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 poppet stem from the poppet seat.

  2. The valve kit components can be replaced with the   valve body in the mounting collar.
    • The valve kit components can be replaced with the valve body in the mounting collar.

    • Unthread the nozzle tube from the valve body using 3/4" and 7/8" wrench.

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

    • Disconnect the air tube from the actuator.

    • Unthread the actuator from the valve body using 1-1/8" wrench.

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

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

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

    • With the O-ring towards the point of the needle, slide the high-pressure valve seal on to the poppet stem.

    • Apply a high-pressure lubricant or similar (11136) to the outside diameter of the high-pressure valve seal.

    • Slide the back-up ring on to the poppet stem behind the high-pressure valve seal.

    • Put the poppet stem, with the point down, at the top of the valve body.

    • Use the dowel to push the poppet stem down until the back-up ring is flush with the top of the bore.

    • Apply Blue Goop to the top threads of the valve body.

    • Apply Blue Goop to all surfaces of the poppet seat.

    • Put the poppet seat at the bottom of the valve body.

    • Put the O-ring behind the poppet seat so it is held in place.

    • Thread (hand tighten) the actuator on top of the valve body.

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

    • Turn the air to the actuator ON to relieve the pressure from the poppet stem.

    • Thoroughly clean the nozzle tube of all the Blue Goop.

    • Reapply Blue Goop to the top of the nozzle tube threads.

    • Thread the nozzle tube into the bottom of the valve body.

    • Tighten the nozzle tube to the valve using 3/4" and 7/8" wrench.

    • Turn the air to the actuator OFF to set the poppet stem into the poppet seat.

    • 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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