Operation; Sequence Of Operation - Graco Dispensit 1093 Operation & Maintenance Manual

Operation

The operation of the 1093 metering valve is controlled
by an external source. If a Control Box was purchased,
see the Control Box manual for operation instructions.
See Related Manuals on page 2.

Sequence of Operation

Step 1: Reload
• Spool shifts to the right
• Material feed inlet is opened
• Material is transferred into the metering chambers
by a pressurized feed system
• Outlet port is blocked
• Metering rod is retracted to a precise position
determining the volume of each material
313566D
Step 2: Shift
• The balanced spool shifts to the dispense position
• Material path to the needle is opened
• Material feed inlet port is blocked
• Metering rod remains in the retracted position
Step 3: Dispense
• Metering rod extends
• Material is dispensed from the metering chamber
into the needle
Upon completion of the dispense stroke, the metering
rod and spool shifts back to the reload position.
Operation
15