【Wide Compatibility】The G52 valve pool cleaner is suitable for Zodiac Polaris 180, 280, 380, 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax models. 【Upgraded Version】Compared to the previous emergency valve, our g52 emergency valve replacement kit for polaris has improved shell material, crack-resistant polymer construction, will not be easily damaged and has a long service life.life twice as long. 【G53 Gear Mechanism】Made of stable and friction-resistant POM material.Pom has a very low coefficient of friction and good geometric stability, especially suitable for manufacturing gears and bearings, this material is more able to withstand high water pressure operation. 【Easy to Install】Simply disconnect the old valve and fit the pipes into the connectors of the new one.Besides, if you can't spray water after a certain period of use, we recommend that you disassemble the device and check if anything is stuck, remove the debris and you can use it normally. Compatible Model: Suitable for Polaris 180 280 380 480 PRO 3900 Sport,