Masoneilan 80000 Series 3-Way Control Valve


The 80000 Series is a heavy duty three-way control valve designed for either combining or diverting service. Standard features include:

Heavy Guiding

onstruction of the Masoneilan 80000 Series includes top guiding in the plug, as well as guiding within the seat ring locations providing an extremely well supported and stable design.

High Capacity

Large flow galleries in the 80000 Series provide high capacity designs with low pressure recoveries. High critical flow factors are attained in both combining and diverting configurations.

Flow Stability

The 80000 Series is a dual seated design with flow tending to open the valve at both ports. This provides inherent dynamic stable resulting in excellent throttling control performance.


  • Size: 1” through 10” (25 through 250 mm)
  • Ratings and Connections :
    Flanged: ANSI 150 – 600, UNI-DIN 10 -100
    Threaded: NPT 3/4” through 2” (20 through 50 mm)
    Welded: BW or SW, ANSI 900 - 2500 on request
  • Body Materials :carbon steel; stainless steel; chrome-moly
  • Actuators :model 87/88 multi-spring diaphragm; model 37/38 spring diaphragm; cylinder
  • Trim :v-port plug
  • Inherent Characteristics :linear

Wide Operating Range

Designs are available in various sizes and can be configured to operate within an extremely wide temperature range. This is accomplished through use of high performance materials and design configurations .

WReduced Emissions

The 80000 Series can be supplied with the Masoneilan LE Packing design to provide low emissions performance meeting various environmental regulations worldwide.

NACE Compliance

Construction for Sour Service Applications in accordance with NACE standard MR 0103 is readily available. Applications requiring compliance to MR 0175, 2003 Rev or ISO 15156 can also be provided.

  • arge flow paths offer effective dirty service capabilities and high flow capacities. Heavy valve plug and stem guiding provides dynamic stability resulting in excellent process control and improved process yields.
  • Top and bottom entry access to the valve internal components results in easy in-line access for maintenance and repair.
  • Extremely rugged design for reliable operation in demanding plant environments and process control applications.
  • Applicable Industrie

    Power Generation

    Key Applications :

    Reactor Building, Turbine Building, Reactor Facility Grounds and BOP, Heat Recovery Steam Generator.


    Masoneilan 80000 3-Way Manual (English)

    Manuals 1.69 MB

    Masoneilan 80000 3-Way Valve Tech Spec (English)

    Tech Spec/Fact Sheet English 419.83 KB

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