Wilkins 1 in. Double Check Backflow Preventer 1-350FT - The Home Depot

The 1 in. 350FT Double Check Valve Assembly with integral male 45° flare SAE test fitting is used in low health hazard, non-potable water applications for protection against both backsiphonage and backpressure

Wilkins 1-1/2 in. 950XL3 Double Check Backflow Preventer with Integral Male Flare SAE Test Fittings 112-950XL3FT - The Home Depot

Wilkins 3/4 in. 375 Reduced Pressure Principle Backflow Preventer 34-375 - The Home Depot

Zurn-Wilkins - The Home Depot

Wilkins 3/4 in. 375 Reduced Pressure Principle Backflow Preventer 34-375 - The Home Depot

Zurn Wilkins 1-350 1 350 Double Check Backflow Preventer: Household Rough Plumbing Valves: : Industrial & Scientific

Wilkins 2 in. 350XL Double Check Backflow Preventer Valve 2-350XL - The Home Depot

Wilkins 1 in. 350 Double Check Backflow Preventer 1-350 - The Home Depot

Wilkins 1 in. Reduced Pressure Principle Backflow Preventer 1-375XLFT - The Home Depot

Wilkins 1-1/4 in. Dia Bronze Double Check Backflow Preventer 114-950XLT2 - The Home Depot