Slurry Valves

CASL’s TSI Thermal Spray Industries (“TSI”) division specializes in remanufacturing large diameter severe service knife gate valves utilized in oilsands, mining, petrochemical, power, forestry and general industrial applications. TSI’s comprehensive remanufacturing service returns valves to a like new condition at a fraction of the new replacement price. For particularly severe applications where extending service life is the priority, such as oilsands underflow piping, TSI’s proprietary eutectic tungsten carbide coatings are proven to consistently deliver industry leading mean time between outage results.



TSI’s comprehensive remanufacturing process includes:

  • Complete valve disassembly, inspection and rebuild
  • Valve body weld build-up and machining
  • Gate weld repair and hardfacing
  • Inspection and testing of all welds
  • Hydraulic cylinders remanufactured to as new condition
  • Tungsten carbide coating applied to wear liners


TSI remanufactures all makes, sizes and configurations of severe service knife gate valves up to 36” ID with application of tungsten carbide coatings from 2mm to 25mm.

Features and Benefits

Only the spray & fuse process retains eutectic tungsten carbide properties

Benefit: Eutectic tungsten carbide is measurably superior to other coatings in impact and wear resistance and provides maximum service life

Spray and fuse process attains diffusion bond without creating brittle phases

Benefit: Minimizes spalling and prolongs valve service life

In house metallurgist to customize alloy blends

Benefit: Optimize performance at desired price point

Coating selection and application process managed in-house

Benefit: Faster turnaround, avoids third party mark-ups and ensures achievement of quality objectives

ISO and ABSA certified manufacturing process

Benefit: Third party validation that manufacturing process delivers promised results

Services and Technologies

Learn about CASL’s service and technology offerings. Our industry solutions provide the best in class services to meet the demands of your business.

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    Weld Overlay

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    Thermal Spray

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  • component-01

    Component Remanufacturing

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    HaloJet ID HVOFTM System

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    Overlaid Spools

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    Field Service

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    Machining & Finishing

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    Research & Development

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    Coating Materials