Since 1990, Cornerstone Valve’s core expertise has been designed and manufactured 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, nuclear, pulp & paper, power generation, US Defense/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.