MT-RSR Coats Tire Changer Rotary Coupling Large O-Ring 81713 Manifold Block Plug It also keeps the pump

It also keeps the pump in a vertical position and at the proper height to prevent the pump from sucking up the “bag” used in many drums

one for evacuation by gravity and one for evacuation by external pump

This means either a pump is broken down and being serviced

w/adjustable ball to stop at desired length

Its 3/8" M-NPT outlet and reel inlet make it reliable and strong

MT-RSR Coats Tire Changer Rotary Coupling Large O-Ring 81713 Manifold Block Plug It also keeps the pumpLarge O Ring for Coats Tire Changer Rotary Coupling Fits the following tire changer brands: Coats 50, 60, 70 Interchangeable Part Numbers: 181713, 8181713, TC181713, TMRTC181713