CM-SNAP JB Industries SnapMate High Flow Service Quick Connector For CoreMax Valve Cores. The SnapMate service connectors are designed to provide quick connections to CoreMax Valve Cores as well as standard access valves. The Collets grip on the threads and are specifically designed for the Service Industry by providing quick and easy connections to all 7/16-20 (1/4" SAE 45º Flare) access valves. Used by HVAC service technicians to evacuate and charge refrigerant during field servicing. Brass collet grips and hardened steel sleeve, for pressures up to 625 psi, 7/16-20 (1/4" SAE 45º Flare) termination.