General description The Replacement G52 Relief Valve is designed for wide compatibility with various Polaris pool cleaner models, including Zodiac Polaris 180, 280, 380, 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, and 280TankTrax. Made from stable and friction-resistant POM, this valve is sturdy and durable, preventing your robot from getting stuck or tangled during operation. Technical specifications Material: Stable and friction-resistant POM Compatibility: Zodiac Polaris 180, 280, 380, 480 PRO, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, and 280TankTrax Operation: Opens every 3 minutes for 30 seconds Suitable for saltwater pools Improved shell material: Crack-resistant polymer blend Installation Ready to install: Simply connect the fittings and hoses firmly to operate. Usage Helps clear the unit from hard-to-reach areas. If the product does not work properly, disassemble the replacement valve to check if it is stuck in the gear. After cleaning and reinstalling it properly, it