HBC, 4506010, STEAM HOT WATER FIT ALL RADIATOR VALVE REPLACEMENT WHEEL HANDLE 4 IN 1. The Fit All Radiator Valve Wheel Handle is designed to work with a hot water or steam valve. This radiator valve wheel handle fits most popular stems. Molded, thermal plastic handle. Fits most popular stems. Designed to work with a hot water or steam valve. 4 in one handle sockets. Fits 4 stem sizes.