INSTRUCTIONS–PARTS LIST

This manual contains important warnings and information.

READ AND RETAIN FOR REFERENCE

STAINLESS STEEL

Air Regulated Pressure Cups

See the Technical Data on page 2 for Maximum Air Pressures

308–257

Rev B

Supersedes A

Single Air Regulator Pressure Cup

Part No. 235–373

Remote Air Regulated Pressure Cup

Part No. 235–054

Double Air Regulator Pressure Cup

Part No. 235–374

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

COPYRIGHT 1992, GRACO INC.

Table of Contents

Technical Data

Accessories

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance

Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8

9

4

6

2

3

Graco Phone

Numbers

TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you: 1–800–367–4023 Toll Free

FOR TECHNICAL ASSIST ANCE, service repair information or assistance regarding the application of

Graco equipment: 1–800–543–0339 Toll Free

Technical Data

Single Air Regulator Pressure Cup 235–373

Maximum Outlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 psi (0.8 bar)

Maximum Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 psi (7 bar)

Double Air Regulator Pressure Cup 235–374

Cup Regulator Maximum Outlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 psi (0.8 bar)

Gun Regulator Maximum Outlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100 psi (7 bar)

100 psi (7 bar)

Remote Air Regulated Pressure Cup 235–054

Maximum Outlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 psi (0.8 bar)

Maximum Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 psi (7 bar)

SST One Quart Pressure Cup

Maximum Working Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 psi (1.4 bar)

Pressure Cup Material

Cup and Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Stainless Steel

Cup Yoke and Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plated Aluminum

Cup Fluid Nut Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8–18 npsm; R3/8–19 compound thread

Regulator Swivel Nut Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4–18 npsm; R1/4–19 compound thread

Weight

Pressure Cup Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 lb. 7 oz. (643 g)

Cup with Single Air Regulator* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 lb. 3 oz. (1004 g)

Cup with Double Air Regulator* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 lb. 7 oz. (1110 g)

Remote Cup with Air Regulator Assembly* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 lb. 8 oz. (1127 g)

Remote Cup with Air Regulator Assembly and Hoses* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 lb. (1813 g)

Gun Air Regulator* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 oz. (224 g)

* Weight without gun

Quick Disconnect Coupler 208–536

1/4 npt(f), zinc-plated brass

Quick Disconnect Pin 169–970

1/4 npt(m), zinc-plated steel

169–970

Replaces nipple

162–453

208–536

Accessories

Spray Gun Air Regulator Assembly 235–119

100 psi (7 bar) Maximum Outlet Pressure

150 psi (10 bar) Maximum Inlet Pressure

For use on a spray gun with a 1/4–18 npsm air fitting.

Includes the following parts:

0697

1

2

3

Ref.

No.

Part No.

Description

4

162–453 NIPPLE, 1/4 npt x 1/4 npsm

156–823 SWIVEL UNION, 1/4 npt

110–436 GAUGE; 0-100 psi

(0-7 bar) range

110–438 REGULATOR; 0-100 psi

(0-7 bar) range

3

1

Pressure Cup Single Air Regulator Assembly

235–375

12 psi (0.8 bar) Maximum Outlet Pressure

100 psi (7 bar) Maximum Inlet Pressure

For use with stainless steel one quart cup and spray gun. See page for 9 parts.

2

Qty.

1

1

1

1

01724

Pressure Cup Double Air Regulator Assembly

235–376

12 psi (0.8 bar) Cup Regulator Maximum Outlet Pressure

100 psi (7 bar) Gun Regulator Maximum Outlet Pressure

100 psi (7 bar) Maximum Inlet Pressure

For use with stainless steel one quart cup and spray gun. See page 10 for parts.

4

01730

Pressure Cup Replacement Parts

Ref.

No.

Part No.

Description Qty.

101 112–219 GASKET, expanded polyethylene 1

102 112–220 CUP, 304 stainless steel 1

101

102

01723 01960

Setup

Install the Elbow Fitting and Tubing

NOTE: The One Quart Pressure Cup is not sold separately. The elbow fitting for the top of the cup is included with the Pressure Cup Air Regulator Assemblies.

Fill the Pressure Cup

1. Push the clamp lever (A) fully to the unclamped position, against the yoke (C). See Fig. 1.

1. Apply anaerobic pipe sealant to the tapered pipe threads of the elbow fitting, then install it wrench tight on the cup lid. See Fig. 2 and Fig. 3.

2. Twist the cup (D) counterclockwise to disengage the yoke hook from the cup extended pins (M).

2. Carefully cut the tubing (squarely) to the length desired. The recommended tubing length is 7 inches (179 mm). Keep the extra tubing for future replacement.

3. Remove the cup lid (B) and fill the cup with the fluid to be sprayed.

3. Push the tubing firmly into the appropriate fittings.

NOTE: To disconnect the tubing, push down on the fitting’s outer ring and pull on the tubing.

4. Twist the cup (D) clockwise to engage the yoke (C) hook, then push the clamp lever (A) fully to the clamped position. Use your thumbs to force the clamp lever into position; do not use wrenches or tools to move it.

Part No. 235–373 & 235–374:

Install the Gun on the Cup

1. Install the gun fluid inlet into the cup swivel fitting

(E). See Fig. 2.

2. Install the gun air inlet into the air regulator fitting

(F).

A

B

C

M

Part No. 235–054: Assemble the Remote

Air Regulated Pressure Cup

1. Install the air regulator assembly into the cup swivel fitting. See Fig. 3.

D

2. Connect the air supply line (G) to the air regulator fitting.

3. Connect the air line (H) to the gun air inlet.

4. Connect the fluid line (J) to the gun fluid inlet.

Fig. 1

1

2

Apply anaerobic pipe sealant to elbow fitting threads. Install wrench tight.

Cut tubing to length desired.

E

1

Setup

1

E

F

F

2

Fig. 2

Part No. 235–373

Single Air Regulator Pressure Cup

01725

G

2

Part No. 235–374

Double Air Regulator Pressure Cup

01726

H

Part No. 235–054

Remote Air Regulated Pressure Cup

Fig. 3

1

J

02237

Operation

WARNING

Never exceed 20 psi (1.4 bar) static air pressure to the cup. Exceeding the maximum working pressure of the cup or any other system component could cause component rupture, which could result in serious injury and property damage.

K

L

11

WARNING

Pressure Relief Procedure

To reduce the risk of serious injury, including splashing in the eyes or on the skin, always follow this procedure after you stop spraying, when checking or servicing any part of the spray system, before disconnecting the gun, air regulator, or pressure cup and before removing a pressure cup for refilling or cleaning.

1. Turn off the air and fluid supply to the gun.

2. Trigger the gun into a grounded metal waste container to relieve fluid pressure.

3. Pull the regulator pressure relief valve (11) cap out to relieve the cup pressure. See Fig. 4.

CAUTION

Do not rotate the pressure relief valve cap while pulling it out to relieve pressure. Rotating the pressure relief valve cap out of its original position may create excessive air leakage. If air leakage occurs, rotate the cap until the relief valve seats properly. If the original sealing position cannot be found, leave the cap undisturbed for a minimum of 12 hours to allow the PTFE seat to create a new seal.

Setting the Cup Air Pressure

1. Pull up the cup regulator adjustment knob lock-ring

(L); this allows the knob (K) to turn. See Fig. 4.

2. Set the cup pressure at zero by turning the adjustment knob (K) fully counterclockwise.

3. Slowly turn the adjustment knob (K) clockwise to increase the air pressure to the cup.

4. Push the adjustment knob lock-ring (L) down to hold the cup pressure setting.

Fig. 4

Setting the Gun Air Pressure

Set the gun air pressure regulator for the pressure needed to atomize your fluid. See your gun manual for recommended settings.

Spraying Tips

The regulator is not self relieving so if the regulated air pressure setting is causing excessive fluid flow , follow these steps.

1. Pull up the cup regulator adjustment knob lock-ring

(L). See Fig. 4.

2. Turn the adjustment knob (K) counterclockwise.

3. Pull out the regulator relief valve cap (11) until the gauge pressure is below the desired cup pressure setting. Do not rotate the pressure relief valve cap while pulling it out.

4. Turn the adjustment knob (K) clockwise until you obtain the desired pressure setting.

5. Push down the adjustment knob lock-ring (L).

CAUTION

Do not restrict the fluid flow by continuously spraying with the gun’s fluid adjusting knob turned in

(clockwise) as this will cause excessive wear on the fluid needle and trigger/air valve shaft.

To restrict the fluid flow, lower the cup pressure or use a smaller size needle/nozzle set and air cap combination.

If the cup pressure must be below 1.0 psi (0.07 bar) to achieve the desired fluid flow, a smaller needle/nozzle size is recommended.

Optional Gun Air Regulator 235–119

NOTE: See Accessories for parts.

Operation

1. Pull up the gun regulator adjustment knob lock-ring

(L); this allows the knob to turn. See Fig. 5.

2. Set the gun air pressure at zero by turning the regulator adjustment knob (K) fully counterclockwise.

3. Turn on the air supply to the gun.

4. Turn the regulator adjustment knob (K) clockwise to increase the air pressure to the gun.

WARNING

Never exceed 100 psi (7 bar) Maximum Working

Air Pressure to the gun. Exceeding the maximum working pressure of the gun or any other system component could cause component rupture, which could result in serious injury and property damage.

Fig. 5

5. Push the adjustment knob lock-ring (L) down to hold the pressure setting.

L

K

Maintenance

Disconnect the Gun and Air Regulator from the Cup

1. Follow the Pressure Relief Procedure Warning on page 6.

4. If any fluid is in the lid elbow fitting (8) or air inlet tube (3), flush them with solvent but do not soak them in solvent for an extended period. Replace the tubing or elbow if necessary; see Parts to order.

2. Push down on the cup-mounted elbow fitting’s outer ring to disengage the tube grip, then pull the tubing out of the fitting.

CAUTION

When cleaning the pressure cup lid, avoid prolonged exposure of the gasket (101) to solvent as this will cause it to swell.

3. Holding a wrench on the gun fluid inlet fitting, disconnect the pressure cup swivel nut fitting.

NOTE: See Accessories to order the gasket.

4. Disconnect the gun air inlet fitting from the regulator.

5. Clean the gun as instructed in the gun manual.

8

A

B

C

CAUTION

Do not clean these air regulators in a gun washer as it will damage the regulator’s diaphragm. Do not use any cleaning method that allows solvent to enter the regulator internally.

101

M

Remove the Cup Lid

1. Push the clamp lever (A) fully to the unclamped position, against the yoke (C). See Fig. 6.

2. Twist the cup (102) counterclockwise to disengage the yoke hook from the cup extended pins (M).

3. Remove the cup lid (B) and clean the lid and the cup (102).

Fig. 6

102

Parts

Use Only Genuine Graco Parts and Accessories

Single Air Regulator Pressure Cup

235–373

Includes the Single Air Regulator Assembly 235–375 and the SST Pressure Cup (not sold separately).

Gun not included

Single Air Regulator Assembly 235–375

Includes the following parts:

3

4

1

2

5

6

Ref.

No.

Part No.

Description

8

9

10

11

162–453 NIPPLE

156–823 SWIVEL FITTING

187–169 TUBE, nylon; 5/32” OD

187–410 AIR FITTING

Qty.

111–500 GAUGE; 0-15 psi (0-1 bar) range 1

111–501 REGULATOR; 0-12 psi

(0-0.8 bar) range

111–503 ELBOW FITTING, 90 _ swivel; for 5/32 OD tube

1

100–168 NIPPLE

110–440 TEE FITTING

2

1

112–059 PRESSURE RELIEF VALVE

1

1

1

1

1

1

1 11

3

8

1

8 1 10

1

1 6 1 5

Apply anaerobic pipe sealant (white) to external threads.

9

4

1

1

01725

2 1

01728

Parts

Use Only Genuine Graco Parts and Accessories

Double Air Regulator Pressure Cup

235–374

Includes the Double Air Regulator Assembly 235–376 and the SST Pressure Cup (not sold separately).

Gun not included

01726

1 Apply anaerobic pipe sealant (white) to external threads.

1 11

3

8

1 9

2 1

12 1

1

13

8

1 10

4

1 6 1 5

01729

Double Air Regulator Assembly 235–376

Includes the following parts:

Ref.

No.

Part No.

Description Qty.

4

5

2

3

6

156–823 SWIVEL FITTING

187–169 TUBE, nylon; 5/32” OD

162–453 NIPPLE 1

111–500 GAUGE; 0-15 psi (0-1 bar) range 1

1

1

111–501 REGULATOR; 0-12 psi

(0-0.8 bar) range 1

10 308-257

9

10

11

12

Ref.

No.

Part No.

Description

8

13

111–503 ELBOW FITTING, 90 _ swivel; for 5/32 OD tube

100–168 NIPPLE

110–440 TEE FITTING

112–059 PRESSURE RELIEF VALVE

110–436 GAUGE; 0-100 psi

(0-7 bar) range

110–438 REGULATOR; 0-100 psi

(0-7 bar) range

Qty.

1

1

1

1

2

1

12

11

5

Parts

Use Only Genuine Graco Parts and Accessories

6

15

16 1

2

3

4

14

17

13

10

7

9

8

Apply anaerobic pipe sealant (white) to external threads.

Apply high strength anaerobic pipe sealant (green) to external threads.

Remote Single Air Regulator Pressure

Cup 235–054

Includes the Remote Air Regulator Assembly 236–142 and the SST Pressure Cup (not sold separately).

3

4

1

2

5

6

Ref.

No.

Part No.

Description

172–620 HOOK

100–188 NUT, hex

172–680 ELBOW FITTING

172–682 HOSE ADAPTER

Qty.

1

1

1

1

111–500 GAUGE; 0-15 psi (0-1 bar) range 1

111–501 REGULATOR; 0-12 psi

(0-0.8 bar) range 1

9

10

11

12

13

7

8

Ref.

No.

Part No.

Description

14

15

16

17

112–218

112–059

CONNECTOR; for 5/32 OD tube

111–503 ELBOW FITTING, 90 _ swivel; for 5/32 OD tube

188–783 TUBE, nylon; 5/32” OD

110–440 TEE FITTING

PRESSURE RELIEF VALVE

103–656 NIPPLE, hex

212–005 AIR HOSE, buna-n; 1/4 npsm;

6 ft. (1.83 m) long

212–006 FLUID HOSE, nylon; 3/8 npsm;

6.5 ft. (1.98 m) long

188–770 MOUNTING BRACKET

112–308 PANEL NUT

183–696 TEE FITTING

Qty.

1

1

1

1

1

1

1

1

1

1

1

308-257 11

The Graco Warranty and Disclaimers

WARRANTY

Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warranty,

Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven 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, 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 with Graco equipment of 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 claim. 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.

DISCLAIMERS AND LIMITATIONS

The terms of this warranty constitute purchaser ’s sole and exclusive remedy and are in lieu of any other warranties (express or implied), including warranty of merchantability or warranty of fitness for a particular purpose, and of any non–contractual liabilities, including product liabilities, based on negligence or strict liability . Every form of liability for direct, special or consequential damages or loss is expressly excluded and denied. In no case shall Graco’s liability exceed the amount of the purchase price. Any action for breach of warranty must be brought within two (2) years of the date of sale.

EQUIPMENT NOT COVERED BY GRACO WARRANTY

Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose , with respect to accessories, equipment, materials, or components sold but not manufactured by graco. These items sold, but not manufactured by Graco (such as electric motor, 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.

Manual

Change Summary

This manual was changed from Rev A to Rev B to delete the Pressure Cup part no. from the manual, making it available as part of a kit only, and to add Pressure Cup operation and replacement part information.

Sales Offices: Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)

Foreign Offices: Canada; England; Switzerland; France; Germany; Hong Kong; Japan; Korea

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

PRINTED IN U.S.A. 308–257 12–92 Revised 6–93

12 308-257