Graco Monark Hydra-Spray D Series Operation manual

307–620
Rev. M
Supersedes J
and PCN K
First choice when
quality counts. 

INSTRUCTIONS-PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
PORTABLE OR WALL MOUNT
23:1 Ratio Monark 
Hydra-Spray Sprayers
120 psi (0.8 MPa, 8 bar) Maximum Air Input Pressure
2760 psi (19.3 MPa, 193 bar) Maximum Fluid Working Pressure
Model 231–048, Series D
portable caster cart with severe-duty
displacement pump*, hose, and gun
Model 224–626, Series A
portable universal cart with severe-duty
displacement pump*
Model 231–159,
portable universal cart with severe-duty
displacement pump*, hose, and gun
† Model 226–968, Series A
wall mount with severe-duty displacement
pump*, hose, and gun
*Severe-duty displacement pumps have
abrasion-resistant displacement rods
and sleeves. Refer to T echnical Data in
the pump manual 307–619 for wetted
parts information.
†
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Graco Inc. is registered to I.S. EN ISO 9001

 
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
Grounding 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Accessories 7. . . . . . . . . . . . . . . . . . . . . . . . .
Assembling the Sprayer 8. . . . . . . . . . . . . . . . . . . . . .
Operation/Maintenance
Pressure
Relief Procedure 9. . . . . . . . . . . . . . . . . . . .
Wet-Cup 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting and Adjusting the Pump 9. . . . . . . . . . . . . .
Shutdown and Care of the Pump 10. . . . . . . . . . . . .
Flushing the Pump 10. . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawings and Lists
Model 231–048 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 226–968 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 224–626 and 231–159 14. . . . . . . . . . . . . . .
Technical Data 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Numbers 16. . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
his symbol alerts you to the possibility of serious
injury or death if you do not follow the corresponding
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.
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury .
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, contact your Graco distribu -
tor.
D
Do not alter or modify this equipment.
D Check equipment daily . Repair or replace worn or damaged parts immediately .
D
Do not exceed the maximum working pressure of the lowest rated system component. Refer to
the T echnical Data on page 15 for the maximum working pressure of this equipment.
D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the
T echnical Data section of all equipment manuals. Read the fluid and solvent manufacturer ’s
warnings.
D
Do not use hoses to pull equipment.
D 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 _F).
D
Do not lift pressurized equipment.
DW ear hearing protection when operating this equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
WARNING
INSTRUCTIONS


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 into the eyes or onto the
skin can also cause serious injury .
 Fluid injected into the skin might look like just a cut, but it is a serious injury . Get immediate
medical attention.

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 leaks with your hand, body , glove or rag.
 Do not “blow back” fluid; this is not an air spray system.
 Always have the tip guard and the trigger guard on the gun when spraying.
 Check the gun dif fuser operation weekly . Refer to the gun manual.
 Be sure the gun trigger safety operates before spraying.
 Lock the gun trigger safety when you stop spraying.
 Follow the Pressure Relief Procedure on page 9 if the spray tip clogs and before cleaning,
checking, or servicing the equipment.
T ighten all fluid connections before operating the equipment.
 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.
 Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by
kinks or bends near the couplings.
WARNING
WARNING
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed into the eyes or onto the
skin, inhaled, or swallowed.
 Know the specific hazards of the fluid you are using.
 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 a respirator as recommended by the fluid
and solvent manufacturer .

4 307-620
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury
.

Ground the equipment and the object being sprayed. Refer to Grounding on page 5.
 If there is any static sparking or you feel an electric shock while using this equipment, stop
spraying 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 spray area free of debris, including solvent, rags, and gasoline.
 Electrically disconnect all equipment in the spray area.
 Extinguish all open flames or pilot lights in the spray area.
 Do not smoke in the spray area.
 Do not turn on or of f any light switch in the spray area while operating or if fumes are present.
 Do not operate a gasoline engine in the spray area.
WARNING
WARNING
MOVING P ARTS HAZARD
Moving parts, such as the air motor piston, can pinch or amputate your fingers.
 Keep clear of all moving parts when starting or operating the pump.
 Before servicing the equipment, follow the Pressure Relief Procedure on page 9 to prevent
the equipment from starting unexpectedly .

5307-620
Installation
NOTES:

Reference numbers and letters in parentheses in
the text refer to the callouts in the figures and
drawings.

Accessories are available from your Graco
representative. If you supply your own
accessories, be sure they are adequately sized and
pressure-rated to meet the system’s requirements.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE AND EXPLOSION
HAZARD on page 4.
 Pump: Use the ground wire and clamp. See
Fig. 1. Loosen the grounding lug locknut (W) and
washer (X). Insert one end of the ground wire (Y)
into the slot in the lug (Z), and tighten the locknut
securely . Connect the other end of the wire to a
true earth ground.
For a ground wire and clamp, order
Part No. 237–569.
W
Y
X
Z

Fig. 1
 Air and fluid hoses: Use only grounded hoses with
500 ft (150 m) maximum combined hose length to
ensure grounding continuity .

Air compressor: Follow manufacturer ’s
recommendations.

Spray gun or dispensing valve: Connect to a
properly grounded fluid hose and pump.
 Object being sprayed: Follow your local code.
 Fluid supply container: Follow your local code.
 Solvent pails used when flushing: Follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding
continuity.
T
o maintain proper grounding continuity when
flushing or relieving pressure, always hold the metal
part of the spray gun firmly to the side of a
grounded metal pail, then trigger the gun.

 
Installation
Typical
The T ypical Installation shown in Fig. 2 is only a guide for selecting and installing system components and
accessories. Contact your Graco distributor for assistance in designing a system to suit your particular needs.
KEY
A Main air line
B Bleed-type master air valve
(for accessories)
C Air line filter
D Air regulator
E Bleed-type master air valve
(for pump)
F Pump
G
Fluid filter
H Fluid drain valve
J Fluid hose
K Airless spray gun
L Pump fluid inlet elbow
M Suction hose
N Suction tube
Y Ground wire
A
BC
D
E
F
G
Y
H
J
K
L
MN
If air line lubricator
is used, install it
downstream from
the bleed valve (E).
Model 226–968 shown
0948
Fig. 2


Installation
System Accessories
WARNING
A bleed-type master air valve (E) and a fluid drain
valve (H) are required in your system. These
accessories help reduce the risk of serious bodily
injury including fluid injection, splashing in the eyes
or on the skin, 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 is
shut of f. T rapped air can cause the pump to cycle
unexpectedly . Locate the valve close to the pump.
Order Part No. 1 13–269.
The fluid drain valve assists in relieving fluid pres -
sure in the displacement pump, hose, and gun.
T riggering the gun to relieve pressure may not be
suf ficient. Never connect a secondary hose or
spray gun to the fluid drain valve. The fluid drain
valve is used only to help relieve fluid pressure in
the displacement pump, hose, and gun.
Air Line Accessories
Install the following accessories in the order shown in
Fig. 2, using adapters as necessary:
Air line lubricator (not shown)
Install downstream from the air regulator (D) and
bleed valve (E) to provide automatic air motor
lubrication.
 Bleed-type master air valve (E)
Install downstream from the air regulator (D), and
in a place that is easily accessible from the pump,
to relieve air trapped between it and the air motor
when the valve is closed (see the Warning above).
 Air regulator (D)
Install close to the pump, but upstream from the
bleed-type master air valve to control pump speed
and outlet pressure by adjusting the air pressure to
the pump.
 Air line filter (C)
Install in the main air line (A) to remove harmful dirt
and moisture from the compressed air supply .
Second
bleed-type air valve (B)
Install in the main air line (A) to isolate the
accessories for servicing. Install it upstream from
any other air line accessories.
Fluid Line Accessories
Install the following accessories in the positions shown
in Fig. 2, using adapters as necessary:
Fluid drain valve (H)
Install so that it points down, and the handle points
up when it is opened, to relieve fluid pressure in the
hose and gun (see the Warning at left).
Fluid filter (G)
Install as shown in the Parts drawings on pages 12
through 14 to to filter harmful particles from the
fluid.

Spray gun (K)
Install on the end of the fluid hose (J) to dispense
the fluid. The gun shown in Fig. 2 is an airless
spray gun.

 
Installation
Assembling the Sprayer
Model 231–048 (see page 12)
1. Push the four casters (25) into the stand (26).
2. Apply thread sealant, and screw the drain valve
(31) into the fluid filter (16). Screw the elbow (32)
onto the valve (31) so the male end of the elbow
faces down.
3. Connect the gun swivel (4) and fluid hose (6) to
the spray gun (8), and tighten them securely . Do
not use thread sealant. Do not install the spray tip
(27) in the gun yet. Before you install the spray
tip, see Starting and Adjusting the Pump on
page 9.
4. Screw the fluid hose (6) onto the nipple (35) at the
outlet of the fluid filter (16), and tighten it securely .
5. Connect the suction hose (13) to the pump inlet
adapter (5). Connect the tube (23) to the suction
hose.
Model 226–968 (see page 13)
1.
Using thread sealant, install the nipple (107), bleed
valve (136), and air regulator (109) at the pump air
inlet. Install the air gauge (108) in the regulator .
2. T o mount the wall bracket (1 13), refer to its
separate manual (supplied). Mount the pump on
the bracket.
3. Apply thread sealant and screw the nipple (129)
into the outlet of the fluid filter (101). Install the
long nipple (102) and filter (101) at the pump fluid
outlet.
4.
Connect the gun swivel (128) and fluid hose (1 17)
to the fluid inlet of the spray gun (1 15), and tighten
them securely . Do not use thread sealant. Do not
install the spray tip (1 16) in the gun yet. Before
you install the spray tip, see Starting and
Adjusting the Pump on page 9.
5. Screw the fluid hose (1 17) onto the nipple (129) at
the outlet of the fluid filter (101), and tighten it
securely.
6.
Screw the inlet adapter (1 14) onto the pump
intake. Connect the suction hose (120) to the
pump inlet adapter (1 14). Connect the tube (1 18)
to the suction hose.
Models 224–626 and 231–159 (see page 14)
Model 224–626 is shipped completely assembled.
T o assemble Model 231–159:
1. Connect the gun swivel (244) and fluid hose (245)
to the fluid inlet of the spray gun (246), and tighten
them securely . Do not use thread sealant. Do not
install the spray tip (247) in the gun yet. Before
you install the spray tip, see Starting and
Adjusting the Pump on page 9.
2. Screw the fluid hose (245) onto the nipple (222) at
the outlet of the fluid filter (232), and tighten it
securely.


Operation/Maintenance
Pressure Relief Procedure
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 . T o reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
 are instructed to relieve the pressure
 stop spraying
 check or service any of the system equipment
 install or clean the spray tip
INJECTION HAZARD
WARNING
1. Lock the gun trigger safety .
2.
Shut of f the air supply to the pump.
3. Close the bleed-type master air valve (required in
your system).
4. Unlock the gun trigger safety .
5.
Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
6.
Lock the gun trigger safety .
7.
Open the drain valve (required in your system),
and have a container ready to catch the drainage.
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, slowly loosen the tip
guard retaining nut or hose end coupling and relieve
pressure gradually , then loosen it completely . Then
clear the tip or hose.
Wet-Cup
Keep the wet-cup filled with Graco Throat Seal Liquid
(TSL) or compatible solvent to help prolong the
packing life. See manual 307–619 for additional care
instructions.
NOTE: Flush the pump before first use.
The pump is tested with lightweight oil, which is left in
to protect the pump parts. If the fluid you are using
may be contaminated by the oil, flush the pump out
with a compatible solvent before using the sprayer .
See Flushing the Pump on page 10.
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself. If your pump
accelerates quickly , or is running too fast, stop it
immediately and check the fluid supply. If the supply
container is empty and air has been pumped into the
lines, refill the container and prime the pump and the
lines with fluid, or flush and leave it filled with a
compatible solvent. Be sure to eliminate all air from
the fluid system.
Starting and Adjusting the Pump
Begin these steps before you install the spray tip.
1. Ensure that the air regulator (D) and bleed-type
master air valve (E) are closed. See Fig. 2 on
page 6.
2. Connect a suction hose (M) to the pump’ s fluid
inlet, or lower the pump into a fluid supply
container.
3.
Hold a metal part of the spray gun (K) firmly to the
side of a grounded metal pail and hold the trigger
open.
4.
Open the pump’ s bleed-type master air valve (B).
5. Slowly open the air regulator (D) until the pump
starts (at approximately 40 psi [2.8 bar]).
6. Cycle the pump slowly until all the air is pushed
out and the pump and hoses are fully primed.
7. Release the spray gun trigger and lock the trigger
safety . The pump should stall against pressure
when you release the trigger .

10 307-620
Operation/Maintenance
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
8. Relieve the pressure .
9.
Install the spray tip in the gun.
10. Control the pump speed and fluid pressure with
the air regulator (D). Always use the lowest air
pressure necessary to get the desired results.
Higher pressure causes premature spray tip and
pump wear .
WARNING
COMPONENT RUPTURE HAZARD
T o reduce the risk of overpressurizing
your system, which could cause com -
ponent rupture and serious injury , never
exceed the specified maximum incoming air pres -
sure to the pump (see T echnical Data on page
15).
With the pump and lines primed, and with adequate air
pressure and volume supplied, the pump starts and
stops as the spray gun is opened and closed. In a
circulating system, the pump runs continuously and
speeds up or slows down as supply increases or
decreases until the air supply is shut of f.
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 9.
For overnight shutdown, relieve the pressure , and
always stop the pump at the bottom of the stroke to
prevent the fluid from drying on the exposed
displacement rod and damaging the throat packings.
Always flush the pump before the fluid dries on the
displacement rod. See Flushing the Pump.
Flushing the Pump
FIRE AND EXPLOSION HAZARD
Before flushing, read the section FIRE
AND EXPLOSION HAZARD on page
4. Be sure the entire system and flush -
ing pails are properly grounded. Refer to
Grounding on page 5.
WARNING
Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing frequency .
Always flush the pump before fluid dries on the
displacement rod.
Never leave water or water-base fluid in the pump
overnight. If you are pumping water-base fluid,
flush with water first, then with a rust inhibitor such
as mineral spirits. Relieve the pressure, but leave
the rust inhibitor in the pump to protect the parts
from corrosion.
CAUTION
WARNING
T o reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 9.
1. Relieve the pressure.
2. Remove the spray tip from the gun.
3. Hold a metal part of the gun firmly to the side of a
grounded metal pail.
4. Start the pump. Always use the lowest possible
fluid pressure when flushing.
5. T rigger the gun.
6. Flush the system until clear solvent flows from the
gun.
7.
Relieve the pressure.

11307-620
Notes

27 8
46
25
26
21
5
34
16
35
32 31 33 14
11
19 2 12
36
24
3
22
20
18
10
7
23 13
0951A
37
12 307-620
Parts
Model 231–048, Series D
Caster cart sprayer—includes items 2 to 36
Ref
No. Part No. Description Qty.
2 107–142 VAL
VE, air , bleed-type; 1/2 npt (m x f) 1
3 104–267 AIR REGULATOR;
0 to 125 psi (0 to 0.9 MPa, 9 bar) range;
see manual 308–167 1
4 204–940
SWIVEL; see manual 306–861 1
5 102–170
ADAPTER, inlet; 3/4 npt(fbe) 1
6 223–540
HOSE, fluid; nylon; 1/4 in. I.D.;
cpld 1/4 npsm(fbe); 25 ft (7.6 m) long;
spring guards both ends 1
7 208–625 GUN, air blow 1
8 235–462 SPRAY GUN, airless;
see manual 308–236 1
10 151–519
NIPPLE, reducing; 1/4 x 1/8 npt 1
11 156–849
NIPPLE; 3/8 npt; 1.5 in. (38 mm) long 1
12 159–239
NIPPLE; 1/2 x 3/8 npt 1
13 214–960
HOSE, suction; 3/4 in. I.D.; nylon;
coupled 3/4 npt (mbe);
3.5 ft (1 m) long, w/spring guard 1
14 206–831 CHECK VAL
VE; see manual 306–861 1
15 206–994 THROAT SEAL LIQUID;
8 oz (0.23 liters); not shown 1
Ref
No. Part No. Description Qty.
16 218–029
FLUID FIL TER; see manual 307–273 1
18 162–376
MANIFOLD, air; 1/2 npt(m) x 1/2 npt(f)
swivel; three 1/8 npt(f) tapped holes 1
19 100–286 ELBOW
, street, 90  ; 3/8 npt (m x f) 1
20 100–403
PLUG, pipe, square hd; 1/8 npt 2
21 100–672 SETSCREW
, sq hd cup pt;
3/8 x 1 in. (25 mm) 2
22 100–721
PLUG, pipe, headless; 1/4 npt 1
23 165–767 SUCTION TUBE; 3/4 npt;
18 in. (457 mm) long 1
24 101–180 GAUGE, pressure, air;
0 to 200 psi (0 to 1.4 MPa, 14 bar) 1
25 101–851
CASTER; 2.5 in. (64 mm) dia. wheel 4
26 165–769 ST
AND, pump 1
27 SPRAY TIP (customer’s choice) 1
31 210–657 DRAIN VAL
VE; see manual 306–861 1
32 100–840 ELBOW
, street, 90  ; 1/4 npt (m x f) 1
33 100–040
PLUG, pipe; 3/8–18 npt 1
34 100–509
PLUG, pipe; 1/4–18 npt 1
35 162–453
NIPPLE; 1/4 npt x 1/4 npsm 1
36 223–596 23:1 MONARK PUMP
see manual 307–619 1
37 157–785
SWIVEL; union 1

106
REF
1 13
102
130
129
101
134
121
115
116
128
117
114
118
120
REF 1 13
113
111
130
110
111
109
108
107
136
142
139
05407A
13307-620
Parts
Model 226–968, Series A
Wall-mount sprayer—includes items 101 to 136
Ref
No. Part No.
Description Qty.
101 218–029
FLUID FIL TER; see manual 307–273 1
102 160–790
NIPPLE, pipe; 3/8 npt 1
106 223–596 23:1 MONARK PUMP;
see manual 307–619 1
107 101–353
NIPPLE; 1/2 npt 1
108 101–180 GAUGE, pressure, air;
0 to 200 psi (0 to 1.4 MPa, 14 bar) 1
109 104–267 AIR REGULATOR;
0 to 125 psi (0 to 0.9 MPa, 9 bar) range;
see manual 308–167 1
110 162–376
MANIFOLD, air;
1/2 npt(m) x 1/2 npt(f) swivel;
three 1/8 npt(f) tapped holes 1
111 100–403
PLUG, pipe, square hd; 1/8 npt 3
113 207–365 BRACKET
, wall mount;
see manual 306–783 1
114 100–349 ELBOW
, inlet, 90  ; 3/4 npt(fbe) 1
115 235–462 SPRAY GUN, airless;
see manual 308–236 1
116 SPRAY TIP (customer’s choice) 1
117 214–698
HOSE, fluid; nylon; 3/16 in. I.D.;
cpld 1/4 npsm(fbe); 25 ft (7.6 m) long;
spring guards both ends 1
118 165–767 SUCTION TUBE; 3/4 npt;
18 in. (457 mm) long 1
119 206–994 THROAT SEAL LIQUID;
8 oz (0.23 liters); not shown 1
120 214–961
HOSE, suction; 3/4 in. I.D.; nylon;
coupled 3/4 npt (mbe);
6 ft (1.8 m) long, w/spring guard 1
Ref
No. Part No.
Description Qty.
121 210–658 DRAIN VAL
VE; see manual 306–861 1
128 204–940
SWIVEL; see manual 306–861 1
129 162–453
NIPPLE; 1/4 npt x 1/4 npsm 1
130 100–509
PLUG, pipe; 1/4–18 npt 3
134 150–286
ADAPTER; 3/8 npt(f) x 3/8 npt(m) 1
136 113–269 VAL
VE, ball, vented; 1/2–14 npt (m x f) 1
139 237–569 GROUND WIRE and CLAMP 1
142 178–460
ADAPTER; 1/2 npt(f) x 3/8 npt(m) 1

228206
220
204
203
237
205
205 216
216
207
202
242
222
229
221
239
217
230
217
233
210
244
245
246
247
232
241
240
218
SEE
DETAIL
A
243
DET AIL A
0952
14 307-620
Parts
Model 224–626, Series A
Universal cart sprayer—includes items 202 to 243
Model 231–159
Universal cart sprayer with hose and gun—
includes items 202 to 247
Ref
No. Part No.
Description Qty.
202 100–016 LOCKW
ASHER, spring; 1/4 in. 2
203 100–022 CAPSCREW
, hex hd;
1/4–20 x 3/4 in. (19 mm) long 2
204 100–349 ELBOW
, inlet, 90  ; 3/4 npt(fbe) 1
205 100–403
PLUG, pipe, square hd; 1/8 npt 3
206 101–180 GAUGE, pressure, air;
0 to 200 psi (0 to 1.4 MPa, 14 bar) 1
207 224–044 CART
; see manual 308–136 1
210 210–659 DRAIN VAL
VE; see manual 306–861 1
216 100–509
PLUG, pipe; 1/4–18 npt 3
217 155–699 ELBOW
, street, 90  ; 3/8 npt (m x f) 2
218 159–239
NIPPLE, reducing; 1/2 x 3/8 npt 1
220 162–376
MANIFOLD, air;
1/2 npt(m) x 1/2 npt(f) swivel;
three 1/8 npt(f) tapped holes 1
221 165–767 SUCTION TUBE; 3/4 npt;
18 in. (457 mm) long 1
222 162–453
NIPPLE; 1/4 npt x 1/4 npsm 1
228 206–197 AIR REGULAT
OR; see manual
308–168 1
229 214–960
HOSE, suction; 3/4 in. I.D.; nylon;
coupled 3/4 npt (mbe);
3.5 ft (1 m) long, w/spring guard 1
230 206–831 CHECK VAL
VE; see 306–861 for parts 1
231 206–994 THROAT SEAL LIQUID;
8 oz (0.23 liters); not shown 1
Ref
No. Part No. Description Qty.
232 218–029
FLUID FIL TER; see manual 307–273 1
233 223–596 23:1 MONARK PUMP;
see manual 307–619 1
237 110–225
BALL V AL VE, bleed-type; 1/2 npt(fbe) 1
239 160–790
NIPPLE; 3/8–18 npt 1
240 155–470 UNION, swivel;
1/2 npt(m) x 1/2 npsm(f) 1
241 158–491
NIPPLE; 1/2 npt 1
242 100–015 NUT
, hex; 1/4–20 unc–2A 2
243 188–595 MOUNTING PLA
TE, pump 1
244 204–940
SWIVEL; see manual 306–861 1
245 223–540
HOSE, fluid; nylon; 1/4 in. I.D.;
cpld 1/4 npsm(fbe); 25 ft (7.6 m) long;
spring guards both ends 1
246 235–460 SPRAY GUN, airless
see manual 308–236 1
247 SPRAY TIP (customer’s choice) 1

15307-620
Technical Data
Category Data
Maximum W orking Pressure 2760 psi (19.3 MPa, 193 bar)
Maximum Incoming Air Pressure 120 psi (0.8 MPa, 8 bar)
Ratio 23:1
Sound Data*
Sound Pressure Level
Sound Power Level
85 dB(A)
96 dB(A)
Maximum Fluid T emperature** 180F (82 C)
W eight (Model 226–968) 62 lbs (28 kg)
W etted Parts†
Suction Hose and T ube
Fluid Hose
Fluid Fittings
nylon, aluminum
nylon, carbon steel fittings
zinc-plated carbon steel
* Sound levels were measured at 100 psi (0.7 MPa, 7 bar), air, at 60 cycles per minute per ISO 3744-1981.
** In most cases, the hose is the limiting factor in the temperature rating. For higher -temperature applications,
contact your local distributor for additional information.
† See the instruction manuals of the individual sprayer models for additional wetted parts information and other
technical data.
Manual Change Summary
This manual was revised to include the changes from ECO V4386, V3697, and PCN K.

16 307-620
Graco Standard W arranty
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
W ARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER W ARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED T O 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 T 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.
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
1998–1983 Graco Inc. 307–620 Rev . M March 1998 PRINTED IN U.S.A.