Graco 307-756 User Manual

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Page 1

INSTRUCTIONS-PARTS

LIST

307–756

This

manual contains important warnings and information. READ AND KEEP FOR REFERENCE.

INSTRUCTIONS

In-Line

3000 psi (21.0 MPa, 210 bar) Maximum Working Pressure

Model 220–229, Series A

For

use in atomizing and non-atomizing fluid applications

alve

WARNING

o reduce the risk of serious injury injection, you must attach to the outlet of this valve an appropriate application device such as a spray tip and tip guard, or high pressure extension and/or roller

. See

Installation

tails.

on page 7 for more de

, including fluid

First

choice when

quality counts.

Supersedes Rev. B



and PCN C

Rev. C

GRACO INC. P.O. BOX 1441

COPYRIGHT

Graco

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

MINNEAPOLIS, MN

1986, GRACO INC.

04884

55440–1441

Page 2

Table

of Contents

Symbols

Warnings 2. Installation 6 Operation 8 Service 11 Parts 12 Technical Warranty 16 Graco

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

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

Data

Phone Number

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14.

16.

WARNING

EQUIPMENT MISUSE HAZARD

INSTRUCTIONS

Equipment

This equipment is for professional use only

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

Warning Symbol

WARNING

This

symbol alerts you to the possibility of serious

injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This

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

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

Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco distributor.

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

Check equipment daily

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

echnical Data

Do not exceed the maximum working pressure of the lowest rated system component. This equip ment has a

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

nical Data

Do not use hoses to pull equipment.

Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40

D W

ear hearing protection when operating this equipment.

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

on page 14 for the maximum working pressure of this equipment.

3000 psi (21.0 MPa, 210 bar) maximum working pressure.

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

. Repair or replace worn or damaged parts immediately

_F).

Tech-

 307–756

Page 3

WARNING

INJECTION HAZARD

Spray

from the valve, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury can also cause serious injury



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

cal attention.



Do not point the valve 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 leaks with your hand, body



Do not “blow back” fluid; this is not an air spray system.



Always have the tip guard and the trigger guard on the valve when dispensing.



Be sure the safety knob operates before dispensing.



Lock the safety knob when you stop dispensing.



Follow the sure; stop spraying; clean, check, or service the equipment; and install or clean the spray tip.

Pressure Relief Procedure

, including the need for amputation. Fluid splashed in the eyes or on the skin

, glove or rag.

on page 8 whenever you: are instructed to relieve pres

 T

ighten all fluid connections before operating the equipment.



Check the hoses, tubes, and couplings daily Permanently coupled hoses cannot be repaired; replace the entire hose.



Use only Graco approved hoses. Do not remove any spring guard that is used to help protect the hose from rupture caused by kinks or bends near the couplings.

. Replace worn, damaged, or loose parts immediately

3307–756

Page 4

WARNING

FIRE AND EXPLOSION HAZARD

Improper result in a fire or explosion and serious injury



grounding, poor ventilation, open flames or sparks can cause a hazardous condition and

. Ground the equipment and the object being sprayed. Refer to If there is any static sparking or you feel an electric shock while using this equipment,

pensing immediately. Do not use the equipment until you identify and correct the problem.

Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed.

Keep the dispensing area free of debris, including solvent, rags, and gasoline. Electrically disconnect all equipment in the dispensing area. Extinguish all open flames or pilot lights in the dispensing area. Do not smoke in the dispensing area. Do not turn on or of Do not operate a gasoline engine in the dispensing area.

f any light switch in the dispensing area while operating or if fumes are present.

Grounding

on page 6.

TOXIC FLUID HAZARD

stop dis-

Hazardous inhaled, or swallowed.



Know the specific hazards of the fluid you are using.



Store hazardous fluid in an approved container state and national guidelines.



Always wear protective eyewear solvent manufacturer

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

, gloves, clothing and respirator as recommended by the fluid and

. Dispose of hazardous fluid according to all local,

4 307–756

Page 5

Notes

5307–756

Page 6

Installation

Grounding

o reduce the risk of static sparking, ground the pump and all other dispensing equipment used or located in the dispensing area. Check your local electrical code for detailed grounding instructions for your area and type of equipment. be sure to ground all of the follow ing equipment:

Pump or sprayer

separate pump or sprayer manual.

Air compressor or hydraulic power supply

according to local code and manufacturer’s recom mendations.

Fluid hoses

maximum of 500 ft (150 m) combined hose length to ensure grounding continuity

: ground as instructed in you

: ground

: use only grounded hoses with a

In-line valve

to a properly grounded fluid hose and pump or sprayer.

Fluid supply container

Object being sprayed

All solvent pails used when flushing

local code. Use only metal pails, which are con ductive. Do not place the pail on a non-conductive surface, such as paper or cardboard, which inter

rupts the grounding continuity

o maintain grounding continuity when flushing or

relieving pressure

valve firmly to the side of a grounded metal pail, then trigger the valve.

: obtain grounding through connection

: according to local code.

, according to

, always hold a metal part of the

6 307–756

Page 7

Installation

NOTE:

refer to the numbers and letters in the figures and Parts Drawing.

NOTE: To avoid leaks, use pipe sealant on the tapered

male pipe threads.

Several accessories area available for use with the In-Line Valve. Choose the application device that is best suited to your needs. See Fig. 1. Refer to the instructions supplied with each accessory for installa tion information.

Numbers and letters in parentheses in the text

Spray W

and

For easier valve movement, install a swivel (A) at the valve inlet.

Connect a grounded fluid hose to the swivel (A) or to the 1/4 npsm inlet fitting (7).

1/4 npt(m)

WARNING

Be sure your system has a fluid drain valve near the pump fluid outlet to help relieve fluid pressure in the pump, hose, and In-Line V the valve to relieve pressure may not be suf

alve; triggering

ficient.

Fig. 1

Roller

7525 A

7307–756

Page 8

Pressure Relief Procedure

WARNING

INJECTION

Fluid under high pressure can be in jected through the skin and cause

serious injury injury from injection, splashing fluid, or moving parts, follow the whenever you:



are instructed to relieve the pressure,



stop spraying/dispensing,



check or service any of the system equipment,



or install or clean the spray tip/nozzle.

HAZARD

. T

o reduce the risk of an

Pressure Relief Procedure

Operation

Disengage the valve safety knob.

Hold a metal part of the valve firmly to the side of a grounded metal waste container valve to relieve pressure.

Engage the valve safety knob.

Open the pump drain valve to help relieve fluid pressure in the pump, hose, and valve. T the valve to relieve pressure may not be suf Have a container ready to catch the drainage.

Leave the drain valve open until you area ready to use the system again.

, and trigger the

riggering

ficient.

Engage the valve safety knob.

Shut of any air bleed valves in the system.

With an electric sprayer, also unplug the power cord.

f the power supply to the pump and open

If you suspect that the valve, hose, application device, or spray tip is completely clogged or that pressure has not been fully relieved after following the steps above, very slowly loosen the tip guard retaining nut, outlet accessory nut, or hose end coupling and relieve pres sure gradually tip or hose obstruction.

, then loosen completely. Now clear the

8 307–756

Page 9

Startup

Operation

Start the pump/sprayer according to the instruction supplied with it.

WARNING

o reduce the risk of serious injury injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the

sure Relief Procedure

ing or servicing any part of the system, when installing, cleaning, or changing spray tips and whenever you stop spraying.

Whenever you stop spraying, even for a moment, always engage the valve safety knob. See Fig. 2 and instructions at right. Failure to turn the safety knob can result in the accidental triggering of the valve.

on page 8 before check

, including fluid

Pres-

WARNING

The wallet-sized warning card provided with this valve should be kept with the operator at all times. The card contains important treatment information should a fluid injection injury occur are available at no charge from Graco, Inc.

Refer to the Operation section of the manual for the application device you are using on the In-Line Valve.

If you are using a tip guard directly on the valve or a spray wand, do not install the spray tip until the pump/sprayer and system are fully primed.

. Additional cards

Always use the lowest pressure necessary to get the desired results. Higher pressure causes pre mature wear of the system, and if using a paint roller

, causes paint to squirt out, instead of flowing

evenly.

Use a full-open, full-close trigger action. Whenever you stop spraying, engage the safety knob.

How to Use the Safety Knob

engage the safety knob, turn the knob fully clock wise; this locks the needle in the forward position, making the valve inoperative. T knob, turn the knob fully counterclockwise. See Fig. 2.

04884

Fig. 2

o disengage the safety

engage safety knob

“ON SAFE”, turn knob fully clockwise.

o disengage safety knob

“OFF SAFE” , turn knob fully counterclockwise.

9307–756

Page 10

Maintenance

Lubrication

Oil

the exposed part of the valve rod (18) and trigger

pivot. See Fig. 3.

o check for proper needle adjustment, engage the safety knob (4) and check the trigger “free play”. It should be 1/8 –5/16 in. (3–8 mm). See Fig. 3. If it is not, adjust the needle as follows.

Daily Cleaning

WARNING

reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

on page 8.

WARNING

Before flushing, be sure the entire system and flushing pails are properly grounded. Refer to Grounding on page 6. remove the spray tip (if used) from the valve. Always use the lowest possible fluid pressure, and maintain firm metal-to-metal contact between the valve and pail during flushing to reduce the risk of fluid injection, static sparking, or splashing.

Use this cleanup procedure at the end of each work

day.

Relieve the pressure.

Relieve the pressure

, and

Adjusting the Needle

WARNING

o reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

Relieve the pressure.

Unscrew the safety knob assembly (4).

Hold the adjusting nut (13) with an adjustable wrench. See the Parts Drawing on page 12. Then thread the capscrew (1) a few turns into the adjust ing nut.

Push the adjusting nut (13) forward as far as possible and check for 1/8–5/16 in. (3–8 mm) free play

. See Fig. 3. Adjust the screw as necessary

and then tighten the adjusting nut.

Screw the safety knob (4) into the valve.

If necessary instructed on page 1

, disassemble and repair the valve as

on page 8.

Remove the spray tip, if used.

Flush the pump/sprayer and system as instructed in your separate pump/sprayer manual.

If you are using an adjustable extension, pump it in and out several times during flushing, then extend it and leave it extended while completing the flushing.

CAUTION

o avoid corrosion, never leave water or water-based

fluid in the valve overnight or longer If flushing with water

mineral spirits to protect the valve and packings from corrosion.

, be sure to follow the water with

Troubleshooting

If the valve keeps spraying after the trigger is released, the valve rod (18) may be obstructed, worn or dam aged, or may need adjusting.

10 307–756

Fig. 3

Free

Play 1/8–5/16 in. (3–8 mm)

Oil daily

04884

04885

Page 11

Service

Before

you start:

Be sure all the necessary repair parts are available. A packing repair kit, Part No. 220–445, is available. For the best results, use all the parts in the repair kit.

Disassembly

WARNING

o reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

Relieve the pressure

hose and dispensing device.

Unscrew the valve seat (19). See the Parts Draw ing on page 12. Unscrew the pivot screw (9) and remove the trigger (15).

Grasp the hex of the safety knob (4) with a 1

3. in. open end wrench and unscrew the knob as sembly from the valve body

Grasp the flats of the adjusting nut (13) with an adjustable wrench and pull it out far enough to loosen the cap screw (1) using a 3/32 in. socket head wrench.

on page 8.

. Then disconnect the fluid

1/16

Reassembly

Lubricate the smooth shaft of the rod (18). Insert the threaded end of the rod through the front of the valve and through the back.

One at a time, slide the male gland (12) and the six v-packings (10) [with the lips of the v-packings facing the front of the valve] onto the valve rod and slide them into the packing cavity male gland (1 cavity to help seat the packings.

Screw the packing screw (14) loosely into the cavity.

Install the trigger (15) and pivot (9).

Place a washer (2) on the valve rod and thread the

adjusting nut (13) onto it.

Hold the adjusting nut (13) with an adjustable wrench. Then thread the cap screw (1) a few turns into the adjusting nut.

Push the adjusting nut (13) forward as far as possible and check for 1/8–5/16 in. (3–8 mm) trigger free play necessary

1); press it gently into the packing

. See Fig. 3. Adjust the screw as

, and then tighten the adjusting nut.

. Insert the fe

WARNING

Use a 3/8 in. open end wrench to unscrew the packing screw (14).

Push the valve rod (18) out the front of the valve.

Use a hooked pick to carefully remove the v-pack ings (10) and glands (11, 12) from the valve.

Clean all parts thoroughly in a compatible solvent, dry and inspect for damage. Replace the parts as needed.

o reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

Screw the safety knob (4) into the valve.

Screw the valve seat (19) into the front of the valve and torque to 20–25 ft-lb (27–34 Nm). Be sure the washer (3) is in place between the seat and trigger guard.

10. T

ighten the packing screw (14) just enough to stop

leakage; over-tightening will result in leaking.

on page 8.

11307–756

Page 12

Parts

18*

19*

Torque

to 20–25 ft-lb (27–34 N-m)

12*

10*

Lips of V

must face front of valve

11*

-packings

7524A

12 307–756

Page 13

Parts

Ref No. Part No. Description Qty.

1 104–301 CAPSCREW 2* 151–395 WASHER, flat 1 3* 168–845 GASKET 4 210–170 SAFETY KNOB, trigger 1 5† 172–479 T 6† 179–761 T 7 162–453

9 165–086 SCREW 10* 165–672 V-PACKING; PTFE  6 11* 165–674 GLAND, female, brass 1 12* 165–675 GLAND, male, brass 1

AG, instruction (not shown)

AG. warning (not shown) NIPPLE, hex; 1/4 npsm x 1/4 npt, 1–3/16” long

, soc hd; #5–40 x 5/8”

, copper

, handle pivot

Ref No. Part No. Description Qty.

13 165–676 NUT 14 165–677 SCREW

15 190–660 TRIGGER, valve 1 16 181–595 HOUSING, valve, control 1

18* 205–629 ROD, valve 1 19* 220–228 SEAT, valve 1

20 224–707 GUARD, trigger;

21 110–037 SCREW

24† 179–960

* Supplied in Repair Kit 220–445.

† Extra warning cards and tags can be ordered from Graco at

no charge.

, adjusting

, packing

Includes warning plate

, ph hd mach; 310–24 x 1/2

CARD, warning (not shown)

1 1

1 1 1

13307–756

Page 14

Technical

Category Data

Maximum Fluid V Fluid Inlet Fluid Outlet W

etted Parts

Length Height 5 in. (127 mm) Weight

Delrin

Fluid W

alve Orifice Size

r r

is a registered trademark of the DuPont Co.

orking Pressure

3000 psi (21.0 MPa, 210 bar)

0.188 in. (4.78 mm) dia. 1/4 npsm 1/4 npt Aluminum, T

PTFE,r

8.125 in. (206 mm)

14 oz. (410 g)

Brass, Delrin

Data

ungsten Carbide, Stainless Steel, Zinc-plated Steel,

D This

Manual

manual was revised to include the changes from PCN C.

Change Summary

14 307–756

Page 15

Notes

15307–756

Page 16

The

Graco

warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in material any replace operated

This faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution Graco installation,

This verification equipment in transportation.

Graco’s remedy (including, but not limited to, incidental or consequential damages for lost other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two date

GRACO A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES, EQUIPMENT NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, gas engines,

switches, in

In hereunder, breach

and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the exception

special extended or limited warranty published by Graco, Graco will,

any part of the equipment determined by Graco to be defective. This warranty applies only when the

and maintained in accordance with Graco’

warranty does not cover

of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of

equipment with structures, accessories, equipment or materials not supplied by Graco, or the

operation or maintenance or structures, accessories, equipment or materials not supplied by Graco.

warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for

of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The

will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect

material or

of sale.

making any claim for breach of these warranties. no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment

workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor

sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above.

MAKES NO W

hose, etc.), are subject to the warranty

or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,

of warranty

, the negligence of Graco, or otherwise.

, and Graco shall not be liable

ARRANTY

, AND DISCLAIMS ALL

Graco W

s written recommendations.

for general wear and tear

IMPLIED W

, if any

, of their manufacturer

ARRANTIES OF MERCHANT

arranty

for a period of twelve months from the date of sale, repair or

equipment is installed,

, or any malfunction, damage or wear caused by

improper design, manufacture,

, and

The buyer agrees that no other

profits,

lost sales, injury to person or property

(2)

ABILITY AND FITNESS FOR

, MA

TERIALS OR COMPONENTS SOLD BUT

. Graco will provide purchaser with reasonable assistance

, or any

years of the

FOR

GRACO CANADA CUST

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 judiciaires

PLACE AN ORDER

avoir convenu que la rédaction du présente document sera en Anglais,

exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées.

OMERS

Graco

Phone Number

, contact your Graco distributor

1–800–367–4023 T

ainsi que tous documents, avis et procédures

, or call this number to identify the distributor closest to you:

oll 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.

Foreign Offices:

Sales Offices:

Belgium, Canada, England, Korea, France, Germany

GRACO INC. P.O. BOX 1441

PRINTED

IN U.S.A. 307–756 February 1986, Revised July 1997

Minneapolis, Detroit, Los Angeles

MINNEAPOLIS, MN

, Hong Kong, Japan

55440–1441

16 307–756

Graco 307-756 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual