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Cornerstone Valve specializes in providing ball and check valves for severe service industries. These include standard engineered product offerings or a one-of-a-kind solution.
Manufactured in Houston, Texas, each valve is tested, fully cycled, leakage verified to applicable industrial API, ISO/ANSI standards and certified to customer requirements. Each valve, along with its components, can be tracked to its source with historical records maintained for a 10-year minimum.
Our industry "signature" standard is the Top Entry Trunnion-Style Ball Valve. The one-piece ball with an integral stem virtually eliminates hysteresis and wear between ball and stem, extending valve life far beyond other multiple-joint valves.
The Cornerstone Top Entry in-line serviceable valves with hub ends make trim change-out or repair a snap - in place, saving downtime and costly replacement.
In short, Cornerstone's valves outperfom in the most extreme industry conditions so your company can too.