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As safety and environmental issues have become of greater concern to mankind, the need for assured valve shut off providing absolute and verifiable isolation are regularly becoming the standard specification for critical applications. Typical areas of application include offshore and onshore petrochemical production including, gas injection, water injection, oil and gas transmission lines including airport fuelling facilities and other areas where flammable and toxic emissions are unacceptable.
Sizes: ½” – 24”
Class: 150 – 4500
Main Materials: Carbon Steel, Low temperature Carbon Steel , Stainless Steel, Duplex, Super Duplex, Low & High Alloy Steel, Titanium and any other special on request
Alternative customized solutions can be provided including:
Design for cryogenic service /vertical ball check without spring
This single piece construction also provides a rigid assembly when pinned to the disc via means of shaft pins (peened over and locked). This prevents excessive disc deflections, which maintains a constant disc/seal contact stress ensuring a bi-directional sealing valve at both low and high pressures. The valve has a double offset design providing a camming action. This eliminates excessive wear between the seat and disc-sealing interface both during the opening and closing strokes extending the sealing life of the valve. Maintenance of the valve is quick and relatively simple. The PTFE insert, seat gasket and secondary seat can be replaced by simply unbolting the retaining ring and assembling the new parts without removing any other parts. Gland packing is simply adjusted by tightening gland nuts, which are easily accessible between the mounting legs without having to remove the adapter plate or actuator.
Designed for High-pressure low-temperature applications to -320°F