Graco Dispensit 1230 [10/22] Valve disassembly

Valve Disassembly

6.1 Removing the Valve

To remove the valve from its work position requires a few steps to assure that the valve can be replaced in

the same manner. Use care when servicing! This valve contains plastic components. Complete these few

steps to remove the dispense valve:

• Purge residual pressure from material line, and then remove the material line from the dispense valve.

• Carefully remove the incoming air line from the diaphragm. Do not break the plastic barbs.

• Move the metering rod to its lower position by setting the maximum stroke on the adjustment knob.

• Remove the dispense valve by removing the two 8-32 machine screws from the front of the valve.

• Carefully slide the metering head from the slot in the drive piston.

• Take the valve to a clean work area for disassembly.

6.2 Required Tooling

The following tools will be required to rebuild either dispense valve:

• 1/8” Straight Screwdriver

• Hooked Dental Pick

• 1/4” Open-End Box Wrench

• Internal Snap Ring Pliers

• 3/32” Allen Wrench

• 5/64” Allen Wrench

• Small Bar Clamp.

WARNING: Remove residual material pressure before removing the material line from the valve.

CAUTION: Use caution when handling the valve so the needle(s) don’t get damaged or broke.