Valtek Mark One Control Valve

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  • States: NC, SC, VA
  • Summary: Valtek Mark One covers a wide range of applications in a single valve platform
  • Details
  • Videos
  • Industry / Applications

Valtek Valve Product Selection

Founded in 1965, Valtek valves are known for reliability, long life, parts interchangeability, ease of maintenance and prompt delivery.

Key Features & Benefits:

  • Globe or Angle Design
  • Heavy Top Guiding
  • Severe Service Trim Available
  • Noise Reduction Trim
  • Anti-Cavitation Trim
  • VL Series Actuator
  • Field Reverable
  • Double Acting
  • Spring Return

Valtek Mark One Keeps It Simple

  • No special tools required
  • No close tolerance between the cage & plug
  • Seat ring is clamped into place 
  • Valtek Mark One covers a wide range of applications in a single valve platform.
  • Simplified spares w/ increased interchangeability
  • Simplified maintenance
  • Compact, field reversible actuator
  • State of the art digital positioner offerings

Speed is essential during routine maintenance and emergency repairs.  The Valtek Mark One Control Valve Quick-Ship Program sends quality, Flowserve-tested Mark One valves anywhere in North America in one week or less.  Often times a valve can be delivered within 24-48 hours.  The standard industry lead times for valves can range from 4 to 12 weeks.  Reduce maintenance-related downtime, receive high-quality control valves, and experience superior performance with the Valtek Mark One Control Valve.  


  • Body style: globe
  • Temperatures: -30°C to 400°C (-20°F to 750°F)
  • NPS sizes: 0.5 to 6
  • Pressure classes: 150 to 600
  • Body materials: WCC (carbon steel) and CF8M (316 SS)
  • Body bolting: A193-B7; nuts: A194-2H; zinc plate (or 304 SS,
  • studs: A193-B8; nuts: A194-8)
  • End flanges: integral or separable, 125 RMS raised face flange
  • Plug and seat: 316 SS, Alloy 6 overlay and 416 SS
  • Trims: full area and reduced
  • Bonnet: standard
  • Gaskets: PTFE, spiral graphite
  • Packing: PTFE V-ring, square graphite, SafeGuard™ Live Loaded, SureGuard™, SureGuard XT™
  • Actuator: VL series (aluminum — Buna-N and Viton® O-rings)
  • Handwheel: side-mounted and limit stop (25 and 50 VL)
  • Positioners: Logix 3800
  • Accessories: air filter, air filter regulator, coalescingair filter regulator (Valtek or selected boosters)

Watch Flowserve videos for product info, how-tos and repair info.

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