Graco 205-627 Operation manual

306–726
Rev. R
Supersedes P
First choice when
quality counts.t
INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
Model 205–627, Series H
Pail length, for 5 or 10 gallons,
with Relax-A-Valve.
Model 205–628, Series H
Drum length for open-head drum,
with Relax-A-Valve
06698
Model 205–627 Shown
President 10:1 Ratio
Air Spray System
FOR NON-ABRASIVE FLUIDS
1800 psi (126 bar, 12.6 MPa) Maximum Working Pressure
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1996, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
Parts

2 306-726
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Repair 12. . . . . . . . . . . . . . . . . . . . .
Check Valve Adjustment 12. . . . . . . . . . . . . . . . . . . . . . .
Relax-A-Valve Repair 13. . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists and Drawings
Model 205–628 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 205–627 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relax-A-Valve 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 20. . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
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
instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not alter or modify this equipment.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure stated on the equipment or in the Technical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
DUse fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
DHandle hoses carefully. Do not pull on hoses to move equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66_C (150_F) or below –40_C (–40_F).
DWear hearing protection when operating this equipment.
DDo not move or lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

3306-726
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.
DFluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious
injury. Get immediate medical attention.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back”fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 8 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore checking or servicing the equipment, follow the Pressure Relief Procedure on page 8 to
prevent the equipment from starting unexpectedly.

4 306-726
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re-
sult in a fire or explosion and serious injury.
DGround the equipment and the object being sprayed. Refer to Grounding on page 5.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DBefore operating this equipment, electrically disconnect all equipment in the spray area.
DBefore operating this equipment, extinguish all open flames or pilot lights in the spray area.
DDo not smoke in the spray area.
DDo not turn on or off any light switch in the spray area while spraying or while operating if fumes
are present.
DDo not operate a gasoline engine in the spray area.
DNever use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents, or
fluids containing such solvents in this equipment. Such use could result in a serious chemical
reaction, with the possibility of explosion, which could cause death, serious injury, and/or substan-
tial property damage.
Consult your fluid suppliers to ensure that fluids being used are compatible with aluminum and zinc
parts.
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.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.

5306-726
Installation
General Information
NOTE: Reference numbers and letters in parentheses
refer to callouts in the Figs. and parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 4.
1. Pump: use a ground wire and clamp as shown in
Fig. 1. Loosen the grounding lug locknut (W) and
washer (X). Insert one end of a 12 ga (1.5 mm@)
minimum ground wire (Y) into the slot in lug (Z)
and tighten the locknut securely. Connect the other
end of the wire to a true earth ground. Order part
number 222–011 Grounding Clamp and Wire.
2. Air and fluid hoses: use only conductive hoses.
3. Air compressor: follow manufacturer’s recommen-
dations.
4. Spray gun or dispensing valve: ground through
connection to a grounded fluid hose and pump.
5. Fluid supply container: follow your local code.
6. Object being sprayed: follow your local code.
7. Solvent pails used when flushing: follow your local
code. Use only conductive metal pails, placed on a
grounded surface. Do not place the pail on a
nonconductive surface, such as paper or card-
board, which interrupts the grounding continuity.
8. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.
0720
Fig. 1
Y
W
ZX

6 306-726
Installation
NOTE: Reference numbers and letters in parentheses
in the text refer to callouts in the figure illustrations and
the parts drawing.
The Typical installation shown on page 7 is only a
guide to electing and installing required and optional
accessories. For assistance in designing a system to
suit your needs, contact your Graco representative.
Mount the pump to suit the type of installation planned.
The pump dimensions and mounting hole layout are
shown on page 17.
Pail and Drum Length Pumps
Install the pump in the drum or pail, using a suitable
cover, bung adapter, or mounting clamp. The pump
must be 1/2 in. (13 mm) off the bottom of the pail or
drum.
If the pump has a drain back tube, connect a drain
hose to it and route the hose back to the supply con-
tainer.
NOTE: In a closed-head drum, be sure to loosen the
vent plug in the drum cover to prevent formation of a
vacuum.
WARNING
Two accessories are required in your system: a
bleed-type master air valve (A), if your pump does
not have a Relax-A-Valve, and a fluid drain valve
(H). These accessories help reduce the risk of
serious injury including injection, splashing in the
eyes, and injury from moving parts if you are
adjusting or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the air
regulator is shut off. Trapped air can cause the
pump to cycle unexpectedly. Locate the valve close
to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun;
triggering the gun to relieve pressure may not be
sufficient.
Pumps With Relax-A-Valve
An Evenflo air regulator may be installed on pumps
having a Relax-A-Valve. This regulator prevents initial
surging of non-atomized fluid when the gun is trig-
gered. Air pressure in the pump is relieved automati-
cally each time the gun trigger is released. When used
with a Relax-A-Valve set in the automatic position, fluid
pressure is relieved automatically also.

7306-726
Installation
All Pumps
Install the air line accessories in the approximate order
shown in the Typical Installation drawing. A pump
runaway valve (B) senses when the pump is running
too fast and shuts off the air supply to the motor. For
automatic air motor lubrication, install an air line lubri-
cator (D). (For manual lubrication, see Maintenance on
page 10). Install the bleed-type master air valve (A)
within easy reach of the pump. Install an air regulator
(E) to control air to the motor and pump speed. An air
line filter (C) removes harmful dirt and moisture from
your compressed air supply.
Be sure that the air supply hose is properly grounded,
and is at least 1.2 in. (13 mm) ID in order to supply an
adequate volume of air to the motor.
On the fluid line, install a drain valve (H) close to the
fluid outlet to assist in relieving fluid pressure (not
required in pumps having a Relax-A-Valve). Connect a
suitable grounded fluid hose and spray gun or dispens-
ing valve to the pump’s 3/4 in. npt outlet.
Typical Installation
06706
KEY
A
B
C
D
E
H
J
K
L
20,
21
Bleed-Type Master Air Valve
Pump Runaway Valve
Air Line Filter
Air Line Lubricator
Pump Air Regulator
Drain Valve
Pump Ground Wire
Grounded Fluid Hose
Grounded Air Hose
Relax-A-Valve
Drain Back Tube
1/2”Minimum
A
L
CA20
21
EDB
J
HK

8 306-726
Operation
Pressure Relief Procedure
With the Evenflo control, its bypass valve, and the
pump Relax-A-Valve properly set, fluid pressure is
relieved from the pump and hose each time you re-
lease the gun trigger. Always engage the gun trigger
safety when you stop spraying. To relieve air pressure,
close the Evenflo regulators and open the bleed-type
master air valve.
WARNING
INJECTION HAZARD
If you suspect that the Evenflo system is
not properly set, or that pressure is not
fully relieved, 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, fol-
low the Pressure Relief Procedure whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1. Engage the spray gun or dispensing valve safety
latch.
2. Close the pump air regulator.
3. Close the master bleed-type air valve (required).
4. Disengage the gun or dispensing valve safety
latch.
5. Hold a metal part of the gun/valve firmly to a
grounded metal waste container and trigger to
relieve fluid pressure.
6. Engage the safety latch again.
7. Open the pump drain valve (required in your
system), having a container to catch the drainage.
NOTE: If your pump has a Relax-A-Valve set in the
automatic position, step 7 is not necessary.
8. Leave the drain valve open until you are ready to
spray again.
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. Now clear
the tip or hose.
WARNING
Never operate the pump with the air motor plate
removed. Moving parts in the piston can pinch or
amputate fingers.
Startup
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
The pump was tested in oil, and some oil was left in
the pump to protect it from corrosion. if the oil will
contaminate the fluid your are pumping, flush it out.
To start the pump, close the fluid drain valve (H). Open
the bleed-type master air valves (A). Holding a metal
part of the spray gun/dispensing valve firmly against
the side of a grounded metal pail, hold the trigger open
while slowly opening the air regulator (E), Run the
pump slowly until all air is purged from the gun/valve.
Release the trigger and engage the safety latch (if
applicable).
Use the air regulator (E) to control fluid pressure and
pump speed. Always use the lowest pressure neces-
sary to get the desired results. Higher pressures cause
premature pump wear and spray tip wear, and usually
do not improve the spray pattern.
WARNING
To reduce the risk of overpressurizing your system,
which could result in component rupture and cause
serious injury, never exceed the maximum working
pressure of the lowest rated component in your
system. Lowering the air pressure to the motor will
proportionately lower the fluid outlet pressure from
the pump. Refer to the Technical Data on page 16
for the maximum air and fluid working pressure of
this pump.

9306-726
Operation
Using the Relax-A-Valve
If your pump has a Relax-A-Valve, it can be used to
mix fluid by circulation (except in inductor-type follow
plate installations), and it can be set to relieve fluid line
pressure each time the pump air pressure is relieved.
To circulate fluid, open the Relax-A-Valve by loosening
the locknut (119) and turning the T-handle screw (110)
counterclockwise as far as possible. Start the pump
and circulate the fluid as necessary. Stop the pump
and close the Relax-A-Valve or set it in the automatic
position. See Fig. 2.
To set the automatic position, loosen the locknut (119)
and turn the T-handle screw (110) clockwise as far as
possible. Back off the T-handle screw four turns and
tighten the locknut. During normal operation, the fluid
pressure is relieved automatically each time the air
pressure to the pump is relieved.
NOTE: If your installation includes an Evenflo pressure
regulator, air to the pump is automatically relieved
each time your close the gun trigger, and the Relax--A-
Valve, in turn, relieves fluid pressure.
Without an Evenflo, the bleed-type master air valve (A)
should be used to relieve pump air pressure.
Fig. 2 06698
119
110
In a direct supply system, with adequate air pressure
supplied to the motor, the pump starts when the gun or
dispensing valve is opened, and stalls against pres-
sure when it is closed.
If the pump accelerates quickly or is running too fast,
stop it immediately. Check the fluid supply and refill it if
necessary. Prime the pump to remove all air from the
system, or flush the pump, relieve the pressure, but
leave the system filled with mineral spirits or an oil-
based solvent to protect the pump from corrosion.
NOTE: A pump runaway valve (B) can be installed on
the air line to automatically shut off the pump if it starts
to run too fast.
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Relieve the pressure whenever you stop spraying.
Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the rod and damaging the
throat packings.
If you are pumping fluid which dries, hardens, or sets
up, flush the system with a compatible solvent as often
as necessary to prevent a build up of dried fluid in the
pump or hoses.

10 306-726
Maintenance
Lubrication
If your system includes an automatic air line lubricator,
adjust the lubricator as instructed in the separate
instruction manual.
For manual lubrication, each day, remove the air inlet
hose and place 12 to 15 drops of high quality, light
motor oil in the inlet. Reattach the hose and turn on the
air to blow the oil into the motor.
Throat Packing Adjustment
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Once a week, or after each 40 hours of operation,
check the tightness of the throat packing nut. It should
be tight enough to stop leakage, but no tighter.
To check, first relieve the pressure. Then, remove the
identification plate (M) from the motor. Using a spanner
wrench or a 0.22 in (5.6 mm) diameter rod, adjust the
nut. Reinstall the identification plate before operating
the pump. See Fig. 3.
Flushing
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
To reduce the risk of injection injury, static sparking, or
splashing in the eyes or on the skin, relieve the pres-
sure. Then, remove the spray tip (spray guns or spray
valves only) before flushing. Hold a metal part of the
gun/valve firmly to the side of a grounded metal pail
and use the lowest possible fluid pressure during
flushing.
Fig. 3
06701
MPacking
Nut
Leather
Throat
Packings
Corrosion Protection
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
CAUTION
Water, or even moist air, can cause your pump to
corrode. To help prevent corrosion, never leave the
pump filled with water-based fluid or air. After normal
flushing, flush the pump again with mineral spirits or
oil-based solvent, and relieve the pressure. This
leaves the mineral spirits in the pump.

11306-726
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Relieve the pressure before you check or service any
system equipment.
NOTE: Check all possible problems and solutions
before disassembling the pump.
WARNING
Never operate the pump with the air motor plate
removed. Moving parts in the piston can pinch or
amputate fingers.
Problem Cause Solution
Pump does not operate, or no Loose or broken pump parts Disassemble, check, repair
fluid flow Restricted line or inadequate air sup-
ply Clear, increase
Exhausted fluid supply Refill and prime
Clogged fluid hoses Clean, or replace
Fluid intake or piston valves need
adjustment Adjust, see page 12
Damaged air motor Repair; see 306–982
Pump operates, but output is low Insufficient air supply Increase
Exhausted fluid supply Refill and prime
Obstructed gun or dispensing valve Clear
Damaged fluid pump packings Replace, see page 12
Held open or worn piston or intake
valve Repair; see page 12
Erratic or accelerated operation Exhausted fluid supply Refill and prime
Fluid intake or piston valve worn Repair; see page 12

12 306-726
Service
Displacement Pump Repair
Before you start:
1. A packing repair kit, part no. 237–498 is available.
This kit includes two glands and eight packings for
the motor as well as o-rings, packings, and wash-
ers for the displacement pump. For the best re-
sults use all the parts in the kit.
2. Clean all parts as you disassemble them, using a
compatible solvent, and inspect for wear or dam-
age. Replace parts as necessary.
Intake Valve (See Fig. 4)
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure.
2. Unscrew the intake valve housing (15).
3. Remove the ball stop pin (17). Inspect the ball (4)
and seat (19a) for nicks or scratches.
4. Replace the ball and/or seat if it is damaged, as
damaged parts do not seal properly and may
cause poor pump performance.
5. If no further service is needed reassemble the
intake valve. Be sure the ball stop pin (17) is
reinstalled in the proper holes. See Check Valve
Adjustment at right.
Piston
6. Unscrew the riser tube (9) from the pump base.
Clean the tube and inspect it for wear by holding it
up to a light at a slight angle. If you see wavy lines
or scratches where the piston travels, replace the
tube as it will not seal well with the new piston
packings and the pump will perform poorly.
7. Loosen the locknut (2) and unscrew the piston (8)
from the connecting rod (16).
8. Disassemble and clean all parts.
9. Reassemble the piston, using all the new parts
from the kit and any other new parts needed. Oil
the leather packings (10*) first. Then, reassemble
the parts on the piston seat (7) in this order; back-
up washer (13), spreader (11), leather
packing (10*), spacer (14) with a new o-ring (5)
installed on it, another leather packing (10*),
spreader (11) and backup washer (13*).
NOTE: To replace the throat packings, follow the steps
given in your separate air motor manual, 306–392,
supplied, before continuing with this procedure.
10. Apply sealant to the threads of the seat (7) and
screw onto the piston body (8). Screw the piston
onto the connecting rod (16) and adjust the ball
travel as instructed in Check Valve Adjustment,
below. Tighten the locknut (2).
11. Check the o-ring (6) in the pump base and replace
it if necessary.
12. Lubricate the piston packings and the inner wall at
the top of the riser tube (9). Wrap the packings
with a guide collar made of 1/64 in. maximum
thickness shim stock or metal sheeting. Using a
turning motion, work the first leather packing into
the riser tube. Remove the guide collar and push
the riser tube up and screw it into the base. Torque
the tube to 100–150 ft-lb (135–204 NSm).
Reassembly
1. Be sure the check valves are properly adjusted.
See below.
2. Reinstall the intake valve.
3. Reconnect the pump’s ground wire to a true earth
ground.
Check Valve Adjustment
These pumps have adjustable fluid intake and piston
ball checks, which are factory-set for medium viscosity
fluids.
To change the piston ball travel, loosen the lock-
nut (2). Turn the piston body (8) counterclockwise to
increase and clockwise to decrease. Medium viscosity
fluids should have a 3/16 in (5 mm) ball travel. See
Fig. 5. Decreasing the ball travel minimizes surging at
stroke changeover, but too short a ball travel restricts
the flow and slows down the pump.
To change the intake valve ball travel, move the ball
stop pin (17) to a higher or lower set of holes. Use the
middle holes for medium viscosity fluids.

13306-726
Service
Relax-A-Valve Repair
To remove an obstruction from the valve, loosen the
locknut (119) and turn the T-handle completely coun-
terclockwise. Turn on the pump and operate to flush
out the obstruction. Stop the pump and relieve the
pressure. Reset the Relax-A-Valve to the automatic
position (See page 9).
If further repair is needed, relieve the pressure. Un-
screw the valve housing (114) and seat (118) from the
pump base. See Fig. 6.
Clean and inspect the seat and tip (117c) for wear or
damage, replacing parts as necessary.
Check the piston travel. Unscrew the cap (115) from
the housing. Check for a 1/4 in. (6 mm) clearance
between the stop nut (112) and the jam nut (103). If
adjustment is necessary, loosen the jam nut and turn
the adjusting stem (111) in or out until you obtain the
proper clearance. See Fig. 6. Tighten the jam nut.
Reassemble the Relax-A-Valve in the reverse order.
Fig. 4
Fig. 5 Fig. 6
06700
06703 06704
6
2
1
9
8
10*
10*
17
13*
19a
19b
15
11*
14
5
11*
7
16
1
21
4
3
13*
Torque to 100–150 ft-lb
(135–204 NSm)
15
4
119
115
103
112
111
117c
114
118
2
8
19
2
2Torque to 100–150 ft-lb
(136–204 NSm)
3/16”Piston
Ball Travel

14 306-726
Parts
06699
17
15
19a
19b
4
9
6
7
*13
11*
*10
5*
14
10*
*11
13*
3
8
2
16
21
20
22
12
18
1
19
Model 205–628, Series H
Includes items 1–22
Ref.
No. Part No. Description Qty.
1 100–103 PIN, cotter; 1/8”dia x 1–1/2”1
2 100–111 NUT, hex, jam; 1/2–20 1
3 100–279 BALL, steel; 7/8”dia. 1
4 101–178 BALL, steel; 1–1/4”dia. 1
5* 154–662 O-RING; buna–N1
6 156–641 O-RING; buna–N1
7 156–989 SEAT, fluid piston valve 1
8 157–184 BODY, fluid piston 1
9 158–399 TUBE, riser; 32.75”(832 mm) 1
10* 158–402 PACKING, cup; leather 2
11* 171–590 WASHER, spreader 2
12 158–586 BUSHING, pipe; 1”npt(m) x 3/4 npt(f) 1
13* 171–594 WASHER, backup 2
14 158–857 SPACER, fluid piston packing 1
15 159–839 HOUSING, intake valve 1
16 164–928 ROD, comm.; 22.325”(643 mm) 1
17 160–726 STOP, ball, intake ball 1
18 205–647 AIR MOTOR
See manual 306–982 for parts 1
19 204–762 FOOT VALVE BODY & SEAT ASSY
Includes items 19a and 19b 1
19a 161–521 . SEAT, foot valve 1
19b 161–820 . SEAT, ball 1
20 206–280 RELAX-A-VALVE ASSEMBLY
See parts list on page 16 1
21 100–992 TUBE, drain back 1
22 158–256 ADAPTER, air inlet;
1/2 npt(m) x 3/8 npsm(f) swivel 1
* Included in repair kit 237–498

15306-726
Parts
06700
17
15
19a
19b
4
9
7
*13
11*
14
5*
10*
10*
11*
13*
3
8
2
16
6
28a
28b 9
22
23
1
12
18
24 25
19
28
21
Model 205–627, Series H
Includes items 1–28
Ref.
No. Part No. Description Qty.
1 100–103 PIN, cotter; 1/8”dia x 1–1/2”1
2 100–111 NUT, hex, jam; 1/2–20 1
3 100–279 BALL, steel; 7/8”dia. 1
4 101–178 BALL, steel; 1–1/4”dia. 1
5* 154–662 O-RING; buna–N1
6 156–641 O-RING; buna–N1
7 156–989 SEAT, fluid piston valve 1
8 157–184 BODY, fluid piston 1
9 159–258 TUBE, riser; 17”(432 mm) 1
10* 158–402 PACKING, cup; leather 2
11* 171–590 WASHER, spreader 2
12 158–555 NIPPLE, reducing;
1”npt(m) x 3/4 npt(f) 1
13* 171–594 WASHER, backup 2
14 158–857 SPACER, fluid piston packing 1
15 159–839 HOUSING, intake valve 1
16 164–927 ROD, comm.; 9.625”(244.5 mm) 1
17 160–726 STOP, ball, intake ball 1
18 205–647 AIR MOTOR
See manual 306–982 for parts 1
19 204–762 FOOT VALVE BODY & SEAT ASSY
Includes items 19a and 19b 1
19a 161–521 . SEAT, foot valve 1
19b 161–820 . SEAT, ball 1
20 206–280 RELAX-A-VALVE ASSEMBLY
See parts list on page 16 1
21 100–992 TUBE, drain back 1
22 159–445 PLUG, 1–3/8–12 NF2 thread 1
23 159–446 GASKET, vellumoid 1
24 159–890 GASKET, copper 1
25 157–834 PLUG; 5/8–18 NF2 thread 1
28 222–308 BUNG ADAPTER ASSEMBLY
Includes items 28a and 28b 1
28a 104–542 . SCREW, cap hex hd; M8 x 1.25 1
28b 210–834 . ADAPTER, bung 1
* Included in repair kit 237–498

16 306-726
Parts
06704
110
119
115
108
106
113
103
112
111
101
107
117a
117c
117b
114
105
109
107
104
118
116
Ref. No. 20
Model 206–280
Includes items 101–119
Ref.
No. Part No. Description Qty.
101 100–694 LOCKWASHER, internal, shkprf; 7/16”1
102 100–992 TUBE, drain back 1
103 101–345 NUT, hex, jam; 1/4–20 1
104 101–389 SEAL, leather 1
105 153–996 SPRING, compression 1
106 154–594 O-RING, Buna-N 1
107 154–662 O-RING 2
108 155–508 GASKET, vellumoid 1
109 156–633 O-RING, Buna-N 1
Ref.
No. Part No. Description Qty.
110 157–131 HANDLE, valve tee 1
111 158–389 STEM, adjusting 1
112 158–390 NUT, stop 1
113 158–391 SCREW, adjusting 1
114 158–393 HOUSING, relax-a-valve 1
115 158–396 CAP, relax-a-valve 1
116 159–890 GASKET, copper 1
117 203–376 STEM ASSEMBLY
Includes items 117a–117c 1
117a 159–050 . STEM, valve 1
117b 101–379 . PIN, spring, straight 1
117c 203–375 . TIP, needle valve 1
118 203–374 SEAT ASSEMBLY 1
119 100–111 NUT, hex, jam; 1/2–20 2
Technical Data
Fluid pressure ratio 10:1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air pressure operating range 40–180 psi (3–12 bar). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum fluid working pressure 1800 psi (124 bar). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum recommended pump speed 60 cycles/minute. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delivery (continuous duty) 3 gpm (12 liter/min). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delivery (intermittent duty) 6 gpm (25 liter/min). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cycles per gallon (liter) 20 (6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air motor effective diameter 4–1/4 in. (108 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump stroke 4 in. (100 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air consumption Approx. 13 CFM per gallon (6m#/hr/liter) of fluid at 100 psi (7 bar). . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wetted parts Steel, Aluminum, Brass, Leather, Buna-N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17306-726
Dimensions
1”
(25.4 mm)
1–1/4”
(31.8 mm)
14–1/2”
(368.3 mm)
6–3/4”
(171.4 mm) 1–1/2”
(38.1 mm)
2”
(50.8 mm)
3/8 npt 11/16”
(17.5 mm) OD
45_
45_
6–1/2”
(165.1 mm)
6–1/2”
(165.1 mm)
2–3/32”
(53.2 mm)
2”
(50.8 mm)
2–5/8”
(66.7 mm)
3/8”(8.3 mm)
Four 1/4”–20 Holes
on a 4–1/4”(108 mm)
Dia. Bolt Circle
Bottom View

18 306-726
Dimensions
06713
Model 205–628, Series H
Weight: 40 lb (18 Kg)
48–3/4”
(1238.3 mm)
3/8 npsm
2–1/4”(47.2 mm)
34–1/4”
(870 mm)
4”(101.6 mm)
33”
(838 mm)
18–1/2”
(470 mm)
5”(127 mm)
3/4 npt
1/2 npt
Model 205–627, Series H
Weight: 29 lb (13 Kg)
3/4 npt
2–1/4”(47.2 mm)
Manual Change Summary
The manual has been changed per ECO V5955.

19306-726
Notes

20 306-726
The 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 accor-
dance 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 sub-
stitution 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 reconnais-
sent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires
exécutés, donnés ou intentés àla 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
Foreign Offices: Belgium, England, Korea, France, Germany, Hong Kong, Japan
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
http://www.graco.com
PRINTED IN U.S.A. 306–726 September 1961, Revised November 1998