AccuStream AccuValve On/Off Valve Manual - Page 10

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AccuStream Cutting Systems

Removing the valve body components.

1. Isolate the water pressure from the ON/OFF valve by dumping the pump pressure or closing

the manual isolation valve.

2. Turn the actuator ON and verify that there is NO water pressure.

3. With the actuator pressurized with air, unthread the adapter from the bottom of the valve body

and remove the seat from the bottom.

4. Turn the air to the actuator OFF and REMOVE the airline from the top of the actuator.

5. Unthread the actuator from the top of the valve body.

6. With the valve body still in the mounting collar, remove the seal components by using the seal

removal tool 11205 and push up through the bottom of the valve body.

7. Thoroughly wash out the interior of the Valve Body before replacing components.

NOTE: The needle guide ID may have build-up of seal material at the bottom of the .093 dia

section. After extensive use, this build-up may stop the needle from closing. If the Guide ID is

going to be re-used, it must be cleaned. A .093 drill bit can be used, to manually remove this

material.

Installing new valve body components.

1. Place the needle bearing over the needle with the needle

going through the vent hole side.

2. Place the valve seal with the o-ring side out over the end

of the needle.

3. Lubricate the o-ring on the valve seal and insert into the

top of the valve body until the needle guide is flush to t

top of the bore.

4. Thread (hand tighten) the actuator onto the top of the

valve body. Reattach air to the actuator and turn actuator

air pressure on to pull the needle valve up.

5. Apply AccuGoop to the surfaces at the top of seat and to

the surface of the seat where the needle seats.

6. Place the seat into the pilot diameter at the top of the

adapter and thread the adapter into the bottom of the

valve. Torque the adapter to the valve using the two-

wrench technique.

7. Turn off the air to the actuator.

8. Reapply high-pressure water to the valve and check for leaks.

9. Apply water pressure to the valve assembly to verify there are no leaks. Before installing the

Cutting Head quickly cycle the Valve on and off a few times to purge all contaminants.

Reinstall the Cutting Head and commence cutting.

13084 ON/OFF VALVE & CUTTING HEAD MANUAL