Horizontal rotalock service valve with a 1-1/4-12 rotalock thread, 7/8" sweat connection, and a left-side 1/4" SAE gauge port. Rotalock valves thread onto compressor service ports, suction and discharge stubs, and liquid receivers, giving technicians a removable, gasket-sealed isolation point for service, evacuation, and compressor changeout in refrigeration and air-conditioning circuits.

Distributed by Refrigeration Sales, Inc., catalog 091-400E220/130LZ. The 1/4" gauge port accepts a schrader fitting or hose for pressure readings and charging without opening the main refrigerant line. Zinc-plated steel body for condensing-unit and rack service.

Common uses: walk-in cooler and freezer condensing units, supermarket refrigeration racks, commercial HVAC compressor replacement, and OEM service kits. New surplus, available from King Surplus inventory in Del Rio, Texas.