1. It has multi-type specifications and can be used in various maintenance systems;2. The circulation performance is excellent, and it can pass the flow rate of the same capacity in the chlorine pipe;3. It is convenient and quick to unplug and plug in the pipe cover, and the quick connection part of the remaining pipe is safe, reliable and durable;4. The screw part is sealed, the M5 metric thread is fully sealed, and the silicone screw rubber quick-connect part is leaking;5. Nickel plating can prevent corrosion, contact and pollution, and is easy to use.