See page 2 for Table of Contents

Part No. 965766

Stainless Steel Wetted Parts, Machine

Mount Valve

Part No. 965767

Aluminum Wetted Parts, Hand???held Valve with internal air switch

Part No. 965768

Aluminum Wetted Parts, Hand???held Valve with electric switch for remote operation

Part No. 965786

Aluminum Wetted Parts, Automatic

Machine Mount Valve

Part No. 243482

Stainless Steel Wetted Parts, Precision Swirl Orbiter Mounted with Nozzle Accessory

8370A

Model 965768 shown

Table of Contents

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation/Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . . . . 30

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

NOTES:

DReference numbers and letters in parentheses in the text refer to the callouts in the figures and drawings.

DAccessories are available from your Graco representative. If you supply your own accessories, be sure they are adequately sized and pressure-rated to meet the system???s requirements.

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

To reduce the risk of fire, explosion, and serious injury, proper electrical ground- ing of every part of your system is es- sential. Read the warning section Fire and Explosion Hazard on page 4, and follow the grounding instructions below.

The following grounding instructions are minimum requirements for a basic dispensing system. Your system may include other equipment or objects which must be grounded. Check your local electrical code for detailed grounding instructions for your area and type of equipment. Your system must be connected to a true-earth ground.

DFluid supply container: ground according to your local code.

DFlammable liquids in the spray area: must be in approved, grounded containers. Do not store more than the quantity needed for one shift.

DAll solvent pails used when flushing: ground according to local code. Use only metal pails, which are conductive. Do not place the pail on a non-conductive surface, such as paper or cardboard, which interrupts the grounding continuity.

DTo maintain grounding continuity when flushing or relieving pressure, hold a metal part of the valve firmly to the side of a grounded metal pail, then trigger the valve.

How to Use the Valve Trigger Safety

WARNING

SKIN INJECTION HAZARD

To prevent accidental triggering of the

gun and reduce the risk of a serious inju- ry, including fluid injection or splashing in

the eyes or on the skin, lock the gun trigger safety when you stop dispensing.

1.If you are using one of the hand-held versions of the valve, lock the valve trigger safety by turning the latch to a right angle with the gun body. See Fig. 2.

2.To unlock the valve trigger safety, push the latch out and turn it parallel with the gun body.

Fig. 2

8459A

Connections

DThe fluid inlet is 1/4 npt(f).

DThe fluid outlet is 1/4 npt(f) or 3/4???16 unf(m).

DAir inlets are 1/8 npt(f).

DSee Accessories, page 25, to order air control valves and tubing.

Electric Switch Hand Held Valve

Install a remote 4-way air control valve to operate the valve. Connect an OPEN air signal air line to the 1/8 npt(f) port on the side of the valve. Connect a CLOSE air signal air line to the 1/8 npt(f) port on the opposite side of the valve. Wire the normally open valve switch to the system control.

1

Machine Mount Valve

Install a remote 4-way air control valve to operate the valve. Connect an open air signal air line to the 1/8 npt(f) OPEN port. Connect a close air signal air line to the 1/8 npt(f) CLOSE port.

Air Switch Hand Held Valve

This valve has a single air inlet and an internal 4-way spool valve, which directly operates the air piston. Connect the air line to the 1/8 npt(f) air inlet.

1Solder to terminals in cable connectors as shown in Detail A.

2Normally open, momentary contact switch.

WARNING

COMPONENT RUPTURE HAZARD

To reduce the risk of over-pressurization, which can cause component rupture and serious injury, never exceed 3000 psi (21 MPa, 207 bar) fluid pressure, or 120 psi (0.84 MPa,

8.4 bar) air pressure to the valve.

Pressure Relief Procedure

WARNING

SKIN INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from

starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

Dare instructed to relieve the pressure

Dstop dispensing

Dcheck or service any of the system equipment

Dinstall or clean the nozzle

1.Shut off the air to the dispense valve, if applicable.

2.Shut off the air to the supply pumps.

3.Close the bleed-type master air valve (required in your system).

4.Hold a metal part of the valve firmly to the side of a grounded metal pail, and trigger the dispense valve to relieve pressure.

5.Open the fluid drain valve (required in your system), having a grounded metal container ready to catch the drainage.

6.Leave the fluid drain valve open until you are ready to dispense again.

If you suspect that the dispense needle or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the needle retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the needle or hose.

Electric Switch Hand Held Valve

DBe sure the air supply lines are connected correctly to the OPEN and CLOSE valve air ports.

DTo open or close the valve and maintain the open or closed status, a minimum of 40 psi (280 kPa, 2.8 bar) air pressure must be supplied and maintained at the OPEN or CLOSE port.

DThe trigger only activates the electrical switch in the handle, which turns the remote solenoid on and off.

DTrigger the gun to turn the solenoid on. Release the trigger to turn the solenoid off.

Machine Mount Valve

DBe sure the air supply lines are connected correctly to the OPEN and CLOSE valve air ports.

DTo open or close the valve and maintain the open or closed status, a minimum of 40 psi (280 kPa, 2.8 bar) air pressure must be supplied and maintained at the OPEN or CLOSE port.

To open the valve:

1.Apply air pressure to the OPEN air port on the valve, and remove air pressure from the CLOSE air port on the valve.

2.Maintain air pressure on the OPEN air port to keep the valve open.

To close the valve:

1.Apply air pressure to the CLOSE air port on the valve, and remove air pressure from the OPEN air port on the valve.

2.Maintain air pressure to the CLOSE air port to keep the valve closed.

Air Switch Hand Held Valve

The valve operation is such that there are only two valve conditions: either fully open or fully closed.

The valve is opened and closed by the internal air control valve. Trigger the gun to open the valve. Release the trigger to close the valve.

Shaft Stroke Adjustment (Models 965766, 965767, 965768, and 965786 only)

Adjust the shaft stroke to balance the valve between ???snuff-back??? and ???push-out???.

DA long stroke will give maximum snuff-back but it may cause push-out when the valve opens.

DShortening the stroke of the shaft will minimize the material pushed out when the valve opens and will also increase the material back pressure through the valve.

To adjust the shaft stroke:

1.Loosen the hex nut (44) from the adjustment nut (43).

2.Adjust the nut (44) along the adjustment shaft (42) to the desired position.

DThe valve is at full stroke when the hex nut

(44)is at the end of the adjustment shaft (42).

DAdjusting the nut (44) on the shaft (42) towards the valve, or clockwise, will reduce the stroke length.

DAdjusting the nut away from the valve, or counterclockwise, will lengthen the stroke.

3.Tighten the hex nut (44) to the adjustment nut (43) to set the adjustment.

42

44

43

Preventative Maintenance

There is a grease filled secondary seal/bearing area on the valve shaft. Every 10,000 cycles, or twice each month, new grease should be flushed across this area. Each valve has two flush grease fittings. A small grease gun is provided with each valve.

To grease the valve:

1.Remove the grease fitting from one side of the gun.

2.Pump grease (Part No. 115982) across the valve until clear grease comes out of the other side.

3.Reinstall the grease fitting.

WARNING

SKIN INJECTION HAZARD

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure

Relief Procedure on page 8.

1.Relieve the pressure.

2.Check all possible causes to the problem before disassembling the pump.

WARNING

SKIN INJECTION HAZARD

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure

Relief Procedure on page 8.

Disassembly

1.Relieve all air and fluid pressure.

2.Disconnect the valve from the system.

3.Remove the four nosepiece screws (15), and pull the nosepiece (40) away from the valve. Remove the snuff-back ring (41). See Fig. 5, page 14.

4.Use an 1/8 in. pin punch in the needle hole (A) to unscrew the needle (27). If the shaft (3) spins, insert a dowel pin in the shaft hole (B) to hold it steady, then unscrew the needle (27).

5.Remove the seat (25), gasket (38), and o-ring (39).

6.Remove the two fluid housing screws (23) and remove the fluid housing (26). Remove the primary fluid seal (22) from the fluid housing (26).

7.Pull the bearing/lube housing (19) from the air cylinder (1). Remove the bearing (21), bearing o-ring (16), and secondary fluid seal (20). Remove the grease fittings (18).

8.Remove the C-clip (12) from the back of the air cylinder (1). Push the shaft (3) into the air cylinder to dislodge the air cylinder cap (11). Remove the cap o-ring.

9.Remove the internal C-clip (12). Push the shaft (3) to dislodge the piston (10) assembly from the air cylinder (1).

10.Remove the adjustment nut (44) from the shaft (3).

11.Remove the adjustment shaft (42) from the shaft

(3).

12.Remove the pin (7), o-ring (9), and piston o-ring

13.Use a 1/4 in. pin punch to knock out the bearings

(5)and o-rings (4).

Air Switch Handle (if equipped)

1.Remove the trigger (56).

2.Loosen the set screw above the trigger safety. Pull off the handle (55).

3.Remove the four retaining screws (60). Pull the housing (50) and gasket (30) away from the air cylinder (1).

Air Valve

1.Unscrew the stem guide (58).

2.Remove the trigger pin (59), o-ring (57), spool (49), spacers (51, 52), o-rings (46, 48) and spring (47).

3.Remove the bushing (53) from the housing (50) with the screw (54).

4.Remove the screws (60) and lock-washers (61) from the air cylinder (1).

Electric Switch Handle (if equipped)

1.Disconnect the power from the gun.

2.The switch, housing, and cable are not repairable. Replace these parts as a complete assembly.

3.Remove the trigger (56).

4.Loosen the setscrew above the trigger safety. Pull off the handle (55).

5.Remove the four manifold retaining screws (60). Pull the housing (50) and gasket (30) away from the air cylinder (1).

6.Remove the bushing (53) from the housing (50) with the screw (54).

7.Remove the screws (60) and lock-washers (61) from the air cylinder (1).

Reassembly

Air Cylinder Section

1.Lubricate the shaft o-rings (4) and the bearings (5) with grease supplied in the repair kit. Insert o-rings into the air cylinder (1) and air cap (11) cavities.

See Fig. 5.

2.Press the bearings (5) flush into the air cylinder housing and air cap, trapping the o-rings (4).

3.Lubricate and reassemble the piston assembly; piston (10), o-ring (9), dowel pin (7), adjustment shaft (42), o-ring (6), and shaft (3). Use Loctiter Primer N7649 and Loctiter TL242, 243, or equivalent (???blue??? Loctite) when assembling the adjustment shaft (42). Tighten the shaft to 15???20 in???lb (1.7???2.2 NSm). The shaft (3) should hang with some play to be self-aligning in the bearing.

4.Lubricate the air cylinder (1) ID with the grease supplied. Push the piston (10) assembly into the air cylinder.

5.Orient the air inlet manifold (2) (if used) as shown. Match the gasket openings to the air ports.

Fluid Section

1.Lubricate the bearing (21), o-ring (16) and cup seal

(20).Put the o-ring (16) on the bearing. Carefully insert the seal (20) into the bearing recess, with the lips of the o-ring facing into the bearing. Be careful not to damage the seal lips.

2.Push the bearing (21) seal end first into the housing (19). Be sure that the grease hole in the side of the bearing lines up with the grease ports in the housing (19).

3.Holding the bearing (21) in place, push the bearing assembly over the shaft (3).

4.Lubricate the main fluid seal (22) and its cavity in the housing (26). Carefully press the seal, lip-first, into the housing.

5.Push the housing (26) and seal (22) over the shaft

(3)and up against the bearing housing.

6.Apply anti???seize lubricant (Loctite 56765 or equivalent) to the fluid housing screws (23) and loosely install the screws to retain the housings. Do not tighten the screws yet.

7.Insert the gasket (38) and seat (25). These items are reversible and can be installed in either direction.

8.Use Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) when assembling the needle (27) and tighten to 15???20 in???lb (1.7???2.2 NSm).

9.Apply air pressure to the CLOSE port, or to the pneumatic trigger valve if installed. This will align the shaft, seal, and bearing. Tighten the fluid housing screws (23) oppositely and evenly to 40???45 in-lbs (4.5???5 NSm).

10.Install the nosepiece (40) with the PTFE o-ring (39), screw (15), and snuff-back ring (41), if used. The snuff-back ring has an internal bevel on one end which faces into the nosepiece. Tighten the nosepiece screws to 15???20 in-lbs (1.7???2.2 NSm).

Air Valve (if equipped)

1.Insert the spring (51) into the housing (50).

2.Lubricate and install an o-ring (46) into the housing.

3.Install a spacer (52), internal bevel first, into the housing.

4.Lubricate and install two o-rings (46) and the spacer (51).

5.Lubricate and install a spacer (52) with the internal bevel out, and o-ring (46).

6.Lubricate and install o-rings (48) on the spool (49). Insert the spool with the nub facing out.

7.Lubricate the pin (59) and insert it into the guide (58). Screw the guide with o-ring (57) into the housing. Tighten it to 60???70 in-lbs (6.8???7.9 NSm).

8.Orient the gasket (30) to the holes on the air cylinder (1). Screw the air valve assembly to the cylinder with the screws (60) and lock-washers (61). TIghten the screws evenly to 15???20 in-lbs (1.7???2.2 NSm).

9.Screw the bushing (53) to the housing (50) with the screw (54). Tighten the screw to 140???150 in-lbs (15.8???16.9 NSm).

10.Attach the handle (55) with the setscrew.

11.Attach the trigger (56) with the grease fittings (18).

12.Test that the trigger safety works properly.

Electric Switch

1.The switch, housing, and cable are not repairable. Replace these parts as a complete assembly.

2.The switch, housing, and cable assembly are not user serviceable and must be replaced as an assembly.

5 Tighten to 60???70 in-lbs (6.8???7.9 NSm).

6

Screw the bushing (53) to the housing (50) with screw (54). Tighten to 140???150 in-lbs (15.8???16.9 NSm).

Fig. 5

7Apply Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite).

8Apply anti???seize lubricant (Loctite 56765 or equivalent).

8371A

Model 965766

Machine Mount Valve

Stainless steel wetted parts

Model 965786

Automatic Machine Mount Valve

Aluminum wetted parts

Model 243482

Orbiter Mounted Valve

Stainless steel wetted parts

Model 243666

PrecisionFlo Control Valve

Stainless steel wetted parts

*Included in Rebuild Kit 570268.

??? Included in Section Seal Kit 570267.

YReplacement Instruction and Warning Labels are available at not cost.

}Use Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) when assembling this part.

nUse anti???seize lubricant (Loctite 56765 or equivalent) when assembling 965766 and 965786. Use Loctite TL242, 243, or equivalent (???blue??? Loctite) when assembling 243482 and 243666.

WARNING

SKIN INJECTION HAZARD

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure

Relief Procedure on page 8.

Disassembly

1.Relieve all air and fluid pressure.

2.Disconnect the valve from the system.

3.Remove the four nosepiece screws (15), and pull the nosepiece (40) away from the valve. Remove the snuff-back ring (41). See Fig. 5, page 14.

4.Use an 1/8 in. pin punch in the needle hole (A) to unscrew the needle (27). If the shaft (3) spins, insert a dowel pin in the shaft hole (B) to hold it steady, then unscrew the needle (27).

5.Remove the seat (25), gasket (38), and o-ring (39).

6.Remove the two fluid housing screws (23) and remove the fluid housing (26). Remove the primary fluid seal (22) from the fluid housing (26).

7.Pull the bearing/lube housing (19) from the air cylinder (1). Remove the bearing (21), bearing o-ring (16), and secondary fluid seal (20). Remove the grease fittings (18).

8.Remove the C-clip (12) from the back of the air cylinder (1). Push the shaft (3) into the air cylinder to dislodge the air cylinder cap (11). Remove the cap o-ring.

9.Remove the internal C-clip (12). Push the shaft (3) to dislodge the piston (10) assembly from the air cylinder (1).

10.Remove the pin (7), o-ring (9), and piston o-ring

11.Use a 1/4 in. pin punch to knock out the bearings

(5)and o-rings (4).

Reassembly

Air Cylinder Section

1.Lubricate the shaft o-rings (4) and the bearings (5) with grease supplied in the repair kit. Insert o-rings into the air cylinder (1) and air cap (11) cavities.

See Fig. 5.

2.Press the bearings (5) flush into the air cylinder housing and air cap, trapping the o-rings (4).

3.Lubricate and reassemble the piston assembly; piston (10), o-ring (9), dowel pin (7), o-ring (6), and shaft (3). Tighten the jam nut (45) to 15???20 in-lb (1.7???2.2 NSm). The shaft (3) should hang with some play to be self-aligning in the bearing.

4.Lubricate the air cylinder (1) ID with the grease supplied. Push the piston (10) assembly into the air cylinder.

5.Orient the air inlet manifold (2) (if used) as shown. Match the gasket openings to the air ports.

Fluid Section

1.Lubricate the bearing (21), o-ring (16) and cup seal

(20).Put the o-ring (16) on the bearing. Carefully insert the seal (20) into the bearing recess, with the lips of the o-ring facing into the bearing. Be careful not to damage the seal lips.

2.Push the bearing (21) seal end first into the housing (19). Be sure that the grease hole in the side of the bearing lines up with the grease ports in the housing (19).

3.Holding the bearing (21) in place, push the bearing assembly over the shaft (3).

4.Lubricate the main fluid seal (22) and its cavity in the housing (26). Carefully press the seal, lip-first, into the housing.

5.Push the housing (26) and seal (22) over the shaft

(3)and up against the bearing housing.

6.Apply Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) to the fluid housing screws (23) and loosely install the screws to retain the housings. Do not tighten the screws yet.

7.Insert the gasket (38) and seat (25). These items are reversible and can be installed in either direction.

8.Apply Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) to needle (27) and tighten to 15???20 in???lb (1.7???2.2 NSm).

9.Apply air pressure to the CLOSE port, or to the pneumatic trigger valve if installed. This will align the shaft, seal, and bearing. Tighten the fluid housing screws (23) oppositely and evenly to 40???45 in-lbs (4.5???5 NSm).

10.Install the nosepiece (40) with the PTFE o-ring (39), screw (15), and snuff-back ring (41), if used. The snuff-back ring has an internal bevel on one end which faces into the nosepiece. Tighten the nosepiece screws to 15???20 in-lbs (1.7???2.2 NSm).

15

Parts

(Models 243482 and 243666 only)

12

30

1

19

18

9

10

16

38

2625

41

40

31

19

45

6

7

5

4 3

28, 29 20 21

22

39

27

23

40

31

*Included in Rebuild Kit 570268.

??? Included in Section Seal Kit 570267.

YReplacement Instruction and Warning Labels are available at no cost.

}Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) should be used when installing this part.

nAnti???seize lubricant (Loctite 56765 or equivalent) should be used when installing this part.

*Included in Rebuild Kit 570268.

??? Included in Section Seal Kit 570267.

YReplacement Instruction and Warning Labels are available at not cost.

}Loctite Primer N7649 and Loctite TL242, 243, or equivalent (???blue??? Loctite) should be used when installing this part.

nAnti???seize lubricant (Loctite 56765 or equivalent) should be used when installing this part.

Plastic Tubing for Air Signal Lines

Part No. Description

513063 1/8 in. O.D. Nylon

514607 5/32 in. O.D. Nylon

C12509 1/4 in. O.D. Nylon

Air Signal Accessories

551201 Air Cylinder Speed Control 90_ Fitting

1/8 npt(f) inlet, 1/8 npt(m) outlet

Mount on CLOSE port to control opening speed for soft start. Mount on OPEN port to control closing speed for less snuff???back.

104661 Quick Exhaust Valve

1/8 npt(f) inlet and outlet, 1/4 npt(f) exhaust

Used to speed up opening or closing action of the 1K Ultra???Lite Valve

104632 Pump Pilot Valve

1/2 npt (f) line ports, 1/8 npt(f) pilot port

3???way air piloted air valve to turn air powered proportioning pump on with hand gun signal.

4-Way Solenoids and Solenoid

Accessories

626144 Manifold

To direct mount solenoid to 1K Ultra???Lite Valve.

551316 120 Volt ac Solenoid

For use with 626144 Manifold.

551317 24 Volt dc Solenoid

For use with 626144 Manifold.

551347 120 Volt ac Solenoid

Remote mount, 1/8 npt (f) ports

551348 24 Volt dc Solenoid

Remote mount, 1/8 npt(f) ports

551349 120 Volt ac Din Plug

With screw terminals for above solenoids

551350 24 Volt dc Din Plug

With screw terminals for above solenoids

Optional Main Fluid Needle Packings (22)

Part No. Description

551192 Urethane U???Cup with EPDM o???ring spreader

551193 Reinforced PTFE U???Cup with 302 stainless steel spreader

Fluid Nozzles

Zinc-plated steel nozzles, 1/8 npt*

607665 0.125 in. (3.17 mm) 2 in. (51 mm)

161505 0.09 in. (2.28 mm) 2 in. (51 mm)

164799 0.055 in. (1.39 mm) 2-1/8 in. (54 mm)

*Requires a 1/8 npt(f) bushing. Order 168683 Nozzle Bushing.

Nozzles for use with 188253 flange nut.

512135 Plastic Fluid Nozzle

1/4 npt, 0.062 in. (1.57 mm) orifice, 2-1/2 in. (63.5 mm) long

168683 Nozzle Bushing

Zinc-plated steel, 1/8 npt

Kits

949631 Conversion Kit

Pneumatic 4???way valve with housing, handle, and trigger and other parts necessary to convert 965766 or 965786 to a hand held valve.

949632 Conversion Kit

Electric switch style handle kit to convert 965766 or 965786 to a hand held valve.

570267 Seal Kit

With Polymitet main packing (standard)

570268 Rebuild Kit

With Polymitet main packing (standard)

570299 Seal Kit

With PTFE main packing (optional)

570300 Rebuild Kit

With PTFE main packing (optional)