Flywheel device for connection of copper-aluminum interface of stop valve

The utility model discloses a flywheel device for connection of a copper-aluminum interface of a stop valve, which comprises a copper pipe and an aluminum joint, the inner wall of the copper pipe is sleeved on the aluminum joint, the copper pipe is clamped and locked by utilizing an inner three-jaw chuck to extend into the copper pipe and abut against the inner wall of the copper pipe, and the inner three-jaw chuck is sleeved on the inner wall of the copper pipe. The aluminum connector is clamped on the outer wall of the aluminum connector through an outer three-jaw chuck so that the aluminum connector can be clamped and locked, three grooves are formed in the aluminum connector, an O-shaped sealing ring is connected to the groove located in the middle in a sleeved mode, and the copper pipes are pressed into the grooves in the left side and the right side through rotation of flywheels respectively. The utility model has the advantages of convenience, practicability and manpower saving. 本实用新型公开了一种截止阀铜铝接口连接用飞轮装