Hypertherm 11241 How to Repair a KMT Style On or Off Valve Using Kit Instruction Manual

Hypertherm 11241 How to Repair a KMT Style On or Off Valve Using Kit

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

TOOLS:
1-1/4″ wrench (1)

PARTS

• Repair Kit #11241 (1)
• Valve Stem #11102 (included in kit) (1)
• O-ring #11240 (included in kit) (1)
• Seat #11099 (included in kit) (1)
• Brass Back-up Ring #11104 (included in kit) (1)
• Seal Assembly #11100 (included in kit) (1)
• Stainless Steel Back-up Ring #12733 (1)
• Actuator #12089 (1)
• High-Pressure Gland Fitting #12347 (1)
• Valve Body #11320 (1)
• Nozzle Tube #11436 (1)
• Blue Goop #11111 (1)
• Isopropyl Alcohol (1)

Repairing

Step 1 — How to Repair a KMT Style On/Off Valve Using Kit #11241

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.

Step 2

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

Step 3

• 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.

Step 4

• 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.

Step 5

• Slide the stainless steel back-up ring on to the valve stem point with the chamfer side towards the 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.
• Put the hoop on the high-pressure seal with the sharp edge of the hoop towards the seal.

Step 6

• 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.

Step 7

• 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.

Step 8

• 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.

Step 9

• 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.

Step 10

• 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.

Step 11

• 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.

References

• Waterjet Mobile Assistant by Hypertherm Associates - Mobile Assistant
• Waterjet Replacement Parts | AccuStream
• AccuStream Part# 1-11104- Replaces KMT Part# 10188233
• 1-11111- Replaces Flow A-2185| KMT 20460486 - AccuStream
• AccuStream Part# 1-11240-Replaces KMT Part# 49895584
• On/off Valve Repair Kit Part# 1-11241 Replaces KMT - AccuStream
• AccuStream Part# 1-11320- Replaces KMT Part# 10189181
• AccuStream Part# 1-11436- Replaces KMT Part# 10138428
• AccuStream Part# 1-12089- Replaces KMT Part# 10177855
• AccuStream Part# 1-12347- Replaces KMT Part# BV701184
• AccuStream Part# 1-12733- Replaces KMT Part# 10187250

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>