Hypertherm - Cut with Confidence

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  1. Always make sure all high-pressure water has been removed from the valve by following the machine manufacturers' safety instructions. Failure to do so can cause severe injury or death.
    • Always make sure all high-pressure water has been removed from the valve by following the machine manufacturers' safety instructions. Failure to do so can cause severe injury or death.

    • Turn OFF all water pressure to the on/off valve.

    • Turn the on/off valve ON to raise the valve stem (13688, included in kit) from the seat.

  2. The valve components can be replaced with the  valve body mounted to the table.
    • Disconnect the air line from the actuator.

    • Unthread the actuator from the valve body.

    • Remove all the valve components from the valve body with the included dowel.

    • Thoroughly clean the interior of the valve body with isopropyl alcohol or a similar cleaning agent before replacing the components.

    • Visually inspect the top and bottom of the valve bore for cracks/blemishes. If excessive wear or cracks are visible, replace the valve body.

    • Slide the O-ring on to the point of the valve stem.

    • Slide hoop and the high-pressure valve seal onto the valve stem with the hoop towards the brass back-up ring.

    • Apply high-pressure lubricant to the outside diameter of the high-pressure valve seal.

    • Put the point of the valve stem into the valve body.

    • Push the valve stem with the dowel until it bottoms out.

    • Apply Blue Goop to the actuator threads.

    • Thread (hand tighten) the actuator into the top of the valve body until it bottoms out.

    • Reconnect the air line to the top of the actuator.

    • Turn the air to the actuator ON at the controls.

    • Apply Blue Goop to all surfaces of the seat.

    • Put the seat into the bottom of the valve body.

    • Clean the valve nut threads and the top of the nozzle tube of all Blue Goop.

    • Reapply Blue Goop to the threads of the high-pressure gland fitting and to the top of the nozzle tube.

    • Thread the high-pressure gland fitting into the bottom of the valve body.

    • Tighten the high-pressure gland fitting using a 1-1/4" wrench.

    • Turn the air to the actuator OFF at the controls.

    • Apply water pressure to the valve assembly to verify there are no leaks.

    • Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head.

    • Re-install the cutting head and continue the cutting process.

Finish Line

One other person completed this guide.

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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