2 new 9-100-9002 pressure relief valves as replacement Fits Polaris 180, 280 and 380 automatic pool cleaners Quick disconnect Easy to install: unscrew the old part and screw in the new part. These parts are made of robust and wear-resistant ABS plastic and are thoroughly tested by the manufacturer, which guarantees high durability and a long service life. Product description 9-100-9002 pressure relief valve as replacement