Clear View Filtration 148 Features:

The Replacement Air Valve is for use withall 4 in. and 6 in. Clear View Filters. This Kitcontains one Air Valve Fitting and one Cap. Air valves do not need to be replaced very often and rarelygo bad. This is the Valve where air is applied to empty the oil out of See-Through Filter Assemblies.When a small shot of air is applied to the filter assemblies the oil pump gears on the inlet side restrictsoil from going back through the inlet line. The oil is pushed out the outlet side into the motor basicallypre oiling the engine. The system can not be over pressurized no mater how long air is held on. Canalso use a hand bicycle pump to empty filter assembly.