Assertion: check valve | /r/CapableOf | prevent flow
Facets:
value: in the opposite direction
type: MANNER
Source sentences:
text: A check valve is a specialty valve used to keep water flowing in one direction only and prevent flow in the opposite direction.
text: Check valves are important in a water heater because they prevent flooding or overflowing.
text: Check valves are used in fluid systems to permit flow in one direction and to prevent flow in the opposite direction.