337 Highlandia Drive Baton Rouge, LA 70810 1.800.299.4142 [email protected]


Mark One

SKU: 4054 Categories: , Tags: ,


The Valtek Mark One globe control valve offers superior performance in liquid and gaseous services, while also permitting easy, fast and inexpensive maintenance. The spring-cylinder actuated Mark One valve provides stiffness and maintains high positioning accuracy, repeatability, controlled high speed, and faithful response. The valve is designed so the spring, supply air pressure and fluid pressure combine to produce exceptionally tight shutoff. A self-aligning seat ring further enhances the shutoff capability. Industries the Mark One can assist are chemicals, water, oil & gas and power.


  • Small, compact, lightweight body and actuator package
  • Stiff and high-thrust cylinder actuator offers position accuracy, repeatability, and assured response
  • Broad solutions envelope with significant flexibility

Advantages and Features:

Design lower total lifetime cost

• High interchangeability between sizes and other Valtek control products

• Valve design minimizes requirements for stocking spare parts

• Rugged, heavy-duty parts provide extended life

• Actuator design allows simple, easy maintenance


• Globe, angle, three-way and jacket styles offer multiple face-to-face standards

Trim that does not stick or gall

• Double-stem guiding located out of flow stream

• Generous clearance between plughead and seat retainer

• Eliminates galling associated with cage-guiding

Easy, fast and inexpensive

• Top-entry servicing

• Clamped-in seat ring

• Evenly compressed gasket — controlled gasket compression

• Separable flanges

• High degree of parts interchangeability

• Small, lightweight design

Leakproof when closed

• Self-aligning seat ring

• Assisted shutoff from fluid pressure, cylinder spring, cylinder pressure

• High-thrust, spring-cylinder actuator

• Spring fails valve to desired position, pneumatics provide additional force

Built for toughest service

• Corrosion-resistant construction

• High thrust overcomes high pressures

• Anti-cavitation and noise-trim options

• Heavy-duty plug stem

• Factory Mutual approved as a fuel service valve (0.75–3 in/DN 20–80)

Compact and easy to install

• Cylinder actuator smaller than most competitor actuators

• Lower center of gravity than comparable actuators

• Lighter weight means less pipe stress from static and dynamic loads

• Separable end flanges allow the valve to be installed in many orientations and compensate for flange misalignment

Reliable, predictable service

• Stiff, high-thrust cylinder actuator

• Accurate positioning

• High repeatability

• Faithful response

• Controlled, high-speed stroking action


Additional information


Chemical, Engineering, Food & Beverage, Oil & Gas, Pharmaceutical, Power Generation, Pulp & Paper, Refining, Water & Wastewater