Self-Operated, High Flow

The Mark 801/802 Series is completely self-operated and requires no external power source or other expensive instrumentation to operate the valve. The Mark 801/802 Series are high-flow versions of our Mark 80 Series temperature regulators. Available with up to 100 feet (30 meters) in capillaries.

Features & Benefits
  • Sliding gate seats provide:
    – Straight-through flow for reduced turbulence and quiet operation
    – Short stroke for fast response and accurate temperature control
    – Easily interchangeable Cv’s
    – Tight shutoff due to overlap of seat closure area
  • Available with capillaries up to 100 feet (30 meters) in length

Sizes: 1/2″ – 2″ (DN15 – DN50)

Body Material: Ductile Iron, Bronze, Carbon Steel, Stainless Steel

End Connection: Threaded, Flanged, Socket Weld, Butt-Weld

Cv (Kv): up to 70 (up to 60)

Seat Material: Jorcote

Control Range: -20°F (-29°C) to 325°F (163°C)


Benefits of the Sliding Gate

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

Sliding Gate Videos

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

Understanding Temperature Regulators

Mechanical temperature regulators are often overlooked as a simple solution for temperature control.

  • EC Declaration of Conformity/PED:
    Mark 801
  • CRN Number
    Mark 801: 1/2″ – 2″
    Mark 802: 1-1/2″ – 2″
  • ATEX Certified

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Related Products

Mark 80 Series

Self-Operated, No External Power Source

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