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  • Fab Valve Sizes

    NPS ½ FP to NPS 8 SP
    ½″ FP to 8″ SP
  • Fab Valve Connections

    150#, 300#, 600#, NPT
    , SW, butt weld, Custom
  • Fab Valve Configurations

    On/Off, Vari-V Control,
    Double Isolation & Bleed
  • Fab Valve Temperatures

    -50°C to 593°C
    -58°F to 1100°F
  • Fab Valve Delivery

    Based on size an
    material availability
  • Fab Valve Quote

    Click here to receive a
    Gosco Fab Valve quote.

Fab Valve Downloads

  • Fab Valve Overview

    Fab Valves

    The Fab Valve proprietary design uses common internals for Class 150, 300 and 600 valves, and utilizes common, non-wetted horseshoe plates for bolting containment. We can modify the valves for any corrosive service by fabricating just 4 wetted components out of exotic alloys such as Hastelloy, Inconel, Duplex, Monel, Alloy 20 etc. We also have specific designs/options for high cycle, abrasive and high temperature applications. Spares are minimized, delivery is fast, and we have the flexibility to completely modify this valve to suit your specific needs.

  • Alloy Options

    Alloy Option

    The unique design of the Fab Valve uses horseshoe body plates for bolting containment that never come in to contact with the process media. All Fab Valves have common, corrosion resistant internal components that are the same for Class 150, 300 and 600 valves. Only four wetted components need to be fabricated out of exotic alloys. This minimizes cost and reduces deliveries. The wetted components can be fabricated out of any commercially available metals.

  • 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. When powder gets trapped in the spring cavity, it causes the valve to “lock up”. To solve this issue, Gosco uses a completely different approach to the competition - instead of trying to seal the spring from the media, we deliberately open up the cavity around the spring. This allows the media to flow around the spring, but also allows it to escape just as easily. Media never gets trapped in the valve, so we never have issues with valves "locking up".

  • Arcuate Cut Ball

    Arcuate Cut Ball

    An arcuate cut is a profile in the ball that reduces velocity as the valve opens and closes. When a standard ball valve is in the first and last ten degrees of opening/closing, velocities are very high (especially in the corners), and erosion occurs. With an arcuate cut, the opening on the ball is almost three times as large. This reduces the velocity by spreading out the flow through a larger opening, which ultimately reduces wear on the ball and seats.

  • Bi-Directional Sealing

    Bi-Directional Sealing

    The Fab Valve design is completely symmetrical, and seals bubble tight in both directions with both a full pressure differential or a 1 PSI differential. Gosco Valves are completely bi-directional so installers do not need to worry about flow direction and/or high pressure sides.

  • Encapsulated “Soft" Seats

    Encapsulated Seats

    The F-Class Valve encapsulated soft seats are used for high cycle, abrasive, high pressure, cryogenic and high temperature applications. Our proprietary live-loaded design allows us to completely encapsulate the "Soft" insert on all four sides, leaving only a small section of the "Soft" material exposed for sealing. The “soft” inserts are held in place by “barbs” on the metal inner and outer carrier, to prevent cold flow. The assembly is then compressed to 3-4 times the maximum pressure rating of the valve so that the insert takes a compression set. Afterwards, the seat profile is machined and match lapped to the ball. For abrasive applications, it can be used with a boronized, arcuate cut ball.

  • Fast Track

    Fast Track

    What good is an elite custom ball valve if it can’t be delivered when you need it? Fast Track is our expedited delivery service, designed to help you meet near-impossible deadlines. The fee is calculated based on accelerated engineering & design, supplier expedite charges, air freight charges, extra manpower, and other associated costs. What does this buy you? The world’s best valve and a solid guarantee: If we don't deliver on time, we waive all Fast Track fees.

Fab Valve Configurations