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GESTRA 17-RK41-100 CHECK VALVE
GESTRA RK 41 type check valves are wafer-type (sandwiching between flanges) non-return valves designed to ensure unidirectional flow of fluid and prevent backflow. The "17-RK41-100" designation indicates a version of the RK 41 series with a nominal diameter of 100 mm (DN 100) and possibly a specific pressure rating or material variation. They are widely used in the following applications:
- Heating, Ventilation, and Air Conditioning (HVAC) Systems: In boiler rooms, heating circuits, cooling towers, and air conditioning units to ensure proper flow direction of water or steam.
- Industrial Plants: To prevent backflow in liquid, gas, and steam lines, protecting pumps and other equipment from reverse flow. Used across various industries like chemical plants, power plants, and food processing facilities.
- Water Supply and Wastewater Systems: To prevent fluid from returning in pump discharge lines, storage tank connections, and distribution networks.
- Hot Water Systems: In hot water circulation lines and storage tanks.
- General Process Engineering: For ensuring reliable unidirectional flow in applications such as compressed air systems, steam lines, and condensate discharge lines.
Their compact design allows for easy installation in limited spaces.
GESTRA 17-RK41-100 check valve is a wafer-type non-return valve designed to be sandwiched between pipe flanges, available with or without a spring. It typically features a spring-loaded design, which allows the valve to be installed in any position (horizontal, vertical, or inclined pipelines). Springless versions are only suitable for vertical pipes with upward flow.
The RK 41 series offers metal-to-metal (standard) or soft seating options (such as EPDM, FPM). For a DN 100 (4 inch) size, the body is typically made of special brass or grey cast iron, depending on the specific configuration. It features a short face-to-face dimension (according to DIN EN 558-1, series 49), offering easy and low-cost installation. The valve disc or cone closes automatically when the flow stops or back-pressure occurs, preventing fluid from moving in the reverse direction. The design is optimized for low-pressure drops and stable operation.