Disconnect Kit: D29 Universal Quick Disconnect Wall Adapter Compatible with Polaris 180, 280, 380, 480 Pro, 3900 Sport Pool Cleaners. 9-100-9002 Pressure Regulator Valve: compatible with Polaris models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax pool cleaners. High Quality These parts are made of tough, wear-resistant ABS plastic and well tested by the manufacturer which guarantees high durability and long life. Great function: 9-100-9002 Pressure relief valve: when the pressure inside the line exceeds the tension of the spring , the spring opens and relieves excess pressure. Screwing in completely can provide the maximum amount of pressure and speed; D29: It is the main body of the wall adjuster that does a rotation lock on the pool wall. It is not made or sold by Polaris but has the same performance as the original. If you are not one of our products, you can request one or a . Legal Disclaimer: name and model name are for cross-reference only. All brands, trademarks and model numbers remain the property of their respective owners. Note: Due to the light and screen differences, the color shown may be slightly different from the actual object. The allowable measurement error is + - 1-3 cm.