1/8" Schrader Air Valve

Campbell 1/8 in. Threaded Brass Snifter Air Valve 1 pc

Lead-free air intake valve for shallow and deep-well reciprocating pump installations, this valve admits air into pumps on pneumatic water systems. Manufactured to include no more than 0.25 percent weighted average lead content on wetted surfaces.
Easy to use
Spring does not allow air to return to pipes for draining pipes
Air inlet for water systems and other applications