Photo 1 of BlueStars G57 Back Up Valve Collar Replacement Part Polaris 180 Models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax Collar Ring - Compatible with G52 Back-Up Valve

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Photo 1 of BlueStars G57 Back Up Valve Collar Replacement Part Polaris 180 Models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax Collar Ring - Compatible with G52 Back-Up ValvePhoto 2 of BlueStars G57 Back Up Valve Collar Replacement Part Polaris 180 Models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280, 280 TankTrax Collar Ring - Compatible with G52 Back-Up Valve