Eliminating gas contamination

After installing O-Seal Valves from CPV Manufacturing Inc., a specialty gases distributor was able to eliminate gas contamination caused by leaky valves. The challenge involved the new helium gas racks being set up by Oxygen Service Company (OSC), of St Paul, Minnesota. They knew that the valves had to assure absolute leak-proof integrity, or there would be major problems. The valves that OSC had previously used had Teflon seals, which are easily damaged by negligent handling. Once damaged, the only way for workers to achieve a leak-proof seal in a valve was to torque it down with a “cheater bar.” Each time the “cheater bar” was used the valve had to be torqued tighter. As one OSC executive said, “Sooner or later a valve that started out round would become egg-shaped.” The company decided to try out O-Seal Valves from CPV because they provide leak-proof protection to 6000psi and have been specifically designed to be opened and closed manually. The first thing they discovered was that they no longer needed to use a “cheater bar.” The precision control of CPV’s O-Seal System valves also made it a lot easier for a filling station to switch from one gas filling operation to another. In addition, the fact that O-Seal Valves are designed for easy “slip-in, slip-out” installation made routine maintenance fast and trouble-free.

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