Transcription of Valtek Valtek Mark One Mark One Control Valves
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Valtek Valtek Mark One Mark One Control Valves
Experience In MotionTECHNICAL BULLETINV altek Mark One Control ValvesValtek Mark One Control Valves2 VLENTB0001-04 (AQ) June 2019 Valtek Mark One Control ValvesBody assemblyThe Valtek Mark One globe Control valve offers superior performance in liquid and gaseous services, while also permitting easy, fast and inexpensive spring-cylinder actuated Mark One valve provides stiffness and maintains high positioning accuracy, repeatability, controlled high speed and faithful response. The Mark One valve handles to 150 psig ( barg) supply air and has the thrust to shut off against much higher fluid pressures. The Mark One valve is designed so the spring, supply air pres sure and fluid pressure combine to produce exceptionally tight shutoff. A self-aligning seat ring further enhances the shutoff Mark One valve is typically double top-stem guided and completely avoids contact between the plug and seat retainer.
The bonnet flange incorporates the same separable design as the end flanges and is normally manufactured in carbon steel; however, it can be specified in stainless steel when required. Bonnet flange bolting All sizes use studs and nuts that are furnished in 304 and 316 stainless steel, suitable for -253°C to 816°C (-423°F to 1500°F).
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