The Fabri-Valve XS150-ULV Urethane Lined Knife Gate Valve provides an economical solution for abrasive and corrosive applications. The XS150-ULV does not discharge process media to the environment. The design utilizes the same superior sealing techniques as the XS150, featuring a robust perimeter seal that provides bi-directional, bubble-tight shutoff. Replaceable FV8000™ urethane liners are added to protect the body from abrasion and corrosion.

The XS150 body halves are machined to accept the removable urethane liners (full port). A triple scraper design is incorporated into the FV8000 liners, which cleans the gate during operation and prevents media build up in chest area. The perimeter seal has shoulders, which mechanically retain (lock) the seal in the seal groove located in the FV8000 liners. The seal groove is specially designed to prevent seal pull-out but also allows the seal to move and prevent overcompression.
Unit of Measure


N/A Size Range
2" – 24"
Pressure Rating
150 psi (10.3 bar) CWP (cold working pressure)
Temperature Rating
170°F (77°C) Standard
Higher temperatures available upon request.
Flange Drilling
ANSI 125/150 Drilling Standard.


N/A Every Fabri-Valve XS150-ULV valve is fully tested prior to shipment. Testing includes a body shell test, a seat test and a cycling test to insure proper functioning of moving parts. Additional testing is also available. Please let us know your requirements.
Standard Shell test:

  • Hydro test at 1.5 times the rated CWP (cold working pressure) - Zero allowable leakage
    Standard Resilient Seat test:
  • Hydro test at 15 psi (1 bar) and rated CWP - Zero allowable leakage

  • Shutoff Performance

    N/A Zero leakage.for all sizes.
    ANSI/FCI 70-2 establishes a series of six leakage classes for control valves and defines the test procedure. Class VI allows the least leakage. XS150-ULV’s are bubble tight, which exceeds Class VI requirements.

    Flow Coefficients

    N/A The Cv values below represent U.S. gallons per minute 60°F water through a 100% open valve at a pressure drop of 1 psi. The metric equivalent, Kv, is the flow of water at +16°C through the valve in cubic meters per hour at a pressure drop of 1 kg/cm2. To convert Cv to Kv, multiply the Cv by 0.8569.


    N/A FV8000 Liner & Seat are Independent:

  • Liner and slightly recessed seat work in harmony providing body protection and bubble-tight, bi-directional shutoff in abrasive and/or corrosive applications.
  • Liner protects the perimeter seal from the abrasion of direct process flow.
  • Liner material is harder for superior abrasion resistance since it is not used for sealing.
  • Triple scraper design is incorporated into liners which cleans gate during operation and prevents media build-up in chest area.

    Ease of Maintenance:
  • Injectable packing allows easy packing adjustments to be made under line pressure without valve disassembly or removal of the valve from the pipeline.1
  • One-piece perimeter and chest seal design allows for quick and easy maintenance.
  • Liners are easily replaced.

    One-Piece Perimeter & Chest Seal:
  • Bi-directional, repeatable shutoff.
  • Zero Discharge. Zero leakage.
  • Perimeter Seal:
    1. The perimeter seal has shoulders, which mechanically retain (lock) the seal in the seal groove even during the most demanding applications.
    2. The seal grove is specially designed to prevent seal pull-out but also allows the seal to move and prevent overcompression.
  • Shut-off performance is unaffected by differential pressure. Excellent bi-directional shut-off even at very low pressures.
  • Chest seal wraps around the entire gate eliminating leakage paths.
  • Chest seal completely encloses injectable packing; therefore, contamination of the process fluid by “loose” packing is eliminated.

  • Standard MSS-SP81 Face-to-Face.
  • Robust gate resists distortion due to effects of water hammer.
  • A taper is added to the liner’s internal diameter to eliminate the possibility of material collecting at the bottom of the port and preventing proper closure. The taper ensures automatic "clean-out" and "flushing".
  • Minimized chest area and close tolerances prevents media packing.
  • Flange O-rings seal against mating flange and prevent overcompression of the FV8000 urethane liners. No gaskets are required.
  • Unrestricted straight-through flow design provides true full-port design.
  • Non-Rising stem design minimizes space required for installation.2
  • Universal yoke allows easy conversion between handwheel and cylinder operated.
  • Dished handwheel keeps hands away from pinch points while operating.

  • Available Options


  • Duplex Stainless Steel Gates
  • Hardened Gate Material
  • Hard Chromed Gate
  • Nickel-TFE Coated Gate
  • Epoxy Coating
  • Locking Devices
  • Alternate Flange Drilling
  • Bevel Gear
  • Chainwheels
  • Cylinder Actuators
  • Electric Actuators
  • Ratchet
  • Extended Stems
  • Rod Boots
  • Limit Switches
  • Positioner
  • Solenoids