Cornerstone Valve Revenue and Competitors

Cornerstone Valve is a manufacturer of Ball valves, Swing Check valves and Rotary Control valves for vast spectrum of Liquid and High-pressure Gas applications. Our specialty thru the past 30 years of our operation has been in severe service applications employing metal seated bubble tight leakage requirements. We have served Oil & Gas, Petrochemical, Aerospace and Power markets and have a vast installed base world-wide. We started as a supplier to US Navy and have continued to supply to Defense and Aerospace applications. Many of our valves have metal-metal seating, solids proofing and work in challenging applications such as Gas dehydration, sour services, and with loaded fluids. Tagged as “Made in USA” all our raw materials are sourced domestically or from approved sources in Western Europe. We hold API 6D, API 6DSS, API 6A, API Q1 and ISO 9001-2000 certifications. We are 1 of 2 manufacturers in USA having API 6D-SS Monogramms for Subsea Valves. Proudly "Our Valves Work!".