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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 make sure there is no pressurized water in  the valve.
  • 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 make sure there is no pressurized water in the valve.

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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: Unthread high-pressure gland fitting from the valve body. Image 3/3: Unthread high-pressure gland fitting from the valve body.
  • Valve components can be replaced with the valve body mounted to the table.

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

  • Unthread high-pressure gland fitting from the valve body.

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Image 1/3: Disconnect the air line from the actuator. Image 2/3: Unthread the actuator from the valve body. Image 3/3: Unthread the actuator from the valve body.
  • Turn the air to the actuator OFF at the controls.

  • Disconnect the air line from the actuator.

  • Unthread the actuator from the valve body.

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Image 1/3: Thoroughly clean the interior of the valve body with isopropyl alcohol or a similar cleaning agent before replacing the components. Image 2/3: 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 3/3: 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].
  • 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.

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Image 1/3: Slide the  [http://www.accustream.com/all-products/12733.html|stainless steel back-up ring] on to the valve stem point with the chamfer side towards O-ring. Image 2/3: 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 3/3: 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.
  • Slide the O-ring on to the point of the valve stem.

  • Slide the stainless steel back-up ring on to the valve stem point with the chamfer side towards O-ring.

  • Slide the brass back-up ring on to the valve stem point with the chamfer side away from the stainless steel back-up ring.

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Image 1/3: Slide the hoop and the high-pressure valve seal onto the valve stem with the hoop towards the brass back-up ring. Image 2/3: Apply [http://www.accustream.com/all-products/11447.html|high vacuum grease] to the outside diameter of the high-pressure valve seal. Image 3/3: Apply [http://www.accustream.com/all-products/11447.html|high vacuum grease] to the outside diameter of the high-pressure valve seal.
  • Put the hoop on the high-pressure seal with the sharp edge of the hoop towards the seal.

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

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

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Image 1/3: Push the valve stem with the dowel until it bottoms out. Image 2/3: Apply [http://www.accustream.com/all-products/11111.html|Blue Goop] to the actuator threads. Image 3/3: Apply [http://www.accustream.com/all-products/11111.html|Blue Goop] to the actuator threads.
  • 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.

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Image 1/3: Reconnect the air line to the top of actuator. Image 2/3: Turn the air to the actuator ON at the controls. Image 3/3: Turn the air to the actuator ON at the controls.
  • Thread (hand tighten) the actuator into the top of the valve body until it bottoms out.

  • Reconnect the air line to the top of actuator.

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

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

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Image 1/3: Thread the high-pressure gland fitting into the bottom of the valve body. Image 2/3: Tighten the high-pressure gland fitting using a 1-1/4" wrench. Image 3/3: Tighten the high-pressure gland fitting using a 1-1/4" wrench.
  • 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.

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Image 1/3: Apply water pressure to the valve assembly to verify there are no leaks. Image 2/3: Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head. Image 3/3: Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head.
  • 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.

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Image 1/1:
  • Re-install the cutting head and continue the cutting process.

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Finish Line

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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