Pressure Equalization Flapper (PEF)

A Pressure Equalization Flapper, or "PEF", is only required for higher profile walleye and bay boats where the livewell overflow is 8"-12" above lake level. If it’s more than 12" use the V4 valve. PEF is not generally required for low profile bass boats.

While off plane, in the AUTO position, water enters the valve from both the livewell drain and the transom thru-hull. As the water level in the livewell increases so does the pressure on the transom check feature of the valve, reducing the ratio of fresh to recirculated water. When this pressure is too great, PEF insures that enough fresh water is added to force the upper used water out.