Instructions - Parts 2K Manual Dispense Valve 332198C EN For use with two component proportioners to mix and dispense beads of non-abrasive material. For professional use only. Not approved for use in European explosive atmosphere locations. Model 24R021 2000 psi (14 MPa, 137 bar) Maximum Fluid Working Pressure Important Safety Instructions Read all warnings and instructions in this manual and the system manual. Save all instructions.
Related Manuals Contents Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Important Isocyanate (ISO) Information . . . . . . . . 5 Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 5 Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . 5 Keep Components A (ISO) and B (RES) Separate 5 Moisture Sensitivity of Isocyanates . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals. • Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings.
Important Isocyanate (ISO) Information Important Isocyanate (ISO) Information Isocyanates (ISO) are catalysts used in two component materials. Isocyanate Conditions Spraying or dispensing materials containing isocyanates creates potentially harmful mists, vapors, and atomized particulates. Read material manufacturer’s warnings and material MSDS to know specific hazards and precautions related to isocyanates.
Important Isocyanate (ISO) Information Changing Materials NOTICE Changing the material types used in your equipment requires special attention to avoid equipment damage and downtime. • When changing materials, flush the equipment multiple times to ensure it is thoroughly clean. • Always clean the fluid inlet strainers after flushing. • Check with your material manufacturer for chemical compatibility.
Installation Installation 3. Thread the handle (K) onto the manifold (L). 4. Connect the gun fluid supply hoses to the A (ISO) and B (RES) fluid inlets of gun. 1. Relieve all system pressure before installing the dispense valve. NOTE: Hoses are color coded: red for component A (ISO), blue for component B (RES). Red (ISO) usually is connected to the left side of the valve (as viewed from the back of the gun). 5. Perform Prime procedure, page 8.
Operation Operation Prime 1. Use lever (H) to close the dispense valve inlet ball valves (J). NOTICE Perform this procedure whenever air is introduced into the material lines, such as after connecting the material supply lines to the dispense valve. Always open and close lever (H) fully and quickly. Opening the valve partially or slowly will cause soft spots in the material and may shut down the proportioner because of a pressure imbalance. 1. Perform Pressure Relief Procedure on page 10. 2.
Operation Ratio Checking NOTE: Use the lowest proportioner pressure setting that produces the desired flow. NOTE: Use ratio check nozzle 255247 with retaining nut 512292. Purchase separately. The output mix ratio of your proportioner can be checked by dispensing the two fluids separately out of the nosepiece into tared cups. The cups can then be weighed and the weights divided to get the mix ratio by weight. Ratio checks provide information about the ratio of an overall sample.
Operation Pressure Relief Procedure Follow the Pressure Relief Procedure whenever you see this symbol. This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment.
Maintenance Install Restrictors or Plugs Two 0.024 in. restrictors are installed with the gun. An extra 0.032 in. restrictor is included with the gun. If necessary, use this restrictor to balance the pressures. Optional restrictors in various sizes are also available. Restrictors create back pressure and make up for viscosity differences between A (ISO) and B (RES). See pressure drop chart in FIG. 2 on page 15 and see the Volume Balancing section. See 249765 Restrictor Kit on page 14.
Troubleshooting Troubleshooting Problem Cause Pressure is higher on one side when setting pressure with function knob. Pump intake valve partially plugged. Clean pump intake valve. Air in hose. Fluid is compressible. Purge air from hose. Unequal size hoses. Use matching hoses. Feathering the valve lever to decrease the flow rate through the gun. When opening or closing the valve, always move the lever all the way. Do not try to control the flow rate by partially opening the lever.
Parts Parts 14 8 8 13 12 4 59 5 3 6 48 10 1 27 4 27 ti20581b 3 28 16 10 11 NOTE: Apply thread sealant on all tapered thread fittings. 5 Orient lever (9) and adjust balls in valves (8) so they are closed when lever is pulled back. Carefully install the lever onto the ball valve (8) studs, making sure the stud flats line up with the slots in the lever.
Accessories Accessories Restrictors 15E372 15E373 15E374 15E375 15E376 15E377 0.018 in. Orifice Restrictor 0.024 in. Orifice Restrictor 0.032 in. Orifice Restrictor 0.040 in. Orifice Restrictor 0.062 in. Orifice Restrictor 0.094 in. Orifice Restrictor Gun Length Reduction To reduce the overall length of the gun from 47 in. (1194 mm) to 24 in. (610 mm), purchase two of each of the following fittings: 503279 and 151243. Use these fittings to replace fittings (4) and tubes (5).
Technical Data Typical Restrictor Pressure Drop Pressure Drop in psi (MPa, bar) 2500 (17.5, 175) Key: 5000 cps, 1.0 gpm (3.8 lpm) 2000 (14.0, 140) 5000 cps, 0.25 gpm (0.95 lpm) 1000 cps, 0.25 gpm (0.95 lpm) 1500 (10.5, 105) 500 cps, 0.25 gpm (0.95 lpm) 200 cps, 0.25 gpm (0.95 lpm) 1000 (7.0, 70) 200 cps, 0.10 gpm (0.38 lpm) 500 (3.5, 35) 249036 O-ring (CC) 0.094 15E377 0.062 15E376 0.040 15E375 0.032 15E374 0.024 15E373 0.018 15E372 Restrictor Diameter and Part No.
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
