2 New Replacement 9-100-9002 Pressure Relief Valve Assembly Works for 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 from sturdy, wear-resistant plastic Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.