Langley (YPS-Langley Valves UK) produces high quality corrosion resistant valves for the oil, chemical and petrochemical industries. They are manufactured strictly in accordance with API600, API603 and API602 specifications. Heaton Valves Africa, as Langley’s sole African agent, has a comprehensive range of stainless steel CF8 and CF8M standard bonnet gate, globe and check valves. Langley also manufactures an extensive range of exotic high nickel alloy gate, globe, swing and dual plate check valves. Grades of material include Duplex, Monel, hastelloy and many more. HVA holds Africa’s widest range of Cast CF8 stainless steel extended bonnet valves for minus 195 °C cryogenic service.