Boiler Feedwater

The Mark 33 is a motor-operated valve featuring the Jordan sliding gate seat and heavy-duty industrial motors for proportional (resistance), on-off, 4-20 mA electronic control. Models include the Mark 33 in sizes 1/4" through 2" (DN8 through DN50), the high flow Mark 331/332 with Cv's up to 70 (60,34 Kv) and the Mark 39 with three-way body.

Features & Benefits
  • Heavy duty industrial grade motor – die cast magnesium housing, NEMA 3 (weather protection) rated, UL® listed and CSA approved
  • Oil-immersed motor and gear train for long-term, reliable performance
  • Sliding gate seats provide straight-through flow for reduced turbulence and quiet operation
  • Short stroke for fast response and accurate regulation
  • Easily interchangeable Cvs
  • Tight shutoff
Specifications
  • Sizes: 1/4″ – 2″ (DN8 – DN50)
  • Body Material: Carbon Steel, Stainless Steel, Ductile Iron, Bronze
  • End Connection: Threaded, Flanged, Socket Weld, Butt-Weld
  • Cv (Kv): up to 395 (up to 340)
  • Set Material: Jorcote
  • Command Signals: Current or voltage command, on/off

 

Resources

Sliding Gate Videos

Learn more about the sliding gate seat design by watching these videos.

Benefits of the Sliding Gate

Read on to learn the benefits of owning sliding gate regulators and control valves.

Sliding Gate Valve Overview

Watch this video for an overview of Sliding Gate Pressure Regulators and Control Valves

Approvals
  • EC Declaration of Conformity/PED:
    Mark 33: 1-1/4″ – 2″
    Mark 331/332: 1-1/2″ -2″
    Mark 37: 1-1/4″ – 6″
    Mark 377: 1-1/4″ – 2″
  • CRN (Canadian Registration Number)
    Mark 33: 1-1/4″ – 2″
    Mark 331/332: 1-1/2″ -2″
    Mark 37: 1-1/4″ – 6″
    Mark 377: 1-1/4″ – 2″
Jordan Valve Express

This control valve is available to ship the next business day (order must be entered by 2:00p EST)

  • Mark 33
  • 1/2″ – 2″ only
  • 24 VAC, FNPT only

Exclusions may apply.

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