Cornerstone Valve

“CORNERSTONE” – what does it mean?

The origin of the word dates back to 1250-1300.



There are numerous definitions including “the foundation on which something is constructed or developed….and is essential or basic.”

These things are true about our company, but the reason this company was named ‘CORNERSTONE Valve’ is in stone masonry, the cornerstone is the single most important stone in the construction of any stone building. The entire strength of the building is based upon perfect placement of this one stone which supports the outer walls.

Privately held and growing, Cornerstone Valve is an API 6A & 6D licensed corporation. We are ISO certified with manufacturing headquarters in Houston, TX USA. We specialize in trunnion mounted, floating ball, gate/globe/check, and thru conduit expanding gate valves and provide a variety of severe service valves. Our products are engineered-to-order, with domestic or hand-picked international sourcing options with quality every step of the way. With quick turnaround and competitive pricing, Cornerstone Valve would be proud to earn your business.