What is a Non-return valve?
A Non-return valve (NRV) also know as a check valve. A type of valve that opens using pressure. NRV allows liquid flows in one direction.
Dual plate Non-return valve exploded view | Parts
Parts.
1; Teflon gasket
2: Disc
3: Bolts
4: Guide
5: Pin
6: Spring
7: Body
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