The Standard Repair Kit is compatible with the 2-1/2”-4” Model 350A, 375, and 475, and the 4” Model 350 and 450 Backflow Preventer. Repair Kit components conveniently include two Check O-Rings, eight Poppet Bolt O-Rings, and two Seal Rings. Repair Kits are sold as accessories for quick and simple repair needs, providing long-lasting protection from both backsiphonage and backpressure of polluted water into the potable water supply.

• Fits 4" Model 350/450
• Fits 2-1/2" - 4" Model 350A
• Rubber and Checks Rubber Only Repair Kit
• Packaged in poly bag for compact shipping
• Includes No. 1 and No. 2 check seal rings, O-rings, and lubricant
• Accessories allow for speedy repairs
• Repair Kits provide cost savings by avoiding full replacement
• Complies with ASSE® Listed 1015 and CSA® Classified B64.5
• Quality materials designed for long-lasting parts replacement
• 1-year limited warranty