Since 1990, Cornerstone Valve’s core expertise has been design and manufacturing reliable, custom engineered metal seated, bubble tight leakage, high performance isolation valve solutions up to API 6A – 15000#. We focus on severe service extreme applications in Oil & Gas-Production/Topside/Subsea/Cryogenic, Chemical & Petrochemical, Refining, Power Generation, Mining and minerals, pulp & paper, power generation, US Defence/aerospace and other specialized industries.
Time-lapse video of Pneumatic actuator being assembled on Cornerstone Valve EE3 13-5/8" 10000psi, Bore 11.89" Shutdown Valve, DPE downstream, A182-F53, metal seated, lip seals, 5sec open-close applications, NACE, Firesafe design per API 6FA, Design per API 6A PSL-3 . Proudly engineered and manufactured by Cornerstone Valve (Total quantity shipped 3)