True Seal Check Modules

The first check valve in the Deringer 40/50 (RP & RPDA) products can be reconfigured to operate exactly like a traditional poppet. It was designed this way because the first check valve in an RP or RPDA backflow prevention valve provides the best flow performance when it operates like a traditional poppet style check valve. So not only are our check modules Dual-Action they are Dual Purpose. The True Seal Check Valve was designed to incorporate a poppet only motion during the check stroke and is used exclusively on the first check assembly on the Deringer RP and RPDA models. This design allows a more consistent pressure loss across the check valve which helps maintain a steady and continual closure of the Relief Valve. Light weight engineered polymer components Modular for easy removal of complete check from body Easily disconnect spring tension for safe check servicing Replaceable Silicone Rubber Elastomer Disk Excellent resistance to fouling.

This gif demonstrates the actuation of the first check valve in the Deringer 40/50 (RP & RPDA). Same components as the Dual-Action checks reconfigured to provide the best performance for an RP or RPDA. Features: 100% of check stroke is that of a poppet check Consistent static sealing Excellent resistant to fouling Reliable check closure Stable flow characteristics at ALL flow rates