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Valtek Mark One Linear Contrl Valve

Valtek Mark One Linear Control Valve

The Valtek Mark One globe control valve offers superior performance in liquid and gaseous services, while also permitting easy, fast and inexpensive maintenance.

Flowserve, Valtek, Valtek EMA
CO2 Injection, Condensate, High Temperature Service, Hydrocarbon Processing, Cryogenic Service, Petroleum Production and Refining, Chemical Processing, Corrosive Services, Water, Petrochemical Processing
Nuclear Power, Chemical Processing, Oil and Gas, Slurry Processing, Gas-to-Liquids, LNG, OEM, Power Generation
ISO 9001:2000, ISO, AMSE (ANSI), Nuclear

The Valtek Mark One control valve is a broad range control valve including globe, angle and 3-way body types.  It is designed to handle a wide selection of process control applications for flow, pressure and temperature including corrosive fluids, cryogenic, steam, water, gases, multi-phase, high temperatures, erosion and high pressure drops.  The Mark One ranges in sizes from ½” to 36” and in pressure classes from class 150 to 4500 and is used for either throttling or on-off control.

The spring-cylinder actuated Mark One valve provides stiffness and maintains high positioning accuracy, repeatability, controlled high speed, and faithful response. The Mark One valve pneumatic actuator handles up to 150 psig (10.3 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 pressure and fluid pressure itself combine to produce exceptionally tight shutoff. A self-aligning seat ring further enhances the shutoff capability of the Mark One valve.

The Mark One valve is typically double top-stem guided and completely avoids contact between the plug and seat retainer. Many globe valve maintenance problems can be traced to cage-guiding. The close metal-to-metal contact between the cage and plug often results in galling and sticking.

The clamped-in seat and top-entry trim permits easy, quick maintenance. Plus, with the Mark One valve’s high degree of parts interchangeability, fewer inventory parts are required. In addition, the actuator is lighter, smaller and easier to handle than comparable diaphragm actuators.

The Valtek Mark One control valve is the industry choice for a simple, reliable, tough globe valve.

Features and Benefits: 

  • High interchangeability between sizes and other Valtek products
  • Globe, angle, three-way, and steam-jacket body styles
  • Double-stem guiding located outside the flow stream
  • Top-entry servicing
  • Clamped-in, self-aligning seat ring for easy removal
  • Small, compact, light-weight body and actuator package
  • Stiff and high-thrust cylinder actuator
  • Anti-cavitation and noise abatement trim
  • Accurate positioning and high repeatability coupled with faithful response