- Pressure Relief (Upper Poppet) To Prevent Pressure Build-Up
- Both Poppet and Seats Are Completely Independent of the Shear Section, So When Sheared the Valve Assures a 100% Liquid Tight Seal
- The Single Link Design Provides Ease of Operation and Reduced Maintenance
- An Air Test Port Allows Line Testing Without Breaking the Integrity of the Line
- Raised Bosses Provide Secure Anchoring
- Optional Model 522DP With 2″ External Male Threads for Easy Connection to Secondary Containment Piping








