oliver valvetek offers a comprehensive range of engineered-to-precision subsea manually actuated multi turn gate valves. available in two different bore sizes – 3/4″ and 1 inch, they are suitable for up to 10,000 ft [3,050m] of water depths and a cold working pressure rating up to 15,000 psi.
our multi turn manual gate valves have a qualified working temperature of classifications p-x (-20°f/-29°c to 302°f/150°c).
our multi turn manual gate valves offer a good alternative to the half turn manual gate valve. the multi turn design has a positive back stop and an integral safety feature of having an external failure point external of the pressure envelope if the drive train is compromised.
all our manually actuated subsea gate valves provide the end-user with low flow restrictions and metal-to-metal seat sealing isolation. we also utilise tungsten carbide (hvof) hard facing technology which ensures that the sealing is gas-tight (meeting with api6a psl3g). this offers long term reliability for applications such as mixed well bore produced fluids and chemical injection on subsea christmas trees and manifold structures. valves are typically supplied in corrosion resistant alloys such as inconel 625 and 25cr super duplex stainless steel.
we also perform qualification testing to the exacting standards of api 6a appendix f pr2 and 17d 2nd ed and supported by third party independent review and endorsement.
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