ARK M400/M500 RC4 2 1/2 - 3" 1st or 2nd Check Rubber Kit

The Ames Colt-Maxim Series Backflow Preventers offers superior flow rate in a light-weight, non-corrosive stainless steel constructed valve. Specifically designed for high flow fire systems. They feature revolutionary Tri-link cam checks and a closure sleeve cover that easily slides for servicing. Maximum Working Pressure 175psi