Introduction
Hypertherm is in no way affiliated with the above mentioned manufacturer.
Tools
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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.
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Turn OFF all water pressure to the on/off valve.
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Turn the on/off valve ON to raise the valve stem (13688, included in kit) from the seat.
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The valve components can be replaced with the valve body mounted to the table.
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Loosen the high-pressure gland fitting using a 1-1/4" wrench.
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Turn the air to the actuator OFF at the controls.
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Disconnect the air line from the actuator.
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Unthread the actuator from the valve body.
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Remove all the valve components fromthe valve body with the included dowel.
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Thoroughly clean the interior of the valve body with isopropyl alcohol or a similar cleaning agent before replacing the components.
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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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Slide the O-ring on to the point of the valve stem.
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Slide the stainless steel back-up ring on to the valve stem point with the chamfer side towards the O-ring.
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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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Put the hoop on to the high-pressure seal with the sharp edge of the hoop towards the seal.
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Slide the hoop and the high-pressure valve seal onto the valve stem with the hoop towards the brass back-up ring.
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Apply the high-pressure lubricant to the outside diameter of the high-pressure valve seal.
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Put the point of the valve stem into the valve body.
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Reconnect the air line to the top of the actuator.
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Turn the air to the actuator ON at the controls.
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Apply Blue Goop to all surfaces of the seat.
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Put the seat into the bottom of the valve body.
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Clean the valve nut threads and the top of the nozzle tube of all Blue Goop.
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Reapply Blue Goop to the threads of the high-pressure gland fitting and to the top of the nozzle tube.
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Thread the high-pressure gland fitting into the bottom of the valve body.
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Tighten the high-pressure gland fitting using a 1-1/4" wrench.
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Turn the air to the actuator OFF at the controls.
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Apply water pressure to the valve assembly to verify there are no leaks.
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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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Re-install the cutting head and continue the cutting process.
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