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  • Block & Bleed Sizes

    NPS ½ FP to NPS 8 SP
    ½″ FP to 8″ SP
  • Block & Bleed Connections

    150#, 300#, 600#,
    NPT, SW, butt weld
  • Block & Bleed Configurations

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

    -50°C to 593°C
    -58°F to 1100°F
  • Block & Bleed Delivery

    Based on size and material availability
  • Block & Bleed Quote

    Click here to receive a
    Fab Valve Block & Bleed quote.

Fab Valve Downloads

  • Fab Valve Block & Bleed Valve Overview

    M-Class Block & Bleed Valves

    The Gosco Block and Bleed Valve stands on top of its class by providing the unique components featured in a standard Fab Valve, combined with cutting edge live-loaded seat technology. Gosco Valves' extended bonnet, Fab Valve sealing system, Clearview mounting pad, soft seats and exotic alloy options make these block and bleed valves extremely versatile, enabling them to tackle the toughest severe service applications.

  • Configurations

    Configurations

    A single block and bleed configuration is used when the operator wants to check the integrity of the seats in a valve. With the valve in the closed position, you can pressurize each end and open up the bleed valve to see if the seats are working properly. A double block and bleed with an integral body (one valve, two balls, four seats and a bleed valve) is used for applications where there is limited space, requiring a double block and bleed valve with reduced dimensions.

  • 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".

  • Exotic Alloys

    Exotic Alloys

    If you can cast it, or it is available in bar stock, Gosco can make it in to an Fab Valve Block & Bleed valve, even with metals that require vacuum casting (like titanium). We are not restricted to making merely the body from exotic alloys, as we can create all components to suit your needs, right down to the bolting. Our engineering team at Gosco Valves have extensive experience in corrosive applications, and we can recommend the best material to use for your specific application.

  • 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.

  • 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