Wide CompatibilityThe G52 pool cleaner valve is suitable for Zodiac Polaris 180, 280, 380, 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax models. Upgraded VersionCompared with the previous relief valve, our g52 polaris relief valve replacement kit has improved the shell material, crack-resistant polymer construction, will not be easily damaged and has a twice longer service life. G53 Gear MechanismMade of stable and friction-resistant POM material. POM has a very low friction coefficient and good geometric stability, especially suitable for the manufacture of gears and bearings, this material is more able to withstand high water pressure operation. Easy to InstallJust disconnect the old valve and insert the hoses into the connectors of the new one. In addition, if you can't spray water after a certain period of use, we recommend that you disassemble the device and check if there is anything stuck, remove the debris and you can use it normally. It is not manufactured or sold by Polaris, but it has the same performance as the original