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  • Vari-V Sizes

    NPS ½ FP to NPS 8 SP
    ½″ FP to 8″ SP
  • Vari-V Connections

    150#, 300#, 600#,
    NPT, SW, butt weld
  • Vari-V Configurations

    On/Off, Vari-V Control,
    Double Isolation and Bleed
  • Vari-V Temperatures

    -50°C to 593°C
    -58°F to 1100°F
  • Vari-V Delivery

    Based on size and material availability
  • Vari-V Quote

    Click here to receive a
    Fab Valve Vari-V Valve quote.

Fab Valve Vari-V Downloads

  • Fab Valve Vari-V Control Overview

    Vari-V Control Valves

    When you require precise control of flow, pressure or temperature, the Fab Valve Vari-V Control Valve provides exactly what you need. Standard 10°, 30°, 60°, 90° V's are cut into the ball to handle the majority of control requirements. Custom profile V's are used for unusual applications requiring special flow characteristics.

    Vari-V Valve
  • Standard V-Balls

    V-Balls

    At the heart of every M-Class metal seated control valve lies the Vari-V ball. The profile of the V-ball determines the flow characteristic of the valve and can be interchanged to suit the application. 10°, 30°, 60° and 90° V-balls are most common, but other profiles are readily available, including the Linear-V, Filler-V and High Turndown-V. The transition between high flow and fine control with the Vari-V is extremely smooth. Custom V ball options are also available.

  • Custom V-Balls

    Custom V-Balls

    Custom V balls are available for applications that possess specific flow requirements which cannot be met using a standard V-ball. With the aid of Computational Fluid Dynamics (CFD), we can create a V-ball with a specific profile to fit any application. Anti-cavitation trim is also available. For further information on custom V-ball applications, including videos and specifications, please contact Gosco Valves.

  • CFD/FEA

    CFD/FEA

    Computational Fluid Dynamics (CFD) determines areas of high velocity/flow in a valve, and assist in trim engineering for applications where velocities need to be controlled. It also determines the flow coefficient (Cv) of Gosco Vari-V balls and aids in designing them to custom specifications.

  • Superior Trim Hardening

    Superior Trim Hardening

    BORONIZING is a thermo-chemical surface hardening process that creates a surface layer that’s so hard, it can’t be measured on the Rockwell C Scale. We use Inconel 718 because it is the best overall metal for corrosion, high temperature, and wear resistance. Our PROPRIETARY BORONIZING has a layer depth over 100 microns (0.004”) and a hardness between HV 2500-2700.

    Compared to HVOF coatings, BORONIZING is:
    Substantially harder, markedly more wear resistant, impervious to corrosion, and is capable of handling huge temperature shocks without spalling or flaking.

  • Seat/Spring Design

    Seat/Spring Design

    Gosco's patented seat/spring design is perfect for powder/catalyst applications to prevent build up of powder behind the seats. The spring pushes against the seat while simultaneously sealing against the body so media can not get behind it. Media never gets trapped between the seat and body or between the spring and the seat.

  • Dual Shaft Packing

    Dual Shaft Packing

    Gosco Fab valves have a live loaded upper packing set, Smartpak lower packing, and upper & lower shaft guides to support the shaft and prevent side-loading. The Gosco shaft sealing system is the best in the world and exceeds all fugitive emission standards.

Fab Valve Configurations