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Mark One Three-Way

Linear Globe/Angle Control Valves - Mark One™ Three-Way

BRAND: Valtek

A three-way version of the Mark One, this valve is used for combining or diverting service. Like the Mark One, it offers superior performance in liquid and gaseous services in simple, rugged design.


  • Power
  • Oil & Gas
  • Chemical
  • Water
  • General Industry

industry sectors

  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power
  • Biomass and MSW
  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Basic
  • Specialty
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Other Industries

IS0 9001:2008
PED Directive 97/23/EC
ATEX QAN Quality Registration
IECEX QAR Quality Registration
SIL Certification
CRN Certification (Canadian Registration)
EMC Directive 2004/108/EC
ATEX Directive 94/9/EC
CE Mark
SSOV (FM Safety Shut-off Valve Fuel Service
API 607 Fire Safe

Electronic Certifications for Logix Positioners mounted on Mark series valves

Design and Material Standards for Mark series valves
ASTM B16.5
ASTM B16.9
ASTM B16.10
ASTM B16.11
ASTM B16.25
ASTM B16.34
ASTM A (material)
ASTM SA (material)

Operating Parameters

-196°C to 400°C
(-320°F to 752°F)

Design Range

Size Range: DN 15 to 300; NPS 1/2 to 12

Pressure Class Range: PN 10 to 400; Class 150 to 2500

Features & Benefits

• Reliable, predictable performance provided by the position accuracy, repeatability and assured response of the stiff and high-thrust, spring-cylinder actuator
• Enhanced process control due to exceptionally tight shutoff
• Reduced inventory carrying costs owing to a high degree of interchangeability with Mark One Series valves
• Fast, easy and inexpensive maintenance facilitated by compact, lightweight body and actuator package plus clamped-in seat and top-entry trim


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