Graco 310692D User Manual

Instructions - Parts

®

Delta Spray

For Airspray, HVLP, and Compliant guns with pressure, siphon, and
gravity feeds.

300 psi (2.1 MPa, 21bar) Maximum Working Fluid Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure

Important Safety Instructions

Read warnings and instructions in this manual.
Save these instructions.

XT Gun

310692D

See page 4 for selection list of models.

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

Copyright 2004, Graco Inc. is registered to I.S. EN ISO 9001

ti4819

II 2 G

Contents

Related Manuals

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Selection Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Gun Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Air Caps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Nozzle, Needle, and Tip Selection . . . . . . . . . . . . . 7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Daily Gun Maintenance . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 34

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 34

Related Manuals

The Delta Spray XT manual is also available in the following languages. See chart below for specific language and
part number.

French

German

Italian

Spanish

Finnish

Danish

310779

310780

310781

310782

310783

310784

Norwegian

Swedish

Dutch

Japanese

Korean

Chinese

310785

310786

310787

310788

310789

310790

Manual Conventions

WARNING

CAUTION indicates a potentially hazardous situation

which, if not avoided, may result in property damage

WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.

Warnings included in instructions generally have a
symbol indicating the hazard. Follow the instructions
and read the hazard section on warning page 3 for
additional information.

2 310692D

or destruction of equipment.

Note

A note indicates additional helpful information.

CAUTION

Warnings

Warnings

The following warnings include general safety information for this equipment. More specific warnings are included in
the text where applicable.

WARNING

FIRE AND EXPLOSION HAZARD - FE CED/IND General

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.

• Ground equipment and conductive objects in work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.

PRESSURIZED EQUIPMENT HAZARD

Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• 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.

• Check equipment daily. Repair or replace worn or damaged parts immediately.

• Do not alter or modify equipment.

• For professional use only.

• Use equipment only for its intended purpose. Call your Graco distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not use hoses to pull equipment.

• Comply with all applicable safety regulations.

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.

• Read MSDS’s to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

310692D 3

Selection Charts

Pressure feed spray guns

Orifice Size

in. (mm) HVLP Compliant Airspray

.030 (0.75) 234647 234693 234636

.042 (1.0) 234648 234694 234637

.055 (1.4) 234649 234695 234638

.070 (1.8) 234650 234696 234639

.086 (2.2) 234651 234640

.110 (2.8) 234652 234641

.042 (1.0) 234653* 234644*

.055 (1.4) 234654* 234645*

.070 (1.8) 234655* 234646*

.030 (0.75) 249856†

.042 (1.0) 249857†

.055 (1.4) 249858†

.070 (1.8) 249589†

Selection Charts

* Guns included with hardened SST needle tips, and nozzles.
† Clear chromate gun body.

Pressure feed spray guns with 1 quart pressure feed cup 239802

Orifice Size

in. (mm) HVLP

.042 (1.0) 234709

.055 (1.4) 234710

.070 (1.8) 234711

.086 (2.2) 234712

Siphon feed spray guns

Spray Gun with 1 quart

Orifice Size

in. (mm)

.055 (1.4) 234695 234642 234732 234718

.070 (1.8) 234696 234643 234733 234719

Spray Gun Only

Compliant Airspray Compliant Airspray

SST cup

4 310692D

Gravity feed spray guns (without gravity cup)

Orifice size

in. (mm) HVLP Compliant Airspray

.055 (1.4) 234658 234685 234662

.070 (1.8) 234659 234686 234663

Gravity feed spray guns with 16 oz. gravity cup

Orifice size

in. (mm) HVLP Compliant Airspray

.055 (1.4) 234713 234721 234705

.070 (1.8) 234714 234722 234706

Selection Charts

Gravity feed spray guns with 3M

Orifice Size

in. (mm) HVLP Compliant Airspray

.055 (1.4) 234681 234689 234677

.070 (1.8) 234682 234690 234678

™

PPS™ gravity cup

310692D 5

Gun Selection

Gun Selection

HVLP Guns

An HVLP gun is a high transfer efficiency gun which lim­its the air pressure at the aircap to 10 psi maximum. In
some areas, an HVLP gun is required for compliance
with environmental standards.

Air Caps

The chart below lists the air caps available for pressure
feed, gravity, and siphon feed guns.

Typical Pattern

Spray Gun

Air Cap

ID

Width*

in. (mm) Gun Feed

Compliant Guns

A compliant gun is a high transfer efficiency gun which
has been tested to have a transfer efficiency greater
than or equal to HVLP guns. The Graco compliant guns
have no restrictions on aircap pressures, but the gun
inlet pressure must remain under 29 psi (21 MPa 2.1
bar) to remain in compliance.

Airspray Guns

Excellent atomization and high production rates typically
with some reduction in transfer efficiency.

Nozzle Orifice

in. (mm)

Part

Number

HVLP 321 15 (381) Pressure Feed .030-.070

(.75-1.8)

HVLP 322 15 (381) Pressure Feed .086 (2.2) 234754

HVLP 323 15 (381) Pressure Feed .110 (2.8) 234755

HVLP 320 12 (305) Gravity/Siphon

Feed

Compliant 006 11 (279) All Models .030-.070

Airspray 315 13 (330) Pressure Feed .030-.070

Airspray 318 10 (254) Pressure Feed .086 (2.2) 234760

Airspray 319 10 (254) Pressure Feed .110 (2.8) 234761

Airspray 317 9 (229) Gravity/Siphon

Feed

Airspray 313 10 (254) Pressure Feed .030-.070

Airspray 316 10 (254) Pressure Feed .030-.070

* Measured with gun nozzle 8 in. (203 mm) from target
surface.

.030-.070

(.75-1.8)

(.75-1.8)

(.75-1.8)

.030-.070

(.75-1.8)

(.75-1.8)

(.75-1.8)

234753

234752

234762

234757

234759

234756

234758

6 310692D

Nozzle, Needle, and Tip Selection

The chart below lists the available nozzle sizes and
required fluid needle and nozzles for the Delta Spray XT
guns. The HVLP, Compliant, and Airspray guns all use
the same nozzle design and fluid needles. When spray­ing high flow rates and high viscosity materials use the
larger nozzle sizes and when spraying light materials or
low flow rates, use the smaller nozzle sizes.

Nozzle
Orifice

in.

(mm) Nozzle

Fluid

Needle

Assy.

Needle

Tip

Needle/Nozzle

Kit

Nozzle, Needle, and Tip Selection

Typi c al

Uses

.030

(.75)

.042
(1.0)

.051
(1.3)

.055
(1.4)

.059
(1.5)

.070
(1.8)

.086
(2.2)

.110
(2.8)

.042
(1.0)

.055
(1.4)

.070
(1.8)

234741 234765 234777 234829 Light

Stains

234742 234765 234777 234830

234743 234767 234778 234831 Low

Viscosity

234744 234767 234778 234832

234745 234767 234778 234833 Medium

Viscosity

234746 234767 234778 234834

234747 234769 234779 234835 High

Viscosity-

Adhesives

234748 234770 234780 234836

234749 234766 234781* 234774 Nozzle

and

234750 234768 234782* 234775

234751 234768 234782* 234776

needle tip

made from

hardened

stainless

steel for

longer life

low flow

high flow

* Use with shut off spring 110402, see parts page 26.

310692D 7

Installation

Top and bottom feed guns

Installation

F

IG. 1

H

ti4819

G

F

E

D

C

A

B*

Key:

A Delta Spray XT Gun
B Fluid Inlet, 3/8 npsm (R3/8-19)*
CAir Inlet
D Air Hose

recommended 5/16 in. (7.9 mm) ID hose
optional 3/8 in. (9.5 mm) ID hose

E Air Shutoff Valve
F Air Regulator
GAir Filter
H Air Supply Line

*Pressure and siphon feed guns will have bottom feed
insert. Gravity feed guns will have a top feed insert.

8 310692D

Setup

Setup

Flushing the gun

Flush the spray gun before putting any paint
through the gun.

WAR NING

Read warnings, page 3. Follow Top and bottom feed
guns installation, page 8.

1. To flush the gun, use a solvent that is compatible
with paint to be sprayed. Hold a metal part of the
gun firmly to a grounded metal pail. Trigger the gun
to flush solvent through gun.

3. Install an air filter (G). See F

4. Use a 5/16 inch (7.9 mm) I.D. air hose to minimize
excessive pressure drop in the hose.

5. Connect the air hose (D) to the 1/4 npsm gun air
inlet (C).

FIG. 3

6. Connect the other end of the air hose (D) to a regu­lated air supply line.

IG. 1.

C

D

ti4837a

D

ti4836a

IG. 2

F

ti4838a

IG. 4

F

Connecting the air line

2. Install an air pressure regulator (F). See FIG. 1.

310692D 9

Setup

Connecting the fluid hose

(Pressure feed guns only)

1. To control fluid pressure to the gun, install a fluid
regulator on the fluid line.

2. Connect the fluid hose (J) to the gun fluid inlet (B)
3/8-18 npsm [R 3/8-19] compound thread.

B

J

ti4854a

IG. 5

F

3. Connect the other end of the fluid hose (J) to a regu­lated fluid supply line.

Connecting the fluid supply

For packages that include fluid cups, use the following
chart for installation instructions.

Cup attachment Instruction Manual

3M PPS 310693

Gravity Cup 308792

Siphon Cup 308792

Pressure Cups 308791

Positioning the Air Cap

Rotate the air cap as needed to achieve the desired
spray pattern direction. To create a round pattern, turn
the pattern air off by turning the pattern adjustment knob
(25) fully clockwise. See F

IG. 7.

F

ti4839a

IG. 6

10 310692D

Setup

Adjusting the Spray Pattern

1. To achieve full fan pattern, open the pattern adjust­ment valve (25) by turning the knob fully counter­clockwise.

(Close)

(Open)

25

ti4841a

F

IG. 7

2. Trigger gun and adjust gun air pressure:

Hose Inlet Air

Gun Inlet Air

Pressure

PSI (kpa, bar)

HVLP Gravity 29 (210, 2.1) 50 (345, 3.4)

HVLP

40 (280, 2.8) 72 (480, 4.8)

Pressure

Compliant 29 (210, 2.1) 41 (280, 2.8)

Airspray

40 (280, 2.8) 52 (345, 3.4)

gravity feed

Airspray

40 (280, 2.8) 56 (410 4.1)

pressure feed

Pressure

PSI (kPa, bar)

25 ft 5/16 in.

(7.9 mm) ID hose

3. To establish the correct fluid flow, turn the fluid
adjustment knob (21) counterclockwise until no
restriction of the trigger movement is felt, then turn
out another half turn. When the knob is turned far
enough, the trigger should be able to touch the gun
handle when the gun is triggered.

(Open) (Close)

21

ti4840a

IG. 8

F

4. Pressure feed only: Adjust fluid pressure to achieve
desired fluid flow rate

5. To reduce fluid flow, turn the fluid adjustment knob
(21) clockwise.

• If the fluid adjustment knob is turned clockwise
all the way, the gun will emit only air.

• If you cannot achieve the correct fluid flow with
the fluid adjustment knob, a different sized noz­zle may be necessary. For smaller fluid flow,
use the next size smaller nozzle. For a larger
fluid flow, use the next size larger nozzle.

WARINING

(Open) (Close)

PRESSURIZED EQUIPMENT HAZARD

To avoid injury, never open the fluid adjustment
knob (21) beyond the one half turn indicated in
step 3 in Adjusting the Spray Pattern. If the red
band on the knob stem (21) is visible, the knob is
not adjusted correctly and could result in serious
injury. Repeat step 3 in Adjusting the Spray

F

IG. 9

21

ti4840a

Pattern.

6. Spray a test pattern. Evaluate the spray pattern size
and atomization.

310692D 11

Setup

7. To achieve a narrow spray pattern, turn pattern
adjustment valve (25) clockwise.

(Close)

(Open)

25

ti4841a

IG. 10

F

8. For HVLP only: To measure the aircap atomizing
pressures, use the accessory aircap verification kit.
See Accessories on page 30.

9. To improve atomization, reduce the fluid flow rate.
Increasing the air pressure can improve atomization
but may result in poor Transfer Efficiency (TE) or
non-compliant operation.

• For gravity feed HVLP guns, at 29 psi (200 kPa,

2.0 bar) gun inlet air pressure, the pressure at
the aircap will be 10 psi (70 kpa, 0.7 bar).

• For pressre feed HVLP guns, at 40 psi (280
kPa, 2.8 bar) gun inlet air pressure, the pres­sure at the air cap will be approximately 10 psi
(70 kpa, 0.7 bar).

• For HVLP guns, local laws may limit the maxi­mum automatic air pressure to 10 psi (70 kPa,

0.7 bar) at the air cap for HVLP compliance.
The accessory Air Cap Verification Kit is avail­able to measure the atomizing pressure at the
air cap. See Accessories on page 30.

• For Compliant guns, to maintain compliant
operation (TE equal to HVLP) the gun inlet
pressure must not exceed 29 psi.

12 310692D

Operation

Operation

Pressure Relief Procedure

WAR NING

Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser­vicing, or transporting equipment. Read warnings,
page 3.

1. Turn off air and fluid supply.

2. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.

1. To achieve the best results when applying fluid:

• Keep the gun perpendicular and 6 to 8 inches
(150 to 200 mm) from the object being sprayed.

• Use smooth, parallel strokes across the surface
to be sprayed with 50% overlap.

Incorrect

ti4843a

Correct

ti4836a

F

IG. 11

Applying the Fluid

When using the HVLP spray gun, instead of a conven­tional airspray gun, you may need to use a slightly
slower hand movement and make fewer passes with the
gun to coat a part. This is due to the reduced spray
velocity produced by lower HVLP air pressures, along
with a larger fluid particle size because there is less air
to blow off solvents than what is produced by conven­tional airspray. Take care to avoid runs or sags as you
spray.

ti4842a

FIG. 12

310692D 13

Daily Gun Maintenance

Daily Gun Maintenance

WAR NING

Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser­vicing, or transporting equipment. Read warnings,
page 3.

CAUTION

Methylene chloride with formic or propionic acid is not
recommended as a flushing or cleaning solvent with
this gun as it will damage aluminum and nylon compo­nents.

CAUTION

Solvent left in gun air passages could result in a poor quality paint finish. Do not use any cleaning method which
may allow solvent into the gun air passages.

Do not point the gun up while cleaning it.

Do not wipe the gun with a cloth soaked in solvent;
ring out the excess.

Do not immerse the gun in solvent.

General maintenance

✓ Relieve the pressure.

✓ Clean the fluid and air line filters daily.

Do not use metal tools to clean the air cap holes as
this may scratch them; scratches can distort the
spray pattern.

✓ Check for any fluid leakage from the gun and fluid

hoses.

✓ Flush the gun before changing colors and whenever

you are done operating the gun.

14 310692D

Daily Gun Maintenance

Flushing and cleaning

Gravity and Siphon Feed Guns

1. For packages that include fluid cups, use the follow­ing chart for flushing and cleaning instructions.

Cup attachment Instruction Manual

™

3M

Gravity Cup 308792

Siphon Cup 308792

Pressure Cups 308791

2. Continue to step 8 to perform daily cleaning of the
Delta Spray XT gun.

Pressure Feed Guns

WAR NING

PPS

™

310693

3. Connect the solvent supply hose to the gun.

ti4854a

FIG. 14

4. Hold metal part of gun against a grounded metal
container, trigger, and flush the gun with solvent
until all traces of paint are removed from the gun
passages.

Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser­vicing, or transporting equipment. Read warnings,
page 3.

1. Relieve the pressure, page 13.

2. Disconnect the fluid supply hose and air supply
hose from the gun.

ti4944a

ti4836a

IG. 15

F

5. Turn off the solvent supply.

6. Relieve the pressure.

7. Disconnect the solvent supply hose from the gun.

ti4944a

F

IG. 16

ti4945a

F

IG. 13

310692D 15

Daily Gun Maintenance

8. Remove the air cap retaining ring assembly (15)
and air cap (14).

9. Trigger the gun while you remove the fluid nozzle
(12) from the gun with the gun tool (28)

14, 15

12

28

ti4844b

F

IG. 17

CAUTION

Trigger the gun whenever you tighten or remove the
nozzle. This keeps the needle seat away from the
nozzle seating surface and prevents the seat from
being damaged.

12. Scrub the air cap retaining ring, air cap, and fluid
nozzle with the soft-bristle brush.

ti4847a

FIG. 20

• To clean out air cap holes, use a soft imple­ment, such as a toothpick, to avoid damaging
critical surfaces.

• Clean the air cap and fluid nozzle daily, mini­mum. Some applications require more frequent
cleaning.

• Do not soak the air cap retaining ring in solvent
for prolonged periods of time.

10. Dip the end of a soft-bristle brush into a compatible
solvent. Do not continuously soak the brush's bris­tles with solvent and do not use a wire brush.

ti4845a

F

IG. 18

11. With the gun pointed down, clean the front of the
gun, using the soft-bristle brush and solvent.

13. Trigger the gun while you install the fluid nozzle (12)
with the gun tool (28). Tighten the nozzle securely to
40 in-lb (4.5 N•m) to obtain a good seal.

28

14,
15

12

ti4844b

F

IG. 21

14. Install the air cap retaining ring assembly (15) and
air cap (14).

ti4846a

FIG. 19

16 310692D

Daily Gun Maintenance

15. Dampen a soft cloth with solvent and wring-out the
excess. Point the gun down and wipe off the outside
of the gun.

ti4848a

F

IG. 22

16. After cleaning the gun, lubricate the following parts
with lubricant 111265 daily:

• Fluid adjustment knob threads

• Trigger pivot pin

• Fluid needle shaft

Lubricate

Lubricate

ti4819a

FIG. 23

310692D 17

Troubleshooting

WAR NING

Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser­vicing, or transporting equipment. Read warnings,
page 3.

Problem Cause Solution

Fluid flow is fluttering while spraying. 1. Fluid nozzle not tight enough.

2. Fluid filter clogged.

3. Fluid source empty.

Fluid flow fades while spraying high
viscosity fluids.

Pattern becomes off-set or heavy on
ends.

Gun fluid pressure is too high with
gun triggered (cannot achieve
desired flow rate).

Using a low fluid pressure setting, the
fluid flow is too high, making it neces­sary to restrict needle travel to
reduce fluid flow.

Fluid system will not operate at low
enough fluid pressure [below 10 psi
(70 kPa, 0.7 bar)].

1. Air hose size is too restricted for
higher air flow being used.

1. Air cap horn holes plugged or
damaged.

2. Nozzle tip dirty or damaged.

Using needle/nozzle kit with too small
orifice.

Using needle/nozzle kit with too large
orifice.

There is no fluid regulator, or air reg­ulator or pressure pot is not sensitive
enough at low pressures.

Troubleshooting

1. Tighten fluid nozzle to 40 in-lb
(4.5 N•m).

2. Check fluid filter.

3. Refill

1. Use 5/16 in. (7.9 mm) I.D. air
hose if the hose is 25 ft. (7.6 m)
long. If longer hose is needed,
use a 3/8 in. (9.5 mm) I.D. hose.

1. Clean air cap horn holes with
non-metallic item such as a
toothpick, or replace air cap.

2. Clean or replace nozzle.

Use needle/nozzle kit with larger ori­fice.

Use needle/nozzle kit with smaller
orifice.

Add low pressure fluid regulator, or
add more sensitive low pressure air
regulator on pressure pot.

18 310692D

Service

Service

Replacing the air and fluid
packings

Tools needed:

• Gun Tool - provided

• Packing Installation Tool - provided

• Adjustable Wrench

• Screw Driver

• Lubricant part no. 111265; see Accessories, page
28, to order

• Compatible Solvent

• Order Repair Kit 234828. See Parts starting on
page 25.

• Clean parts with a solvent that is compatible
with the parts and the fluid being sprayed.

• Lightly lubricate the parts indicated with lubri­cant 111265.

2. Flush the spray gun, page 9.

3. Remove the air cap retaining ring (15A), seal (15B),
and air cap (14).

15B

15A

14

FIG. 24

4. Trigger the gun while you remove the fluid nozzle
(12) with the gun tool (28). See F

5. Remove the screw (11), pin (17), wave washer (18),
and trigger (10).

17

28

12

ti4849b

IG. 24.

Disassembling the gun

WAR NING

Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser­vicing, or transporting equipment. Read warnings,
page 3.

1. Relieve the pressure, page 13.

IG. 25

F

18

11

10

ti4828a

310692D 19

Service

6. Loosen the hex nut (9) with the gun tool (28).

9

ti4978a

F

IG. 26

7. Remove the spray housing (2A) and insert (4).

2A

4

Replacing the spray housing o-rings and
packings

1. With the spray housing (2A) removed from the insert
(4), use a mechanical pick to remove the o-ring (2B)
from the housing (2A).

4

ti4829b

IG. 28

F

2B

2A

36

IG. 27

F

2. Remove o-ring (34) from the insert (4).

O-ring (2B) is slightly larger than o-ring (34).

3. Install a new o-ring (34) into the insert (4). Install a
new o-ring (2B) into the housing (2A).

NOTE: To ease o-ring installation, place the insert
(4) into the spray housing (2B) to plug the end.
Install one end of the o-ring into the groove in the
housing, then press the rest of the o-ring into place.

ti4830b

20 310692D

Service

4. Unscrew the packing screw (8) from the insert (4)
with the gun tool (28).

5

6

7

4

F

IG. 29

8

ti4834a

5. Using a mechanical pick, push the three fluid pack­ings (5, 6, 7) out of the insert (4). Be careful not to
damage the insert. Discard the old fluid packings.

6. Place the new fluid packings (5, 6, 7) and packing
screw (8) onto the needle (13). Note the orientation
of the parts.

5

6

8

7

13

Replacing the pattern adjustment valve
packings

1. Unscrew the pattern adjustment valve assembly (25
A-D).

25B

25A

25D

F

IG. 31

2. Using a needle nose pliers, remove the retaining
ring (25D) and unscrew the pattern adjustment
valve (25C).

3. Using a mechanical pick, remove the u-cup pack­ings (25B) from the pattern adjustment nut (25A).
Be careful not to damage the seal surface or the
nut's internal threads.

25C

ti4857a

4

4. One at a time, install the new u-cup packings (25B)
with the packing installation tool (29); the u-cup lips
must face toward the tool.

29

25A

25B

F

IG. 32

F

IG. 30

ti4834a

5. Push each u-cup packing (25B) into the pattern

7. Insert the fluid needle (13) into the back of the insert
(4) to install the fluid packings (5).

8. Tighten the packing screw (8) just enough to hold
the packings (5) in the insert (4). The needle (13)
must move freely. Remove the needle.

adjustment nut (25A) until a definite snap is felt.

6. Lubricate the pattern adjustment valve (25C)
threads and install the valve into the nut (25A).
Install the retaining ring (25D), then back out the
pattern adjustment valve as far as the retaining ring
allows it to go.

310692D 21

Service

Replacing the fluid valve packings

1. Remove the fluid adjustment knob (21) and fluid
spring (23).

2. Pull the fluid needle (13) out the back of the gun.

16

F

IG. 33

3. Remove the fluid valve nut (19), air valve spring
(22), and air valve assembly (26). Discard the air
valve assembly. Using a mechanical pick, remove
the u-cup packing (16) from the gun body.

26 13 21

23 22 37 20 19

ti4850a

4. Place the new u-cup packing (16) on the packing
installation tool (29), with the u-cup lips facing the
tool as shown.

16

29

ti4851a

IG. 34

F

5. Push the packing (16) into the back of the gun until
a definite snap is felt.

6. Using a mechanical pick, remove the u-cup packing
(20) and spacer (37) from the fluid valve nut (19). Be
careful not to damage the seal surface or the nut's
internal threads.

7. Using the packing installation tool (29), install the
new u-cup packings (20) into the fluid valve nut (19).
The u-cup lips must face toward the tool as shown.
This will help apply even pressure to the u-cup lips
and avoid damaging them.

19

20

ti4852a

IG. 35

F

8. Push the u-cup packings (20) into the fluid valve nut
(19) until a definite snap is felt.

22 310692D

Service

Reassembling the gun

To ensure proper alignment of the parts, assemble
parts in the exact order given in the following steps.

1. Slide the insert (4) into the spray housing (2A), and
install them onto the gun body (1). Align the housing
with the slot and lip (A) on the gun body.

2A

4

F

IG. 36

2. Tighten the hex nut (9) onto the insert (4) hand-tight,
then loosen the nut about one turn so the insert (4)
and spray housing sit loosely in the gun body.

A

ti4830a

sary. If replacing needle tip, use low strength thread
adhesive on needle tip threads.

4. Lubricate the outside of the new air valve assembly
(26) and place it on the fluid needle (13), against the
nut (B). See F

IG. 38.

5. Install the fluid needle (13) and the air valve assem­bly (26) into the back of the gun.

13

26

B

ti4853a

FIG. 38

6. With u-cup (20) and spacer (37) already installed
into fluid nut (19), point gun down and install spring
(22) and fluid nut (19). Tighten the fluid nut (19) to
125-135 in-lb (14-15 N•m).

21

9

23 22 37 20 19

ti4850a

F

IG. 37

ti4978a

F

IG. 39

3. Check the fluid needle (13) for damage or excessive
wear. Replace needle tip or entire needle if neces-

7. Install needle spring (23). Install fluid adjustment
knob (21).

310692D 23

Service

8. Install the trigger (10), pivot pin (17), wave washer
(18), and screw (11). Torque the screw to 20-30 in-lb
(2.3-3.4 N•m).

17

18

11

10

ti4828a

F

IG. 40

9. Apply a thin film of lubricant to the fluid nozzle seat
and threads.

12. Install the pattern adjustment valve assembly
(25A-D). Torque the nut (25A) to 125-135 in-lb
(14-15 N•m).

25A-D

ti4832a

IG. 42

F

13. Tighten the packing screw (8) by turning the screw
in until it touches the fluid packings, then tighten one
full turn to pre-set the packings. Loosen the screw,
then turn it in until it touches the packings again.
Tighten the screw 1/12 turn more (equal to half the
distance between points on the hex head). See F

IG.

41.

10. Trigger the gun while you install the fluid nozzle (12)
with the gun tool (28). Torque the nozzle securely to
40 in-lb (4.5 N•m).

28

12

8

9

ti4849i

F

IG. 41

11. Tighten the hex nut (9) securely to 125-135 in-lb
(14-15 N•m).

14. Trigger the gun to test the needle movement. If the
needle does not return after the trigger is released
or is slow in returning, loosen the packing screw (8)
until the needle returns freely.

15. Replace seal (15B). Install the air cap (14), air cap
retaining ring (15A), and seal (15B). Hand-tighten
the ring.

14 15A 15B

ti4980a

IG. 43

F

16. Make sure the gun fluid packings are sealing prop­erly by spraying solvent at low pressure before fully
pressurizing the gun with the fluid to be sprayed.

17. If the fluid packings leak, tighten the packing screw
(8) slightly and retest until the packings and fluid
needle seal completely.

24 310692D

Service

310692D 25

Parts

Airspray, HVLP, and Compliant Guns

With Pressure, Gravity, and Siphon Feeds

Parts

15A 15B* 14 12 17 1

8

7*

6*

5*

25D

16*

25B*

26*

35

25A

13A

23 22 20* 19 21

25C

13

37*

ti4831b

9

4†36*2A2B*

11

29

28

10

† Insert (4) appears for top or
bottom feed depending on application.

24

ti4821a

26 310692D

Airspray, HVLP, and Compliant Guns

With Pressure, Gravity, and Siphon Feed

Parts

Ref.
No Part No. Description Qty.

1 234740 BODY, gun 1
2 SPRAY HOUSING ASSY., includes

items 2A-B; For part number, see

chart below
2A HOUSING, spray; 1
2B* O-RING 1
4 15D661 INSERT, fluid; pressure and siphon

feed guns only

15C463 INSERT, fluid; gravity feed guns

only
5* 188494 PACKING, spreader 1
6* 188495 PACKING, u-cup 1
7* 192351 PACKING, spacer 1
8 192352 SCREW, packing 1
9 192348 NUT, hex; 1/2 - 20 UNF 1
10 15D993 TRIGGER 1
11 203953 SCREW, trigger lock 1
12★ NOZZLE, fluid; 1
13★ NEEDLE ASSY.; includes item 13A 1
13A★ TIP, needle 1
14★ AIR CAP 1
15 239953 RETAINING RING ASSY., includes

items 15A-B
15A RING 1
15B* SEAL 1
16* 188493 U-CUP 1
17 192272 PIN, pivot 1
19 15C468 NUT, fluid valve 1
20* 110453 U-CUP 1
21 15E245 KNOB, fluid adjustment 1
22 114069 SPRING, air valve 1
23 114072 SPRING, needle 1

110402 SPRING, needle; for SST needle

tips
24 195065 INLET, air; 1

15C518 INLET, air;

HVLP gravity feed guns only

Ref.
No Part No. Description Qty.

25 234379 VALVE ASSY., pattern adjustment;

1

234297 VALVE ASSY., pattern adjustment;

25A 15C468 NUT, pattern adjustment 1

1

25B* 110453 U-CUP 2
25C 15C877

1

1

1

1

15C469
25D 114068 RING, retaining 1
26* 234363 AIR VALVE ASSY. 1
28 15E581 TOOL, gun 1
29 192282 TOOL, seal installation 1
35 15C480 WAVE WASHER 1
36* 113137 O-RING 1
37* 15E246 SPACER 1

★ See chart on pages 6 and 7 for part number.

* Parts included in Kit 234828 (purchase separately).

HVLP Gravity Feed 234632

HVLP Pressure Feed 234591

Compliant Pres-

sure/Siphon Feed

Compliant Gravity Feed 234634

Airspray Pres-

sure/Siphon Feed

Airspray Gravity Feed 234633

includes items 25A-D; airspray
guns only

includes items 25A-D; compliant
and HVLP guns only

VALVE; Airspray gun
VALVE; HVLP and Compliant guns

Spray Housing

Gun

Assembly

234635

234592

1

1

1

310692D 27

234788 Spatter or Specking Airspray Gun

Parts

25

15A 15B*

14 12

37

2A2B*

36*

17

1

13

26*

16*

8

7*

6*

5*

35

23 22

20* 19 21

9

4

24

11

ti3652482aa

29

10

28

ti4831b

28 310692D

234788 Spatter or Specking Airspray Gun

Parts

Ref.
No Part No. Description Qty.

1 234740 BODY, gun 1
2 234592 SPRAY HOUSING ASSY., includes

items 2A-B;
2A HOUSING, spray; 1
2B* O-RING 1
4 15D661 INSERT, fluid; 1
5* 188494 PACKING, spreader 1
6* 188495 PACKING, u-cup 1
7* 192351 PACKING, spacer 1
8 192352 SCREW, packing 1
9 192348 NUT, hex; 1/2 - 20 UNF 1
10 15D993 TRIGGER 1
11 203953 SCREW, trigger lock 1
12 15E139 NOZZLE, fluid 1
13 239644 NEEDLE ASSY. 1
14 196109 AIR CAP 1
15 239953 RETAINING RING ASSY., includes

items 15A-B
15A RING 1
15B* SEAL 1

Ref.
No Part No. Description Qty.

16* 188493 U-CUP 1
17 192272 PIN, pivot 1

1

19 15C468 NUT, fluid valve 1
20* 110453 U-CUP 2
21 15E245 KNOB, fluid adjustment 1
22 114069 SPRING, air valve 1
23 114072 SPRING, needle 1
24 195065 INLET, air 1
25 15E138 CAP 1
26* 234363 AIR VALVE ASSY. 1
28 15E581 TOOL, gun 1
29 192282 TOOL, seal installation 1
35 15C480 WAVE WASHER 1
36* 113137 O-RING 1
37 196111 BAFFLE 1

* Parts included in Kit 234828 (purchase separately).

1

310692D 29

Accessories

Accessories

Cleaning Brush 105749

For use in cleaning gun

Lubricant 111265

One 4 oz. (113 gram) tube sanitary (non-silicone) lubri­cant for fluid seals and wear areas.

Air Control Valve Kit 243670

Install on the gun air inlet to control both the atomizing
air and the pressure in the spray gun cup (if used).

1/4 npsm x 1/4-19 BSPT.

Air Control Valve 234784

Comes with gauge. Allows for air pressure adjust-

ment at gun inlet.

HVLP Air Pressure Verification
Kit

For use in checking HVLP air cap atomizing air pressure
at various supply air pressures. Not to be used for actual
spraying.

Install the kit air cap on the gun. Turn on the air to the
gun, then trigger the gun and read the atomizing air
pressure on the gauge.

30 310692D

Accessories

Gun Air Regulator Assy. 235119

0-100 psi (0-0.7 MPa, 0-7 bar) air regulator to control air
pressure to gun.

Installing the gun air regulator adds a pressure
drop that could limit the air cap pressure.

Gravity Cup

For use with gravity feed gun. Nylon cup, 304 stainless
steel 3/8 npsm(f) fluid inlet fitting, fluid filter cartridge
included.

Part Number Size

239714 16 oz. (474 cc)

239715 8 oz. (237 cc)

Gravity Cup Holder Bracket
192407

Fits both gravity cup sizes.

SST Pressure Cup Kit 239802
with single air regulator

1 qt. (0.95 liter) capacity, 304 stainless steel cup.
Includes a pressure relief valve and a single air regula-

tor and gauge.

1 Quart Remote SST Pressure
Cup 239804

1 qt. (0.95 liter) capacity, 304 stainless steel cup.

Includes air pressure regulator and gauge, 4 ft. (1.2 m)
length air and fluid hose with 1/4 npsm(f) swivel ends,

pressure relief valve, and rigid hook handle.

310692D 31

Accessories

SST Pressure Cup Kit 239803
with double air regulator

1 qt. (0.95 liter) capacity, 304 stainless steel cup.
Includes a pressure relief valve, a 0-100 psi (0-0.7 MPa,
0-7 bar) air regulator for gun atomization, and a 0-15 psi
(0-104 kPa, 0-1.0 bar) air regulator for the 1 qt. pressure

cup supply air.

Installing the pressure cup kit adds a pressure
drop that could limit the air cap pressure.

3M™ PPS™ Paint Preparation
System

Gravity Feed 234837

Siphon Feed 234773

For use with gravity feed gun.Includes PPS cup, liner,
and adapter. See instruction manual 310693 for more

information.

Gravity Feed

Siphon Feed

Disposable Polythylene Cup
Liners

Paint and solvent resistant. 40 Liners per box.

112490 - 1 Quart Size
112491 - 2 Quart Size

Fluid Shut Off Spring 110402

Replaces standard spring 114072 when using SST nee­dle tips, and provides increased shut off force in difficult
applications.

32 310692D

Technical Data

Technical Data

Category Data

Maximum Working Fluid Pressure 300 psi (2.1 MPa, 21 bar)
Maximum Working Air Pressure 100 psi (0.7 MPa, 7 bar)
Maximum Compliant Inbound Air Pressure 29 psi (200 kPa, 2.0 bar)
HVLP Gravity/Siphon Feeds 29 psi (200 kPa, 2.0 bar)
HVLP Pressure Feed 40 psi (280 kPa, 2.8 bar)
Fluid and Air Operating Temperature Range 32°F to 109°F (0°C to 43°C)
Weight 22.3 oz. (632 g)
Air Inlet 1/4-18 npsm
Fluid Inlet 3/8 npsm
Wetted Parts 304, 303,17-4 PH Stainless Steel, PEEK, Acetal, Ultra

High Molecular Weight Polyethylene

Noise Data*

Sound Pressure
Sound Power

Air Consumption Gravity/Siphon Feed:

Airspray at 50 psi inlet
HVLP at 29 psi inlet
Compliant at 29 psi inlet

Air Consumption Pressure Feed:

Airspray at 40 psi inlet
HVLP at 40 psi inlet
Compliant at 29 psi inlet

84.4 Db(A)

94.0 Db(A)

14.1 scfm

15.5 scfm

11.2 scfm

12.5 scfm

21.0 scfm

11.2 scfm

*All readings were taken with the gun controls fully open and with 40 psi (280 kPa, 2.8 bar). Sound pressure was
tested to CAGI-PNUEROP-1969. Sound power was tested to ISO 3744-1981.

310692D 33

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. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance
of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.

Phone: [phone] or Toll Free: 1-800-328-0211, Fax: [phone]

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

MM 310692

Sales Office: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441

www.graco.com

Printed in USA 310692D

8/2005