The angle radiator valve is made of a brass body, a brass stem and a plastic handwheel. The radiator valve can connect two pipes in conner. The radiator valves are usually installed on the heating radiator in residential and public buildings. The actuator adjusts the valve opening based on the temperature in the room via a mechanical linkage or pin connected to the valve. The actuator is usually a plastic unit containing a wax plug, the wax plug expands or contracts as the temperature of the room rises or falls. The radiator valve can be set the room temperature according to users' different requirements. It can feel the room temperature and adjust the heat supply according to the current demand at any time, to prevent overheating room temperature, reaching users' most comfortable.The main size is D15, D20 and D32.