Aluminum Storz Coupling has the advantages of simple connection and rapid release of a wide range of application. "Fire hose water tank interface is a commonly used interface in fire fighting work, mainly used for the connection between the hose when the hose is connected, it is a fast interface connected by two pairs of buckle claw chute, with the advantages of simple connection and rapid release. It is used for the connection between hose and hose, fire engine, fire hydrant and water gun, so as to transport water or foam mixture to extinguish fire. It is composed of a body, a sealing ring seat, a rubber sealing ring and other parts. There is a groove on the sealing ring seat to tie the water belt.