It is an energy-saving valve, typically installed at the bottom end of the underwater suction pipe of a water pump. It prevents the liquid in the pump pipe from flowing back to the water source, functioning to allow only inflow but no outflow.
Product Overview
It is an energy-saving valve, typically installed at the bottom end of the underwater suction pipe of a water pump. It prevents the liquid in the pump pipe from flowing back to the water source, functioning to allow only inflow but no outflow. The valve cover is equipped with numerous water inlets and reinforcing ribs, which help prevent clogging.
Main Features
Energy-saving, prevents liquid backflow in pump pipes (one-way “in-only” function), and has anti-clogging valve cover with multiple water inlets and reinforcing ribs.
Parameter | Specification |
Size Range | DN25~DN600(1″~24″) |
Pressure Rating | PN10~PN25 (Class 150~300) |
NominalPressure | 1.0~4.0MPa |
Temperature Range | 0℃~200℃ (standard) |
Connection Types | Flanged (GB/T 17241.6 standard) |
Body Material | Ductile Iron (QT450-10), Cast Steel (WCB), Stainless Steel (304/316) |
Trim Material | Stainless Steel (304/316) |
Seat Material | NBR, EPDM |
Test Standards | GB/T 13927, ISO 5208 |
Working Principle
When the water pump starts, the liquid is sucked into the pump pipe through the water inlets on the valve cover, pushing the valve open to allow flow. When the pump stops, the liquid in the pipe exerts reverse pressure to close the valve, preventing backflow to the water source and maintaining the liquid in the pipe.
Structural Features
Maintenance