A swing check valve is used in a pipeline to ().
A、maintain a preset pressure on the line
B、closely regulate the amount of flow
C、relieve excessive pressure on the line
D、allow flow in one direction only
A、maintain a preset pressure on the line
B、closely regulate the amount of flow
C、relieve excessive pressure on the line
D、allow flow in one direction only
A、stop-check valves installed in the bilge manifolds B、using a positive displacement reciprocating bilge pump C、installing eductors in all bilge rose boxes D、installing a swing check before each bilge valve