Check valve suitable for 25/32/38 mm hoses.
The check valve prevents uncontrolled backflow of water and accumulated sediment into the device when the pump is turned off. Water flows back into the pond through the pump when the pump is off.
The check valve can be installed on the hose located between the pump and the filter (for example, BIOklar 30 and higher models). The valve can also function as a connector between two hoses.
