Nostotarkistusventtiilissä
Nostotarkistusventtiili, often translated as lift check valve or swing check valve, is a type of automatic valve that prevents backflow in a pipeline. It operates based on the pressure of the fluid. When the fluid flows in the desired direction, the pressure opens the valve, allowing the fluid to pass through. If the flow reverses or stops, the pressure drop causes a disc or plug, guided by a central stem, to swing shut, thereby blocking the return of the fluid.
These valves are commonly used in applications where preventing backflow is crucial, such as in pump discharge
Lift check valves are relatively simple in construction and operation, making them a reliable and cost-effective