Regulating valves, Type HRAR, HRAB, HRAR/HRAB with Electric Actuator

Regulating Valves

GEA regulating valves (HRAR, HRAB, HRAR/HRAB with Electric Actuator) are designed for installation in industrial heating and refrigeration systems. Actuation is by hand wheel or ratched. These valves are both regulating and shut-off valves. Rotating the stem clockwise will lower the valve disc onto the valve seat and therefore close the pipe, counter-clockwise rotation will lift the valve disc and open the pipe. The regulating function is enabled by a cone on the underside of the valve disc. The maximum diameter of the cone corresponds to the valve’s nominal diameter. The stem sealing is provided by a threaded bush with spring-elastic PTFE ring (HRAR). The stem sealing is provided by a threaded bush and a metal bellows which ensures a complete hermetic sealing (HRAB). The valves are equipped with a back seal. When the valve is fully opened it is possible to replace the threaded bush and the seal.

GEA Insights

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