperature or pressure differential regulators for controlling industrial processes or cooling systems. As the reverse acting valves are held in a closed position using a built-in spring, the max. differential pressure, ΔpL, against which a valve can close depends on the spring. When opening the valve, the actuator has to overcome the spring force. The table in the datasheet shows max. allowable values of ΔpL as well as the max. allowable inlet pressures for opening the valves, p1max, for various actuator forces.

Design

The valve components – spindle, seat and cone – are made of stainless steel. The valve body is made of cast steel GP240GH (GS-C25) with flanges drilled according to EN 1092-1. The thread for the actuator connection is G1B ISO 228. The valves are double-seated. The leakage rate is less than 0.5% of the full flow (according to VDI/VDE 2174).

Reverse acting

Without an actuator being connected, the valve is held in a closed position using a spring. With pressure on the spindle, the valve opens. In connection with our actuators, the valves act as “cooling” valves, i.e. they open at rising temperatures. The quadratic characteristic will not cease until the flow has dropped below 4% of the full flow.