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Masoneilan 80000 Series 3-Way Control Valve

  • Size

    1” through 10” (25 through 250 mm)

    Ratings & 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


    model 87/88 multi-spring diaphragm; model 37/38 spring diaphragm; cylinder


    v-port plug

    Inherent Characteristics



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

    Heavy Guiding

    Construction 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.

    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.

    Reduced 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.

    • Large 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.
Masoneilan 80000 Series 3-Way Control Valve

Masoneilan 80000 Series 3-Way Control Valve

Masoneilan 80000 Series 3-Way Control Valve

Applicable Industries

Power Generation

Key Applications : Reactor Building, Turbine Building, Reactor Facility Grounds & BOP, Heat Recovery Steam Generator.