Anti-Drainback Valve

An anti-drainback valve is a check valve that prevents oil from flowing out of the filter when the engine is stopped. It is very similar to a check-valve that may be used in a well to keep the water from falling back down the pipe when the pump is turned off.

anti drain back valveWithout an anti-drainback valve, oil must flow through and refill the oil filter before proper oil pressure is reached, the anit-drainback valve allows optimum oil pressure to be reached much quicker by keeping the oil filter filled with oil.

2 comments on “Anti-Drainback Valve
  1. richard sams says:

    what filter would work on a 2209 chev equinox 3.4 engine

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