How to Repair a JetEdge On/Off Valve #12208

Written By: Ryan Engelhardt (and 4 other contributors)
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Difficulty

Moderate

Steps

9

Time Required

00:15:00 - 00:20:00

Sections

1

Flags

0

Introduction

Hypertherm is in no way affiliated with the above mentioned manufacturer.

  1. Always make sure all high pressure water has been removed from valve by following machine manufacturers' safety instructions. Failure to do so can cause severe injury or death. Turn OFF all water pressure to on/off valve.

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

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

    • Turn on/off valve ON to raise needle from seat.

  2. Valve kit components can be replaced with valve body in mounting collar. With air to actuator ON, unscrew nozzle tube from valve body using a 1" and 13/16" wrench. Turn air actuator OFF at controls and unscrew actuator from valve body using a 7/8" wrench.

    • Valve kit components can be replaced with valve body in mounting collar.

    • With air to actuator ON, unscrew nozzle tube from valve body using a 1" and 13/16" wrench.

    • Turn air actuator OFF at controls and unscrew actuator from valve body using a 7/8" wrench.

  3. Remove old valve components from valve body with included dowel. Thoroughly clean interior of valve body with isopropyl alcohol or similar cleaning agent before replacing components. Visually inspect top and bottom of valve bore for cracks or blemishes.

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

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

    • Visually inspect top and bottom of valve bore for cracks or blemishes.

  4. Insert Needle through HP Seal. Make sure the red o-ring is facing towards needle tip. Apply o-ring lubricant to outside diameter of HP Seal. Slide Needle Guide onto the back end of the Needle. Make sure larger diameter end of Needle Guide faces towards HP Seal.

    • Insert Needle through HP Seal. Make sure the red o-ring is facing towards needle tip.

    • Apply o-ring lubricant to outside diameter of HP Seal.

    • Slide Needle Guide onto the back end of the Needle. Make sure larger diameter end of Needle Guide faces towards HP Seal.

  5. Insert assembly into bore of valve body. Press assembly into place, using included dowel, until Needle Guide bottoms on valve bore.

    • Insert assembly into bore of valve body.

    • Press assembly into place, using included dowel, until Needle Guide bottoms on valve bore.

  6. Thread (hand tighten) actuator onto top of valve body Reconnect air line to top of actuator and turn air to actuator ON to relieve pressure from needle

    • Thread (hand tighten) actuator onto top of valve body

    • Reconnect air line to top of actuator and

    • turn air to actuator ON to relieve pressure from needle

  7. Make sure to thoroughly clean nozzle tube with isopropyl alcohol or similar cleaning agent. Visually inspect nozzle tube for cracks or blemishes. Apply Blue Goop (11111) to top of nozzle tube and insert Seat. Apply Blue Goop to surfaces at top of Seat and to surface of Seat where Needle sits.

    • Make sure to thoroughly clean nozzle tube with isopropyl alcohol or similar cleaning agent. Visually inspect nozzle tube for cracks or blemishes.

    • Apply Blue Goop (11111) to top of nozzle tube and insert Seat.

    • Apply Blue Goop to surfaces at top of Seat and to surface of Seat where Needle sits.

  8. With actuator turned ON, thread nozzle tube into bottom of valve body. Torque adapter to valve using two wrenches (1" and 13/16"). Turn air to actuator OFF to seat Needle into Seat.

    • With actuator turned ON, thread nozzle tube into bottom of valve body.

    • Torque adapter to valve using two wrenches (1" and 13/16").

    • Turn air to actuator OFF to seat Needle into Seat.

  9. Apply water pressure to valve assembly to verify there are no leaks. Quickly cycle valve on and off a few times to purge system of all contaminats before installing cutting head.

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

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

    • Re-install cutting head and continue cutting process.

Finish Line

One other person completed this guide.

Author

with 4 other contributors

Ryan Engelhardt

Member since: 06/26/2012

4 Guides authored

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