Hansen Shut-off Valves are designed specifically for use in industrial ammonia and large commercial halocarbon refrigeration systems. These rugged valves are a strong, reliable component for modern industrial refrigeration applications and are suitable for liquid, suction, hot gas, discharge, recirculating liquid or oil lines. Screwed Bonnet Threaded Valves feature non-leak stainless steel stems, and ductile iron bodies. Threaded, Socket Weld and Butt Weld Bolted Bonnet Valves feature large bonnet bolts for exceptional strength, non-leak stainless steel stems, and forged steel or low temperature cast steel bodies.