Regulator Check Valve Set Hitch Ball Threading at the base of

Threading at the base of the D-50-C welding tip tube is 5/16" -27

Pack Rat Track Clamp Kit provides for quick

Premium Flex® 4 1/2 x 1/8 x 5/8-11 Pipeline

This one is a 200 Amp gun for Lincoln with a 15' cable

1/4" NPT Outlet Standard Left Handed Thread

Regulator Check Valve Set Hitch Ball Threading at the base ofRegulator check valves fit on the end of the regulator before the welding hose. They prevent the reverse flow of gas back through the hose toward the tanks. This is a necessary safety measure since most cutting torches as sold without check valves on them to make the price more attractive. These are "B" sized check valves for 3 16, 1 4, 5 16 and 3 8 twin welding hose.