Applicable models: Compatible with Zodiac 180, 280, 380, 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280 and 280 TankTrax. Tip: Replacing the pool cleaner is recommended to remove the gear, clean the sand and reinstall it when it is stuck due to sand, silt, etc. It aims to provide you with a satisfactory shopping experience. We suggest you check the model before ordering. Useful Function: The pool cleaner relief valve is designed for you to have a simple and cheap solution and make the cleaner work properly, aiming at stopping leaks and improving the water, also suitable for salt water pools. Convenient to Install: It is suggested to close the pool cleaner parts tightly when returning the housing cover, otherwise the equipment may not work properly, it is recommended that the water outlet is aligned with the housing water outlet, convenient to install. Premium Material: The pool cleaner part is produced under strict quality control, with sturdy and durable performance designed for