A manually operated valve that prevents backflow in a pipeline when closed.
SDNRV
Definition
Screw Down Non-return Valve
sdnrv means Screw Down Non-return valve.
✓ Verified term
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Screw Down Non-return Valve
sdnrv means Screw Down Non-return valve.
A manually operated valve that prevents backflow in a pipeline when closed.
You might also be looking for