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ITT Engineered Valves Fabri-Valve® XS150 High Performance Knife Gate Valve
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ITT Engineered Valves Fabri-Valve® XS150 High Performance Knife Gate Valve


The Fabri-Valve XS150 High Performance Knife Gate valve features a robust perimeter seal that provides bi-directional bubble tight shutoff. The perimeter seal is double-locked in the valve body to securely retain the perimeter seal in the seal groove even during the most demanding applications. The perimeter seal has shoulders, which mechanically retain (lock) the seal in the seal groove. The tab on the perimeter seal acts as the body joint seal and eliminates the possibility of body joint leakage caused by pipe stresses. The tab also helps retain the perimeter seal in the seal groove (secondary lock). The seal groove is specially designed to prevent seal pull-out but also allows the seal to move and prevent over-compression.


Size Range
  • 2” – 24” (DN50 - DN600)
Valve Body Pressure-Temperature Rating
  • 2” – 24” ANSI Class 150 Pressure-Temperature Rating
  • Consult factory for higher-pressure designs.2, 3, 4
  • The table below is the maximum working pressure ratings of the valve body only. The seal ratings determine the practical limitations in actual service conditions.
    Temperature °F (°C) Body Rating – psi (bar)
    Carbon Steel 316 SS
    -20 to 100 (-29 to 38) 285 (19.7) 275 (19.0)
    200 (93) 260 (17.9) 240 (16.5)
    300 (149) 230 (15.8) 215 (14.8)
    400 (204) 200 (13.8) 195 (13.4)
    *Ratings correspond to ASME B16.34-1996
Temperature Rating
  • Viton® Seat -30°F (-34°C) to 350°F (177°C)
  • Aflas® Seat 30°F (-1°C) to 400°F (204°C)
  • EPDM Seat -50°F (-46°C) to 280°F (138°C)
Flange Drilling
  • ANSI 125/150 Drilling Standard.4
  • Contact factory for alternate flange drilling.

    2 Stainless = 275 psi cold working pressure; Carbon Steel = 285 psi cold working pressure
    3 The seal temperature ratings determine the practical temperature limitations.
    4 2”, 3”, 4” XS150’s have flat face flanges. 6” to 24” XS150’s have raised face flanges.


ITT Engineered Valves are essential equipment in industries ranging from mining to biopharmaceuticals, from nuclear operations to oil sands. With experience in valve development, design, manufacturing, installation and automation, product offerings include market-leading industrial knife-gate and hygienic diaphragm valves.


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