Horizontal rotalock service valve with a 1-3/4-12 rotalock thread, 1-3/8" sweat connection, and an opposite-side 1/4" SAE gauge port. Rotalock valves thread onto compressor suction and discharge stubs and liquid receivers, giving a removable, gasket-sealed isolation point for service, evacuation, and compressor changeout in refrigeration and air-conditioning circuits.

Distributed by Refrigeration Sales, Inc., catalog 091-400F230/140OZ. The 1/4" gauge port accepts a schrader fitting or hose for pressure readings and charging without breaking the main line. Zinc-plated steel body for condensing-unit and rack service.

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