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.
Technical Features
- Available in steel or stainless steel
- Selection of body material as per German DIN EN12284, AD2000 Series W
- Working mediums: refrigerants as per EN 378 p. 1, e. g. NH3, R22, R134a and blends with refrigerator oil; neutral, gaseous and liquid mediums; glycol-based cold brine
- Installation is possible in any position but the flow direction must be observed
- HRAR/HRAB with Electric Actuator:
- Electric actuator is designed for ambient temperatures of -40 °C up to +60 °C, enclosure protection: IP68 as per EN 60529, mains: 220V 50 Hz 3-ph AC, insulation class: F, tropicalized, motor protection: thermoswitch 140 °C NC, heater: 110V-250V AC/DC self-regulating
| 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 |
Downloads
Service Products
GEA Ammonia Dryer
The GEA Ammonia Dryer removes water from the refrigerant cycle and makes the perfect addition to ammonia refrigeration systems along with filters and purgers.
GEA Service Kits for screw and reciprocating compressors
Welcome to the world of simplicity with GEA Service Kits for screw and reciprocating compressors. Our mission is clear - to make your experience with original spare parts seamless and your operations smoother than ever. "Take it easy, use a kit" is not just a tagline – it is a promise we deliver on.
PR-OLEO® Premium-Quality Ammonia Refrigeration Oils
PR-OLEO® ammonia oils are the natural choice to optimize industrial cooling and heating applications operating with reciprocating or screw compressors.
GEA Insights
Heat pumps fast-track district heating decarbonization
The impact of global warming is increasingly apparent all over the world. Towns and cities everywhere face the same challenge: providing their communities with reliable, affordable, sustainably sourced heat. GEA spoke with an expert in the field, Kenneth Hoffmann, Manager, Heat Pumps at GEA Heating & Refrigeration Technologies, about tackling global warming faster.
Living the digital future of dairy farming with GEA
Something caught Farmer Tom's eye. Instead of another product demo, GEA showcased innovations via AR. That's only the start of GEA's interactive digital farm.
GEA homogenizers power bioinks for regenerative medicine
GEA scientists are working with researchers at the Graz University of Technology to configure a homogenization process and technology that turns eucalyptus pulp into 3D-printed, organic structures mimicking human veins, arteries and other tissues.
