Regulating valves, Type HRAR, HRAB, HRAR/HRAB with Electric Actuator
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.
HRAR Regulating Valves | HRAB Regulating Valves | HRAR/HRAB Regulating Valves with Electric Actuator | |
Material | steel or stainless steel | steel or stainless steel | steel or stainless steel |
Nominal size | DN 6-250 | DN 10-250 | DN 25-250 Larger nominal diameters upon request, subject to technical feasibility. |
Nominal Pressure Level | PS 25, PS 40, PS 63, PS 160 | PS 25, PS 40 | PS 25, PS 40 |
Temperature range for Standard Valves | -60 °C to +150 °C | -60 °C to +150 °C | -60 °C to +150 °C |
Temperature range for HT Valve Series | -10 °C to +200 °C | -10 °C to +200 °C | -10 °C to +200 °C |
Connection | butt welding and flanged ends as per DIN and ANSI, brazed ends, threaded ends | butt welding and flanged ends as per DIN and ANSI, brazed ends, threaded ends | butt welding and flanged ends as per DIN and ANSI, brazed ends |
Additional information | available with cover extension | available with cover extension | equipped with electric actuator |
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