INSTRUCTIONS–PARTS LIST

This manual contains important warnings and information.

READ AND KEEP FOR REFERENCE.

308–325

First choice when quality counts.

Rev. C

Supersedes Rev. B

INSTRUCTIONS

ACETAL MATERIAL, WATERBASE COMPATIBLE

Fluid Pressure Regulators

For Use In Low-Pressure Systems Only

Fluid Flow up to 0.5 gpm (1.9 lpm)

Spring-Operated Regulators

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

3 to 30 psi (21 to 207 kPa, 0.21 to 2.1 bar)

Regulated Pressure Range

Model 236 − 081, Series A with no pressure gauge

Model 236–449, Series A with stainless steel pressure gauge

0 to 30 psi (0 to 207 kPa, 0 to 2.1 bar) range

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

20 to 100 psi (0.12 to 0.7 MPa, 1.4 to 7.0 bar)

Regulated Pressure Range

Model 236–216, Series A with no pressure gauge

Model 236–450, Series A with stainless steel gauge

0 to 100 psi (0 to 0.7 MPa, 0 to 7 bar) range

Air-Operated Regulators

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

3 to 100 psi (0.02 to 0.7 MPa, 0.21 to 7 bar) Regulated Pressure Range

Model 236–281, Series A with stainless steel gauge

0 to 100 psi (0 to 0.7 MPa, 0 to 7 bar) range

Model 238–159, Series A with no pressure gauge

0 to 100 psi (0 to 0.7 MPa, 0 to 7 bar) range

CAUTION

The fluid supply system main line pressures often exceed the pressure range of the gauge supplied with regulator

236–449. Exposing this gauge to excessive pressure can damage the gauge, causing inaccurate readings, and the needle will not return to zero. Such damage is not covered by the Graco warranty.

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

Graco Inc. is registered to I.S. EN ISO 9001

Table of Contents

Warnings

Installation

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

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

Operation

Service

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

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

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

13

16

6

8

2

4

Accessories

Dimensions

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

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

16

16

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

19

Graco Standard Warranty

Graco Phone Number

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

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

20

20

Warning Symbol

WARNING

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

Symbols

Caution Symbol

CAUTION

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

INSTRUCTIONS

WARNING

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

D This equipment is for professional use only.

D Read all instruction manuals, tags, and labels before operating the equipment.

D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.

D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

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

D Do not exceed the maximum working pressure of the lowest rated component in your system. Do not exceed 100 psi (0.7 MPa, 7 bar) maximum fluid inlet pressure of the regulator or the maximum working pressure of the lowest-rated component in your system.

D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the

Technical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.

D Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid and solvent manufacturer.

D Comply with all applicable local, state, and national fire, electrical, and safety regulations.

WARNING

INJECTION HAZARD

Spray from the gun, leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed 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. Get immediate medical attention.

D Do not point the gun at anyone or at any part of the body.

D Do not put your hand or fingers over the spray gun tip or extruder gun tip.

D Do not stop or deflect leaks with your hand, body, glove or rag.

D Always have the tip guard and the trigger guard on the gun when spraying.

D Check the gun diffuser operation weekly. Refer to the gun manual.

D Be sure the gun trigger safety operates before spraying.

D Lock the gun trigger safety when you stop dispensing.

D Follow the Pressure Relief Procedure on page 4 if the spray tip clogs and before cleaning, checking, or servicing the equipment.

D Tighten all fluid connections before operating the equipment.

D Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do not repair high pressure couplings; you must replace the entire hose.

D Fluid hoses must have spring guards on both ends to help protect them from rupture caused by kinks or bends near the couplings.

TOXIC FLUID HAZARD

Graco does not manufacture or supply the reactive chemical components that may be used in this equipment and is not responsible for injury or property loss, damage, expense or claims (direct or consequential) that arise from the use of such chemical components.

United States Government safety standards have been adopted under the Occupational Safety and Health Act.

You should consult these standards––particularly the General Standards, Part 1910 and the Construction

Standards, Part 1926.

Installation

Pressure Relief Procedure Introduction

Fluid pressure regulators are used for accurate, positive control of the fluid pressure to spray guns, dispensing valves or atomizing heads.

Regulators installed at circulating line take-offs or pumps are used to reduce main line pressure and maintain the desired fluid pressure to the spray gun or atomizing head.

Before Installing the Fluid Regulator

1. Determine where to locate the regulator.

2. Install a ball valve for the regulator inlet and outlet.

3. Install temporary plumbing between the ball valves.

4. Thoroughly flush the system to remove metal chips and other contaminants and to check for leaks.

Installing the Fluid Regulator

1. See Figs. 1 and 2 on page 5. Install one regulator for each spray gun. Mount the regulator in a vertical position for the best flow and minimum pigment settling. The gauge, if used, must be mounted vertically. If the regulator is mounted horizontally, an elbow must be used so the gauge will be vertical.

2. Put sealer on threaded connections, except on swivel unions as it interferes with the swivel action.

3. Flush and test the entire system. Be sure to follow the flushing procedure on page 6.

WARNING

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

D Are instructed to relieve the pressure

D Stop spraying

D Check or service any of the system equipment

D Install or clean the spray tips

1. Shut off the pump.

2. Close the fluid regulator’s inlet ball valve (B). Refer to Fig.1, page 5.

3. Relieve fluid pressure in the fluid regulator by triggering the spray gun.

4. In spring-operated regulators, turn the adjustment handle (1) counterclockwise until the spring force is relieved.

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

CAUTION

Avoid overtightening threaded connections into the regulator’s plastic inlet and outlet threads. Check to be sure the threaded connections are tight and leak-free, but do not overtighten!

4 308-325

Installation

Spring-Operated Regulator Installation

Models 236–081, 236–216 (without gauge)

236–449, 236–450 (with gauge)

KEY

A Fluid supply

B Inlet ball valve

C Outlet ball valve

D Air filter and regulator

E Back pressure valve

F Fluid return

G Air supply

1 Regulator adjustment handle

B

C

G

1

D

E

F

A

Fig. 1

Pilot Regulator Air Supply Line

Air-Operated Regulator Installation

Model 236–281 (with gauge)

Model 238–159 (without gauge)

KEY

A Fluid supply

B Inlet ball valve

C Outlet ball valve

D Air filter, regulator, and moisture separator

E Air supply

B

A

C

Fig. 2

D

E

02726

02726

CAUTION

D The new system must be cleaned and tested thoroughly before admitting fluid to the regulator to avoid contaminants clogging or damaging the regulator.

D Always use the lowest possible air and fluid pressures for your application. High pressures can cause premature spray tip, regulator, and pump wear.

NOTE: Reference numbers and letters in parentheses in the text refer to Figs.1 through 5 and the Parts

Drawings.

Regulating Fluid Pressure

Spring Operated Regulators

1. Close the regulator: turn the adjustment handle (1) counterclockwise to relieve the spring tension. See

Fig. 3.

2. Start the pump and open the fluid regulator’s inlet ball valve (B) to admit fluid to the regulator. See

Fig. 1.

3. Turn the adjustment handle (1) clockwise to increase fluid pressure. See Fig. 3. Adjust for the desired spray pattern. Before reducing the regulator pressure, partially relieve pressure in the gun hose to ensure the correct gauge reading.

Tighten the jam nut (3) to the regulator cap (5) to ensure the proper pressure setting.

5

3

Operation

Air Operated Regulators

1. Start the pump and open the fluid regulator’s inlet ball valve (B) to admit fluid to the regulator. See Fig. 2.

2. Increase the air pressure to obtain the desired fluid pressure. Before reducing the regulator pressure, partially relieve pressure in the gun hose to ensure the correct gauge reading.

NOTE: Make sure the air bleed hole (J) in the air line fitting (2) is not plugged. Refer to Fig. 4. For the best results, use an air regulator with at least a two inch diameter diaphragm to control this fluid regulator.

Flushing Procedure

1. Flush the regulator with a compatible solvent whenever the rest of the system is flushed.

2. Remove the gauge if the fluid pressure will exceed the gauge range.

3.

Spring Operated Regulators Only a. Shut off the pump and relieve fluid pressure in the system by opening the back pressure valve (E) or other bypass valve. See Fig. 1.

b. Turn the adjustment handle (1) clockwise to open the regulator valve to the desired flushing outlet pressure and flow. See Fig. 3.

4.

Air Operated Regulator Only a. Increase the air pressure to obtain desired fluid flushing pressure.

b. Make sure the air bleed hole (J) in the air line fitting (2) is not plugged. Refer to Fig. 4.

5. Flush until thoroughly clean. Always use the lowest possible pressure when flushing.

6.

Spring Operated Regulators Only

After flushing, turn the adjustment handle (1) counterclockwise to the previous pressure setting.

Partially relieve pressure in the gun hose to ensure the correct gauge reading.

1

Fig. 3 02729

Notes

Service

Air Operated Regulator

Disassembly

1. Shut off the pump. Close the ball valve at the regulator’s air inlet. Refer to Fig. 2, page 5.

2. Release all the air and fluid pressure in the regulator and disconnect the air and fluid lines.

3. Remove the regulator from the system. Remove the eight hex head screws (18) and nuts (19) from the regulator cap (5) and the housing (20). See

Fig. 4.

4. Remove the o-ring (6*) from the regulator cap (5).

Remove the jam nut (9) and the washer (10) from the diaphragm plate (13).

5. Remove the diaphragm (11*) and gasket (12*).

6. Remove the valve seat (14*) and the o-ring (15*) from the regulator body.

CAUTION

Use special care when handling the hard carbide ball

(16*) and seat (14*) to avoid damage to them.

7. Remove the ball (16*) and the spring (17*).

8. Thoroughly clean and inspect all parts. Replace any parts that appear to be worn or damaged.

Reassembly

1. Place the spring (17*) into the housing (20), then the ball (16*) on top of the spring.

CAUTION

Use special care when tightening the seat (14*).

Tighten the seat by hand several turns before using a wrench. Use care not to strip the plastic threads in the housing (20).

2. Tighten the seat (14*) and the o-ring (15*) into the housing. Torque to 37–43 in–lbs (4.1–4.8 N.m).

3. Assemble the following parts onto the diaphragm plate (13). Place the gasket (12*) and diaphragm

(11*), with the blue PTFE r side facing down, toward the diaphragm plate (13). Place the washer (10), with ridges facing the rubber side of the diaphragm, onto the diaphragm plate (13).

Secure them with the jam nut (9). Torque the jam nut onto the diaphragm plate to 28–32 ft–lb (38–43

N.m).

4. Install the assembled parts in the housing (20), with the stem on the diaphragm plate (13) oriented towards the seat (14*).

5. Apply thread sealant and tighten the air line fitting

(2) into the nut (4) in the cap (5). Torque to

140–160 in–lb (16–18 N.m).

6. Place the hex head screws (18) into the eight holes in the cap (5) and install onto the housing

(20) with the nuts (19) located around the housing holes. Torque the eight hex head screws in the sequence shown on the Top View in Fig. 4.

NOTE: Numbers on the diagram indicate the tightening sequence. Torque screws evenly to 60 in–lb

(6.8 N.m), three times, consecutively, to compensate for diaphragm relaxation.

Fig. 4

Service

Models shown:

236–281 (with gauge)

238–159 (without gauge)

4 2

3

18, 19

5

J

4

9

2

10

11*

20

14*

16*

17*

1 Torque to 37–43 in–lbs (4.1–4.8 N.m).

2 Torque to 28–32 ft–lbs (38–43 N.m).

3

4

Torque screws evenly to 60 in–lb (6.8 N.m), three times, consecutively, to compensate for diaphragm relaxation.

Follow the torque sequence shown below.

Torque to 140–160 in–lbs (16–18 N.m).

02730

3 5

1 7

Top View

6*

12*

13

15*

1

8 2

6 4

02727

Service

Spring Operated Regulators

Disassembly

1. Shut off the pump. Close the ball valve at the regulator’s fluid inlet. Refer to Fig. 1, page 5.

2. Release all fluid pressure in the regulator and disconnect the fluid line. Remove the regulator from the system.

3. Turn the adjustment handle (1) counterclockwise until the spring force is relieved (Fig. 3).

4. Remove the eight hex head screws (18) and nuts

(19) from the regulator cap (5) and the housing (20).

See Fig. 5.

5. Remove the spring (8), spring guide (7), and o-ring

(6*) from the regulator cap (5). Remove the jam nut (9) and the washer (10) from the diaphragm plate (13).

6. Remove the diaphragm (11*) and the gasket (12).

Remove the valve seat (14*) and o-ring (15*) from the regulator body.

CAUTION

Use special care when handling the hard carbide ball

(16*) and seat (14*) to avoid damage to them.

7. Remove the ball (16*) and spring (17*).

8. Thoroughly clean and inspect all parts. Replace any parts that appear to be worn or damaged.

Reassembly

1. Place the spring (17*) into the housing (20), then the ball (16*) on top of the spring.

CAUTION

Use special care when tightening the seat (14).

Tighten it by hand several turns before using a wrench. Use care not to strip the plastic threads in the housing (20).

2. Tighten the seat (14*) and the o-ring (15*) into the housing. Torque to 37–43 in–lbs (4.1–4.8 N.m).

3. Assemble the following parts onto the diaphragm plate (13). First, place the gasket (12*) and diaphragm (11*), with the blue PTFE r side facing down, towards the diaphragm plate (13). Then, place the washer (10), with ridges facing the rubber side of the diaphragm, onto the diaphragm plate (13). Secure them with the jam nut (9).

Torque the jam nut onto the diaphragm plate to

28–32 ft–lb (38–43 N.m).

4. Install the assembled parts in the housing (20), with the stem on the diaphragm plate (13) oriented towards the seat (14*).

5. Coat the outer surfaces of the spring (8) with no. 2 lithium base grease to reduce possible friction.

6. Place the spring (8) on top of the jam nut (9) and the spring guide (7) on top of the other end of the spring. Apply no.2 lithium base grease in the drill point of the spring guide for lubrication.

7. Place the hex head screws (18) into the eight holes in the cap (5) and install onto the housing

(20) with the nuts (19) located around the housing holes. Torque the eight hex head screws in the sequence shown on the Top View in Fig. 5.

8. Screw the adjustment handle (1) into the nut (4) in the regulator cap (5).

10 308-325

Fig. 5

Service

Model 236–081 shown

4

3 18, 19

10

11*

13

12*

15*

14*

1

*6

1

2

3

20

16*

17*

Torque to 37–43 in–lbs (4.1–4.8 N.m).

Torque to 28–32 ft–lb (38–43 N.m).

02732

Torque screws evenly to 60 in–lb (6.8 N.m), three times, consecutively, to compensate for diaphragm relaxation. Follow the torque sequence shown below.

3 5

1 7

Top View

1

5

7

8

9

2

8 2

6 4

02766

308-325 11

Troubleshooting

NOTE: Check all possible remedies in the

Troubleshooting Chart before disassembling the fluid regulator.

WARNING

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

Pressure Relief Procedure on page 4.

Problem

No pressure regulation.

Fluid leaks from between the cap

(5) and the housing (20).

Pressure creeps above setting.

Pressure drops below setting.

Cause

Damaged or clogged air regulator or line (236–281 or 238–159).

No flow or pressure to the inlet of the regulator.

Damaged diaphragm (11*).

Loose cap (5).

Worn gasket (12*).

Worn o-ring (6*).

Damaged or clogged air regulator or line (236–281 or 238–159).

Damaged diaphragm (11*).

Contamination between ball (16*) and seat (14*).

Damaged or clogged air regulator or line (236–281 or 238–159).

Empty/clogged supply line.

Clogged air spray gun or fluid dispensing valve.

Using regulator beyond its rated flow capacity, see Technical Data on page 18.

Solution

Clear obstruction in line, service regulator if necessary.

Clear obstruction in the fluid line to the regulator.

Replace diaphragm.

Tighten screws (18,19) in sequence shown in Service section.

Replace gasket.

Replace o-ring.

Clear obstruction in line, service regulator if necessary.

Replace diaphragm.

Replace ball (16*), seat (14*), and o-ring (15*).

Clear obstruction in line, service regulator if necessary.

Fill/flush supply line.

Replace, see gun or valve manual for service instructions.

Install additional regulators.

12 308-325

Parts

3 to 30 psi (

21 to 207 kPa, 0.21 to 2.1 bar

) Spring-Operated Regulators

Model 236–081, Series A

Model 236–449, Series A includes items 1 to 20 includes items 1 to 30

18

4

7

5

*6

8

1

3

13

14*

15*

16*

9

10

11*

12*

17*

20

19

30

Ref.

No.

Part No.

Description

1

3

7

8

4

5

6*

9

236–590 Adjustment Handle Assembly

101–448 NUT, jam; 3/8–24 unf–2b

106–292 NUT, hex; 3/8–24 unf–2b

188–943 CAP, regulator

112–349 O-RING, buna

188–949 GUIDE, spring

112–203 SPRING, compression, adjusting, yellow

171–858 NUT, jam, special;

11/16–16 unc–2b

10 171–862 WASHER, diaphragm

11* 112–348 DIAPHRAGM; PTFE fabric/buna–n base r with nylon

12* 172–132 GASKET; cellulose fiber

Qty.

1

1

1

1

1

1

1

1

1

1

1

02735

Ref.

No.

Part No.

Description

13 236–591 Diaphragm Plate Assembly

11/16–16 unc–2a

14* 188–944 SEAT, valve; stainless steel

15* 109–450 O-RING; PTFE r

16* 102–922 BALL, tungsten carbide

17* 112–204 SPRING, compression, ball

18 112–547 SCREW, flanged hex head;

19

1/4–20 unc–2a x 1”

112–248 NUT, hex, retaining;

20

30

1/4–20 unc–2b

188–942 HOUSING, regulator

187–875 GAUGE, pressure,

30 psi (207 kPa, 2 bar); stainless steel

* These parts are included in Repair Kit 236–589,

which may be purchased separately.

Qty.

1

8

8

1

1

1

1

1

1

308-325 13

Parts

20 to 100 psi (

0.12 to 0.7 MPa, 1.4 to 7.0 bar

) Spring Operated Regulators

Model 236–216, Series A

Model 236–450, Series A includes items 1 to 20 includes items 1 to 30

1

3

18

9

10

5

*6

4

7

8

11*

12*

13

20

19

14*

15*

16*

17*

30

Ref.

No.

Part No.

Description Qty.

1

3

4

7

8

5

6*

9

236–590 Adjustment Handle Assembly

101–448 NUT, jam; 3/8–24 unf–2b

106–292 NUT, hex; adjustment;

3/8–24 unf–2b

188–943 CAP, regulator

112–349 O-RING, buna–n

188–949 GUIDE, spring

105–291 SPRING, compression, adjusting, silver

171–858 NUT, jam, special;

11/16–16 unc–2b

10

11*

171–862 WASHER, diaphragm

112–348 DIAPHRAGM; PTFE r with nylon fabric/buna–n base

12* 172–132 GASKET; cellulose fiber

1

1

1

1

1

1

1

1

1

1

1

02735

Ref.

No.

Part No.

Description

13 236–591 Diaphragm Plate Assembly

11/16–16 unc–2a

14* 188–944 SEAT, valve; stainless steel

15* 109–450 O-RING; PTFE r

16* 102–922 BALL, tungsten carbide

17* 112–204 SPRING, compression, ball

18 112–547 SCREW, flanged hex head;

19

1/4–20 unc–2a x 1”

112–248 NUT, hex, retaining;

20

30

1/4–20 unc–2b

188–942 HOUSING, regulator

187–874 GAUGE, pressure,

100 psi (0.7 MPa, 7 bar); stainless steel

* These parts are included in Repair Kit 236–589,

which may be purchased separately.

Qty.

8

1

8

1

1

1

1

1

1

14 308-325

Parts

3 to 100 psi (

0.02 to 0.7 MPa, 0.21 to 7 bar

) Air Operated Regulator

Model 238–159, Series A

Model 236–281, Series A

includes items 1 to 20

includes items 1 to 30

9

10

2

18

5

4

*6

11*

12*

13

14*

15*

16*

17*

20

19

30

Ref.

No.

Part No.

Description

2

4

5

6*

9*

189–539 NIPPLE, hex

106–292 NUT, hex; 3/8–24 unf–2b

188–943 CAP, regulator

112–349 O-RING; buna–n

171–858 NUT, Jam, special;

11/16–16 unc–2b

10 171–862 WASHER, diaphragm

11* 112–348 DIAPHRAGM; PTFE fabric/buna–n base r with nylon

12* 172–132 GASKET; cellulose fiber

13 236–591 Diaphragm Plate Assembly

14 * 188–944 SEAT, valve; stainless steel

Qty.

1

1

1

1

1

1

1

1

1

1

02733

Ref.

No.

Part No.

Description

15 * 109–450 O-RING; PTFE r

16* 102–922 BALL; tungsten carbide

17* 112–204 SPRING, compression, ball

18 112–547 SCREW flanged hex head;

19

20

30

1/4–20 unc–2a x 1”

112–248 NUT, hex, retaining;

1/4–20 unc–2b

188–942 HOUSING, regulator

187–874 GAUGE, pressure,

100 psi (0.7 MPa, 7 bar); stainless steel

* These parts are included in Repair Kit 236–589, which may be purchased separately.

Qty.

1

1

1

8

1

8

1

308-325 15

Repair Kits

Kit No. 236–589

For spring- and air-operated regulators

Part No.

112–348

172–132

188–944

109–450

112–204

102–922

112–349

Description

DIAPHRAGM; PTFE fabric/buna–n base r with nylon

GASKET; cellulose fiber

SEAT, valve; stainless steel

O-RING; PTFE r

SPRING, compression, ball

BALL, tungsten carbide

O-RING; buna–n

Qty.

1

1

1

1

1

1

1

Dimensions

1/4 npt(f) inlet

3

2

5

1

1

2

3

4

5

1/4 npt (f) outlet

5.81” (148 mm)

1.62” (41 mm)

3.75” (95 mm) diameter

6.6” ( 168 mm)

2.25” (57 mm)

4

1/4 npt gauge port

Accessories

Use Only Genuine Graco Parts and Accessories

Air Filter, Moisture Separator with

Regulators 217–075

200 psi (1.4 MPa, 14 bar) Maximum Inlet Pressure

For moisture separation and to separate air regulation to spray gun and fluid regulator. 1/2 npt(f) inlet

With two 0 to 100 psi (0 to 0.7 MPa, 0 to 7 bar) 1/4 npt(m) regulated ports and two 0 to 200 psi

(0 to 1.4 MPa, 0 to 14 bar) 3/8 npt(f) unregulated ports

Air Filter 106–146

250 psi (1.8 MPa, 18 bar) Maximum Working Pressure

Removes oil, water and dirt from main air line.

1/2 npt, 0 to 200 psi (0 to 1.4 MPa, 0 to 14 bar) regulated pressure range, manual bowl drain, 40 micron element, 40 oz. bowl

Air Regulator and Gauge 206–199

0 to 125 psi (0 to 0.75 MPa, 0 to 8.5 bar) regulated pressure range; 200 psi (1.4 MPa, 14 bar) steel pressure gauge; 1/2 npt(f) inlet and outlet

Fitting Kits

For use when installing the fluid pressure regulator to systems requiring the following material and dimensions.

Kit 236–607 – carbon steel

Part No.

157–705

112–492

Description Qty.

SWIVEL, union, 3/8–18 npsm x

1/4–18 npt 1

NIPPLE, 3/8–18 npsm x 1/4–18 npt 1

Kit 236–608 – metric – carbon steel

Part No.

112–496

112–493

Description

SWIVEL, union, 3/8–19 bspt x

1/4–18 npt

NIPPLE, 3/8–19 bspt x 1/4–18 npt

Qty.

1

1

Kit 236–609 – stainless steel

Part No.

112–497

112–494

Description Qty.

SWIVEL, union, 3/8–18 npsm x

1/4–18 npt 1

NIPPLE, 3/8–18 npsm x 1/4–18 npt 1

Kit 236–610 – metric – stainless steel

Part No.

112–498

112–495

Description

SWIVEL, union, 3/8–19 bspt x

1/4–18 npt

NIPPLE, 3/8–19 bspt x 1/4–18 npt

Qty.

1

1

16 308-325

Notes

308-325 17

Technical Data

Maximum fluid inlet pressure . . . . . . . . . . . . . . . .

Maximum fluid operating temperature

100 psi

(0.7 Mpa, 7 bar)

. . . . . . . . 150 d F

(66 d C)

Regulated fluid pressure range

Models 236–081 and 236–449 . . . . . . . . . 3 to 30 psi

(21 to 207 kPa, 0.21 to 2.1 bar)

Models 236–216 and 236–450 . . . . . . . 20 to 100 psi

(0.12 to 0.7 MPa, 1.4 to 7.0 bar)

Models 238–159 and 236–281 . . . . . . . . 3 to 100 psi

(0.02 to 0.7 MPa, 0.21 to 7 bar)

Maximum flow capacity . . . . . . . . . . . 0.5 gpm (1.9 lpm) with 70 cps fluid at 100 psi

(0.7 MPa, 7 bar) inbound pressure

Wetted Parts . . . . . . . . . . . . . . . . acetal resins, PTFE r , tungsten carbide, 304 and 316 series stainless steel, 17 − 4 PH stainless steel

Weight

Model 236–081 . . . . . . . . . . . . . . . . . . 1.2 lb. (0.54 kg)

Model 236–216

Model 236–281

Model 236–449

Model 236–450

Model 238–159

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

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

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

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

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

1.28 lb. (0.58 kg)

1.39 lb. (0.63 kg)

1.5 lb. (0.68 kg)

1.6 lb. (0.73 kg)

1.69 lb. (0.77 kg)

PTFE is a registered trademark of the Company

18 308-325

Performance Charts

Model 236–081 and 235–449

psi bar

30 2.1

25 1.7

20

1.4

15 1.0

0 gpm lpm ounces/min

10 0.7

5 0.4

0.0

0.1

0.38

13

0.2

0.76

26

FLUID FLOW

0.3

1.14

38

0.4

1.51

51

Model 236–216, 236–450,

236–281, and 238–159

80

70

60

50

40

30

20

10 psi bar

100 7.0

90 6.3

5.6

4.9

4.2

3.5

2.8

2.1

1.4

0.7

0 gpm lpm ounces/min

0.0

0.1

0.38

13

0.2

0.76

26

FLUID FLOW

0.3

1.14

38

0.4

1.51

51

0.5

1.89

64

0.5

1.89

64

308-325 19

Manual Change Summary

This manual went from Rev. B to Rev. C to change o-ring 112–246 (Ref. No 15) to 109–450 and to add regulator

Model No. 238–159.

Graco Standard Warranty

Graco warrants all equipment manufactured by Graco 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. 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 procedures concernées.

Graco Phone Number

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

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.

Sales Offices: Minneapolis, Detroit, Los Angeles

Foreign Offices: Belgium, Canada, England, Korea, France, Germany, Hong Kong, Japan

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

http://www.graco.com

e 1998–1994 Graco Inc. 308–325 Rev. C March 1998 PRINTED IN U.S.A.