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Instructions–Parts List
MODEL 482
Automatic Metering Valves
Used to provide precise dispense of medium– to high–viscosity sealants and
adhesives in a non–hazardous location.
3200 psi (22.0 MPa, 220 bar) Maximum Fluid Working Pressure
Part No. C02021, Series B
Model 482–B
7/8–18 uns externally threaded fluid inlet boss and 7/16–20 unf mounting hole
1/4 npt(f) material inlet, 1/8 npt(f) material outlet
Part No. C02022, Series C
Model 482–C
7/16–20 unf mounting hole
1/4 npt(f) material inlet, 1/8 npt(f) material outlet
Part No. C02025, Series B
Model 482–E
7/16–20 unf mounting hole
1/4 npt(f) material inlet, 1/4 npt(f) material outlet
Part No. C02078, Series B
Model 482–DA, with double acting air cylinder
7/16–20 unf mounting hole
1/4 npt(f) material inlet, 1/4 npt(f) material outlet
Part No. C02026
Model 482–HA; same as Part No. C02022, with trigger-actuated pistol grip handle
Part No. C02027
Model 482–MS, for moisture sensitive materials;
same as Part No. C02021, with seal fluid reservoir and plugged 7/16–20 mounting hole
Important Safety Instructions.
Read all warnings and instructions in this manual.
Save these instructions.
U.S. Patent Nos. 3,160,331 and 3,132,775
310543E
EN
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Summary of Contents for Graco 482 Series
- Page 1 Instructions–Parts List MODEL 482 310543E Automatic Metering Valves Used to provide precise dispense of medium– to high–viscosity sealants and adhesives in a non–hazardous location. 3200 psi (22.0 MPa, 220 bar) Maximum Fluid Working Pressure Part No. C02021, Series B Model 482–B 7/8–18 uns externally threaded fluid inlet boss and 7/16–20 unf mounting hole 1/4 npt(f) material inlet, 1/8 npt(f) material outlet Part No.
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Page 2: Table Of Contents
......Graco Standard Warranty ..... . -
Page 3: Warnings
D Route the hoses away from the traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 82° C (180° F) or below –40° C (–40° F). D Use fluids and solvents that are chemically compatible with the equipment wetted parts. See the Technical Data sections of all the equipment manuals. - Page 4 WARNING SKIN INJECTION HAZARD Spray from the metering valve, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury. D Fluid injected into the skin might look like just a cut, but it is a serious injury.
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Page 5: Setup
The grounding of every part of your system is valve can be supplied by any standard Graco pump. essential. Read the warning section, FIRE AND EXPLOSION HAZARD, on 1. Inspect the metering valve for shipping damage. If page 4 and follow the grounding damage is found, notify the carrier immediately. -
Page 6: Operation
Operation Pressure Relief Procedure An air operated spool valve directs pressurized fluid to either side of a floating piston. Shot size is easily and quickly changed by simply lengthening or shortening WARNING the piston stroke (see Adjusting the Valve). INJECTION HAZARD At its maximum of 4 cc of moderate viscosity fluid, the The system pressure must be manually valve will dispense up to 15 shots per minute. -
Page 7: Troubleshooting
Troubleshooting 1. Relieve the pressure. WARNING 2. Check all possible problems and solutions before To reduce the risk of serious injury whenever you disassembling pump. are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. Problem Cause Solution Metering valve fails to dispense... -
Page 8: Service
Service AMV Disassembly a. Remove the retaining ring (12) with a retaining ring compression tool. This procedure describes how to disassemble the automatic metering valve. Refer to Parts information b. Place the retainer (2) on a flat surface with the on pages 13 and 14. -
Page 9: Amv Reassembly
Service AMV Reassembly b. Install the quad ring (20*{) on the air piston (4) by carefully stretching the quad ring into the This procedure describes how to reassemble the groove in the piston. On AMV C02078 only, automatic metering valve. Refer to Parts information install the second quad ring (21{) on the on pages 13 and 14. -
Page 10: Amv Disassembly (C02026)
Service AMV Disassembly (C02026) 1. Disconnect the tubing (104) from the elbow (102). 2. Remove the socket-head screw (107) and the This procedure describes how to disassemble the second screw (not listed) that secures the meter- pistol grip metering valve. Refer to Parts information ing valve (101) to the mounting block (113). -
Page 11: Amv Reassembly (C02026)
Service AMV Reassembly (C02026) 3. Install the valve (106) that controls the air inlet pressure to the gun. This procedure describes how to reassemble the pistol grip metering valve. Refer to Parts information on 4. Reconnect the 10-32 x 1/4” fitting (105) that con- page 15. -
Page 12: Amv Disassembly (C02027)
Service AMV Disassembly (C02027) AMV Reassembly (C02027) This procedure describes how to disassemble the This procedure describes how to reassemble the automatic metering valve. Refer to Parts information automatic metering valve. Refer to Parts information on page 16. on page 16. NOTE: The numbers in parentheses in the text refer to NOTE: The numbers in parentheses in the text refer to reference numbers in the parts drawings and parts... -
Page 13: Parts
Parts Part Nos. C02021, C02022, and C02025 Ref. Ref. Part No. Description Qty. Part No. Description Qty. C02029 BODY; used on C02022, C02025 1 114027 WASHER, flat, no. 6 C02028 BODY; used on C02021 C02032 NUT, lock, nylon no. 5–40 C02043 RETAINER, outlet;... -
Page 14: Part No. C02078
Parts Part No. C02078 Model 482–DA; with double acting air cylinder and 1/4 npt(f) outlet Ref. Ref. Part No. Description Qty. Part No. Description Qty. C02079 BODY, valve, meter 111317 RING, retaining C02044 RETAINER, outlet 168518 O-RING, fluoroelastomer C02077 CAP, cylinder 168110 O-RING, fluoroelastomer C02074... -
Page 15: Part No. C02026
Parts Part No. C02026 Model 482–HA; Model 482–C with trigger-actuated pistol grip handle Ref. Ref. Part No. Description Qty. Part No. Description Qty. C02022 METERING VALVE C02039 HANDLE C20850 ELBOW C26312 TRIGGER C19955 SOCKET-HEAD SCREW C04083 SPRING 192331 TUBING C20065 ROLL PIN C20861 FITTING (10-32 x 1/8 in.) -
Page 16: Part No. C02027
Parts Part No. C02027 AMV for use with moisture sensitive This AMV is designed to be used with moisture materials. sensitive materials. Ref. 2.75 in. (70 mm) Part No. Description Qty. approx. fill level C02021 AUTOMATIC METERING VALVE C04104 CARTRIDGE; 2.5 oz Air Inlet Port C26069 END CAP... -
Page 17: Accessories
Accessories Use Only Genuine Graco Parts and Accessories Fluid Nozzles These nozzles fit all automatic metering valves covered in this manual. Orifice Size Nozzle Adapter Orifice Size Part No. Part No. 3/64 Diameter 3/64 in. C17008; not required (1.2 mm) -
Page 18: Technical Data
Technical Data Category Data Maximum fluid working pressure 3200 psi (22.0 MPa, 220 bar) Minimum fluid working pressure 50 psi (0.34 MPa, 3.4 bar) Minimum air supply pressure 80 psi (0.55 MPa, 5.5 bar) Viscosity range 3000 to 1 million centipoise Shot size range 0.2 to 4.0 cc Shot cycle rate... -
Page 19: Dimensions
Dimensions C02021, C02022, and C02025 Metering Valves 5.50 in. max., 5.19 in. min. C02021 Shown (139.7 mm max., 131.8 mm min.) 7/16–20 x 5/8 in. Deep Mounting Hole 2.06 in. (52.3 mm) Air Supply Inlet Material Outlet 1/8 npt Minimum 1/8 npt 80 psi (C02021 and... -
Page 20: Graco Standard Warranty
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.
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