Graco 309475G User Manual

Instructions/Parts List

High Pressure

309475G

Fluid Regulators

For use in air-assisted spray systems to ensure accurate, positive control of fluid pressure to a spray gun, dispensing valve, or atomizing head. For professional use only.

Important Safety Instructions

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

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Contents

List of Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

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

Flush Before First Use . . . . . . . . . . . . . . . . . . . 13

Pressure Relief Procedure . . . . . . . . . . . . . . . . 13

Adjusting the Regulator . . . . . . . . . . . . . . . . . . . 13

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Manual Conventions

Warning

WARNING

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

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

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Accessory Gauges . . . . . . . . . . . . . . . . . . . . . . . . . 25

Flow Rate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . 26

Graco Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 28

Symbols, such as fire and explosion (shown above), alert you to a specific hazard and direct you to read the indicated hazard warnings (pages 4-5) for detailed information.

Caution

CAUTION

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

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List of Models

Part No. Series Model Type Maximum Fluid Inlet Pressure Regulated Pressure Range

233760 234266BB

233767 234264BB

233768 234265BB

233769 234270BB

233770 234271BB

233813 234259BB

233814 234260BB

Back Pressure Regulators

Part No. Series Model Type

233771 234268BB

233772 234269BB

P60-VP DN7 P60-VP DN7 npt

P200-VM P200-VM npt

P150-VP DN7 P150-VP DN7 npt

P320-VP DN7 P320-VP DN7 npt

P250-VP P250-VP npt

P100-VM P100-VM npt

P100-RM P100-RM npt

P200-RM P200-RM npt

Pneumatic 5000 psi (36 MPa, 360 bar) 70-900 psi

Mechanical 5000 psi (36 MPa, 360 bar) 1300-3000 psi

Mechanical 5000 psi (36 MPa, 360 bar) 1300-4000 psi

Pneumatic 5000 psi (36 MPa, 360 bar) 300-2000 psi

Pneumatic 5000 psi (36 MPa, 360 bar) 600-4600 psi

Pneumatic 5000 psi (36 MPa, 360 bar) 600-3600 psi

Mechanical 2600 psi (18 MPa, 180 bar) 600-1500 psi

Mechanical, back pressure

(0.5-6 MPa, 5-60 bar)

(9-20 MPa, 90-200 bar)

(9-27 MPa, 90-270 bar)

(2-15 MPa, 20-150 bar)

(4-32 MPa, 40-320 bar)

(4-25 MPa, 40-250 bar)

(4-10 MPa, 40-100 bar)

Maximum Permanent Supply Pressure

2500 psi (17 MPa, 170 bar) 600-1500 psi

3400 psi (23.5 MPa, 235 bar) 1300-3000 psi

Regulated Pressure Range

(4-10 MPa, 40-100 bar)

(9-20 MPa, 90-200 bar)

Key to Model Designation

Pressure regulation valve e.g. P60- R M DN7 npt

npt version

Valve Seat Orifice 7mm

Operating Mode P - pneumatic

M - mechanical

Action V - pressure regulation

R - back-pressure regulation

Regulation max 60 bar

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Warning

WARNING

EQUIPMENT MISUSE HAZARD

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

• This equipment is for professional use only.

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

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

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

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

• Do not exceed the maximum working pressure of the lowest rated system component. Refer to the

Technical Data on page 24 for the maximum working pressure of this equipment.

• Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Techni- cal Data section of all equipment manuals. Read the fluid and solvent manufacturer's warnings.

• Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 180°F (82°C) or below -40°F (-40°C).

• Wear hearing protection when operating this equipment.

• Never use 1,1, 1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use could result in a chemical reaction, with the possibility of explosion.

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

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Warning

WARNING

SKIN INJECTION HAZARD

Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause an extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury.

• Fluid injected into the skin might look like just a cut, but is a serious injury. Get immediate surgical

treatment.

• Do not point the gun at anyone or at any part of the body. Do not put your hand or fingers over the spray tip. Do not stop or deflect fluid leaks with your hand, body, glove, or rag.

• Never spray without the tip guard in place.

• Follow the steps under Pressure Relief Procedure, page 13, when you stop spraying and before cleaning, checking, or repairing equipment.

• Check the hoses and couplings daily. Replace worn, damaged, or loose parts immediately. Permanently coupled hoses cannot be repaired; replace the entire hose.

• Tighten all fluid connections before each use.

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or swallowed.

• Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

• Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines.

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

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Introduction

A fluid pressure regulator is used in air-assisted spray systems to ensure accurate, positive control of fluid pressure to a spray gun, dispensing valve, or atomizing head.

A regulator installed at a circulating line take-off or pump reduces main line pressure to maintain the desired fluid pressure to the spray gun, dispensing valve, or atomizing head.

Models 233771, 233772, 234268 and 234269 (F are mechanically operated back pressure regulators that limit the supply pressure to a set value by opening an outlet and guiding back excess material when the predetermined pressure has been achieved. These valves are used in circulating systems.

IG. 1.)

Models 233767, 233814, 233768, 234260, 234264, and 234265 (F sure regulators designed primarily for use with low to medium viscosity fluids.

Models 233760, 233769, 233770, 233813, 234259, 234266, 234270, and 234271 (F cally operated fluid pressure regulators designed primarily for use with highly viscous coatings.

IG. 2.) are mechanically operated fluid pres-

IG. 3.) are pneumati-

Adjustment knob

Fluid Inlet (From gun)

Fig. 1. Cutaway of Mechanical Back Pressure Regulator

Spring

Valve plunger

Fluid Outlet (Return line)

TI1770A

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Adjustment knob

Spring

Valve plunger

Introduction

Fluid inlet

(from pump)

TI1769A

Fig. 2. Cutaway of Mechanical Fluid Pressure Regulator

Fluid Inlet (From pump)

Fluid outlet (to gun)

TI1769A

Air Inlet

Diaphragm

Valve plunger

Fluid Outlet (To gun)

TI1774A

Fig. 3. Cutaway of Pneumatic Fluid Pressure Regulator

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Installation

1. Install one regulator for each spray gun.

2. Apply thread sealant to connections as necessary.

3. Make sure that the direction of fluid flow agrees with the flow direction markings on the regulator body.

a. Install a fluid pressure regulator upstream of the

gun: Connect the fluid line from the pump to the inlet of the fluid regulator. Connect the fluid line to the gun to the regulator’s outlet.

b. Install a back pressure regulator downstream of

the gun. Connect the fluid return line from the gun to the inlet of the back pressure regulator. Connect the fluid return line to the pump to the regulator’s outlet.

4. Flush and test the entire system.

IG. 4., FIG. 5., and FIG. 6. show possible configurations

for installing a system. They do not depict actual system designs. Consult your Graco distributor for assistance in designing a system that meets your specific requirements.

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Installation

Air in to pump

Air in to gun

Fluid

Fluid in

Fig. 4. High pressure, non-circulating system, mechanical fluid regulator Key

A Air line filter B Bleed-type air shut-off valve C Pump air regulator D Gun air regulator E Fluid hose FPump

G Fluid drain valve H Fluid shut-off valve J Mechanical fluid pressure regulator K Fluid pressure gauge L Air-assisted spray gun M Fluid filter Y Pump ground wire Z Whip hose

TI1763C

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