Hypertherm - Cut with Confidence

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Image 1/2: Turn OFF all water pressure to the on/off valve. Image 2/2: Turn the on/off valve ON to raise the [http://www.accustream.com/all-products/11102.html|valve stem] from the [http://www.accustream.com/all-products/11099.html|seat].
  • Always make sure all high-pressure water has been removed from the valve by the following 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 from the seat.

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Image 1/3: Loosen the [http://www.accustream.com/all-products/12347.html|high-pressure gland fitting] using a 1-1/4" wrench. Image 2/3: Turn the air to the [http://www.accustream.com/all-products/12089.html|actuator] OFF at the controls. Image 3/3: Turn the air to the [http://www.accustream.com/all-products/12089.html|actuator] OFF at the controls.

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Image 1/3: Unthread the actuator from the valve body. Image 2/3: Remove all the valve components from the valve body with the included dowel. Image 3/3: Remove all the valve components from the valve body with the included dowel.
  • 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.

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Image 1/3: Visually inspect the top and bottom of the valve bore for cracks/blemishes. If excessive wear or cracks are visible, replace the  [http://www.accustream.com/all-products/11320.html|valve body]. Image 2/3: Slide the [http://www.accustream.com/all-products/11240.html|O-ring] on to the point of the valve stem. Image 3/3: Slide the [http://www.accustream.com/all-products/11240.html|O-ring] on to the point of the valve stem.
  • 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.

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Image 1/3: Slide the[http://www.accustream.com/all-products/11104.html|brass back-up ring] on to the valve stem point with the chamfer side away from the stainless steel back-up ring. Image 2/3: Put the [http://www.accustream.com/all-products/11100.html|hoop] on the [http://www.accustream.com/all-products/11100.html|high-pressure seal] with the sharp edge of the hoop towards the seal. Image 3/3: Put the [http://www.accustream.com/all-products/11100.html|hoop] on the [http://www.accustream.com/all-products/11100.html|high-pressure seal] with the sharp edge of the hoop towards the seal.

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Image 1/3: Apply the high-pressure lubricant to the outside diameter of the high-pressure valve seal. Image 2/3: Put the point of the valve stem into the valve body. Image 3/3: Put the point of the valve stem into the valve body.
  • Slide the hoop and the high-pressure valve seal onto the valve stem with the hoop towards the brass back-up ring.

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

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

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Image 1/3: Apply [http://www.accustream.com/all-products/11111.html|Blue Goop] to the actuator threads. Image 2/3: Thread (hand tighten) the actuator into the top of the valve body until it bottoms out. Image 3/3: Thread (hand tighten) the actuator into the top of the valve body until it bottoms out.
  • 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.

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Image 1/3: Turn the air to the actuator ON at the controls. Image 2/3: Apply Blue Goop to all surfaces of the seat. Image 3/3: Apply Blue Goop to all surfaces of the seat.
  • 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.

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Image 1/3: Clean the high-pressure gland fitting threads and at the top of the [http://www.accustream.com/all-products/11436.html|nozzle tube] of all Blue Goop. Image 2/3: Reapply Blue Goop to the threads of the high-pressure gland fitting and at the top of the nozzle tube. Image 3/3: Reapply Blue Goop to the threads of the high-pressure gland fitting and at the top of the nozzle tube.
  • Put the seat into the bottom of the valve body.

  • Clean the high-pressure gland fitting threads and at the top of the nozzle tube of all Blue Goop.

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

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Image 1/3: Tighten the high-pressure gland fitting using a 1-1/4" wrench. Image 2/3: Turn the air to the actuator OFF at the controls. Image 3/3: Turn the air to the actuator OFF at the controls.
  • 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.

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Image 1/3: Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head. Image 2/3: Re-install the cutting head and continue the cutting process. Image 3/3: Re-install the cutting head and continue the cutting process.
  • 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.

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Finish Line

One other person completed this guide.

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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