Back flow Valve replacements, Pair, for oilless vacuum pumps,

Back flow Valve replacements, sold in Pairs, for oilless piston vacuum pumps, VIOT brands

FEATURES:

Back flow Valve replacements, sold in Pairs, for oilless piston vacuum pumps, VIOT brands (may fits other brands, ask). the back flow valve is a sheet-metal like think stainless steel piece, located on the top cover of the cylinder, there is one back flow valve on each side of the cover for each cylinder. so there are 4 total if you have the VIOT twin piston pump. 2 are protected under a block, 2 are exposed. Make sure this valve is clean and dirt-free, and laying on the cover flat to cover the hole underneath completely. Be careful when you clean this piece, do not bend it. Any damage or dirt will make a internal leak here and the pump will not get to the suction power if supposed to generate. Packing List:

• 2 pieces in an order