Chicago Faucets’ STB and STC series heavy-duty commercial stop valves are made from forged brass and metal parts. Metal valve stems operate smoothly and feature lock shield caps with loose key handles to prevent valve tampering. The loose keys are included with every valve. The stops are available with two different valve designs: a 1/4-turn ball valve that provides fast open and close operation and a multi-turn compression valve that features fewer parts and can easily be serviced if necessary.