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About CPV

CPV was founded is 1915 by Isaiah Engle when he opened a machine repair shop in Philadelphia. Soon after, he began making pump valves for large steam operating reciprocating pumps. To fix the problem of leakage, Isaiah designed a revolutionary soft seat that increased operating efficiency and durability.

In the 1940s, CPV developed a line of check valves, which effectively protected centrifugal pumps by encasing the pump valve concept into a housing. The highly reliable Silent Check Valve protects the pumps from the destructive surge caused by reverse flow and eliminates the problem of water hammer. Today, these valves could be in use wherever there’s a pipeline and they can be found in high rise structures such as the Space Needle in Seattle and the CN Tower in Toronto.

In the 1950s CPV designed and manufactured the couplings used on the US Navy catapults that launch aircraft at sea. To meet US Navy requirements, CPV designed a specialised test stand utilising O-rings to enable quick assembly and disassembly. This lead to the development of O-SEAL fittings employing a recessed O-ring to seal the mating flat faces. The Navy and other industrial customers seeking leakproof and reliable connections, continue to benefit from this innovation.

Since the 1950's, CPV engineers have continued to develop revolutionary valve designs including a better globe valve for pressures to 6,000 psi using the O-SEAL end connections which permits "slip in - slip out" speed, flexibility and efficiency. This system can withstand heavy vibration or pressure surges far better than gaskets or metal-to-metal seals. CPV was the first to design the O-SEAL system concept and it has grown into their market and has maintained the compatibility of these components for more than forty years.

Today CPV is known around the world for the O-SEAL System of high-pressure valves and fittings, the Mark VIII system of tube size valves and fittings and FloMaster™ air operated shutoff valves. The new G-Series of stainless steel shutoff, needle & check valves will join that list as they feature the same ease of fitting, quality control and trouble free service.

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