The Craftsman A19712 Check Valve is compatible with Craftsman models: 919.167342, 919.165500, 919.165140, 919.165130, 919.168700, 919.167330, 919.167310, 919.165610, 919.165030, 919.167320, 919.167312, 919.167780, 919.167783, 919.165230, 919.165050, 919.167210, 919.165330, 919.167342, 919.167790. This pressure switch is made for air compressors and replaces part no. AC-0631. Craftsman is a leader in wrench sets, garage door openers, screw drivers, air compressors and much more. With over one billion hand tools sold and countless industry awards, Craftsman is America's number one tool brand.