Graco 312782D User Manual
Instructions-Parts
Air Actuated
Dispense Valve
To dispense plural component fluids and solvents. For professional use only.
Part No. 15X303
High Pressure Dispense Valve
3000 psi (21 MPa, 207 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Working Pressure
Part No. 15X304
Low Pressure Dispense Valve
300 psi (2.1 MPa, 21.0 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7 bar) Maximum Air Working Pressure
312782D
EN
Important Safety Instructions
Read all warnings and instructions in this manual. For complete
warnings and instructions see your proportioning system manual.
Hazard symbols refer to specific procedure risks. Save all instructions.
15X303 High Pressure Valve
15X304 Low Pressure Valve
TI11663A
TI11581A
Related Manuals
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Connect the Air Lines . . . . . . . . . . . . . . . . . . . . . 3
Connect the Fluid Lines . . . . . . . . . . . . . . . . . . . 3
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Pneumatic Schematic (used with
ProMix 2KS) . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Settings and Adjustments . . . . . . . . . . . . . . . . . . 6
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Clean the Dispense Valve Daily . . . . . . . . . . . . . 6
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
15X303 High Pressure Valve . . . . . . . . . . . . . . . 9
15X304 Low Pressure Valve . . . . . . . . . . . . . . . 10
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 12
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . 12
Related Manuals
See the following manuals for additional information on
the dispense valves.
Manual Description
312775 ProMix 2KS Manual System Installation
312776 ProMix 2KS Manual System Operation
312777 ProMix 2KS Manual System Repair-Parts
312778 ProMix 2KS Automatic System Installation
312779 ProMix 2KS Automatic System Operation
312780 ProMix 2KS Automatic System
Repair-Parts
312781 Fluid Mix Manifold
312782 Dispense Valve
312783 Color and Catalyst Change Valve Stacks
312787 Color Change Module Kit
2 312782D
Installation
Installation
FIG. 2 shows the dispense valves installed in an electronic 2-component proportioning system. In this example, the dispense valves are used as dose valves for
components A and B (DVA, DVB), an air purge valve
(APV), and a solvent purge valve (SPV).
F
IG
. 3 shows a pneumatic schematic of a complete
2-component proportioning system, in which the dispense valves are also used as A and B dump valves,
and color change valves.
Connect the Air Lines
Clean all lines and connections of dirt, burrs, etc., and
blow them out with clean air before connecting them to
the system. The air supply line should contain an air filter to remove harmful dirt and moisture from the compressed air.
Use a normally closed 4-way air solenoid valve to control the dispense valve. Attach 5/32 in. (4 mm) OD air
supply lines from the 4-way valve to the air inlets of the
dispense valve.
Accessories
Two accessories are required in your system: a
bleed-type master air valve and a fluid drain valve.
These accessories help reduce the risk of serious injury
including fluid injection, splashing in the eyes or on the
skin, and injury from moving parts if you are adjusting or
repairing the pump.
The bleed-type master air valve is required only with
air-powered pumps. It relieves air trapped between this
valve and the pump after the air regulator is shut off.
Trapped air can cause the pump to cycle unexpectedly.
Locate the valve close to the pump.
The fluid drain valve helps relieve fluid pressure in the
displacement pump, hose, and dispense valve; triggering the valve to relieve pressure may not be sufficient.
Connect the Fluid Lines
Connect a grounded fluid line from the pump or meter to
the 1/4 npt fluid inlet of the dispense valve adapter.
If fluid is supplied by a pump, install a fluid pressure regulator upstream of the dispense valve. A fluid regulator
enables you to control fluid pressure more accurately
than by regulating air pressure to the pump.
Install a fluid filter to remove particles and sediment
which may clog the nozzle.
Grounding
To reduce the risk of static sparking, ground the pump
and all other components used or located in the dispensing area. Check your local electrical code for
detailed instructions for your area and type of equipment
and be sure to ground all of these components.
•
Fluid hoses:
with a maximum of 500 feet (150 m) combined hose
length to ensure grounding continuity.
•
Dispense valve:
tion to a properly grounded fluid hose and pump.
use only electrically conductive hoses
obtain grounding through connec-
312782D 3
Installation
15X303 High Pressure Valve
5/32 in. (4 mm) OD air tube
fitting, to close
5/32 in. (4 mm) OD air tube
fitting, to open
Valve position
sight port
FIG. 1. Valve Air Ports
Seal weep port
and Lubrication
Cup connection
TI11581A
15X304 Low Pressure Valve
Actuation indicator
Optional air
open port
5/32 in. (4 mm) OD air tube
fitting, to open
TI11663A
MA
APV
APL SPL
IG
. 2: Typical Installation
F
Key:
MA Component A Meter
DVA Component A Dose Valve
MB Component B Meter
DVB Component B Dose Valve
MS Solvent Meter
SPV Solvent Purge Valve
DVA
BSLASL
DVB
APV Air Purge Valve
ASL Component A Supply Line
BSL Component B Supply Line
APL Air Purge Line
SPL Solvent Purge Line
MB
MS
SPV
TI12556a
4 312782D
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