Air–operated piston transfer pump for low viscosity fluids. For professional use only.
Only models that are EX certified are approved for use in European explosive atmosphere
locations (see page 4).
1.2 MPa, 12.4 bar (180 psi) Maximum Air Input Pressure
1.2 MPa, 12.4 bar (180 psi) Maximum Fluid Working Pressure
For models that are certified, see page 4.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Refer to page 4 for a list of pump models.
307427ZAA
EN
This symbol on the nameplate means the
product is listed by ETL.
(UL Standard No. 79, Standard for Power-Operated
Pumps for Petroleum Product Dispensing Systems).
This symbol alerts you to the possibility of serious
injury or death 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.
INSTRUCTIONS
D This equipment is for professional use only.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
D Do 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.
D Use 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.
D Securely mount the pump. Do not attempt to operate it while holding it.
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 Wear hearing protection when operating this equipment.
D Do not lift pressurized equipment.
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
2307427
WARNING
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.
D Ground the equipment and the object being sprayed. Refer to Grounding the System on page 5.
D If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing/dispensing immediately. Do not use the equipment until you identify and correct the problem.
D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid be-
ing sprayed/dispensed.
D Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.
D Electrically disconnect all equipment in the spray/dispense area.
D Extinguish all open flames or pilot lights in the spray/dispense area.
D Do not smoke in the spray/dispense area.
D Do not turn on or off any light switch in the spray/dispense area while operating or if fumes are
present.
D Do not operate a gasoline engine in the spray/dispense area.
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.
D Know the specific hazards of the fluid you are using.
D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
D Any additives to the air supply, such as oil or anti–freeze will be exhausted into the atmosphere.
D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
D Keep clear of all moving parts when starting or operating the pump.
D Before servicing the equipment, follow the Pressure Relief Procedure on page 8 to prevent the
equipment from starting unexpectedly.
3074273
Pump Models
ETL LISTED PUMPS
The following pumps are ETL listed for light viscosity
paints, lacquers, varnishes, thinners, solvents when
installed in accordance with NFPA (National Fire
Protection Association) Standards No. 30, Flammable
and Combustible Liquids Code, and No. 33 Spray
Finishing Using Flammable Materials. The ETL listed
pumps have been evaluated using ASTM Reference
Fuels A, C, H, I, and IRM No. 3 Oil and that any fluid
used in these pumps should be reviewed against these
fluids to determine suitability. The carbon steel pumps
are for non-corrosive fluids, and the stainless steel
pumps are for corrosives.
Stubby Pumps
Model
No.
**226943
Series B
*226944
Series B
*226945
Series B
Displacement
Pump No.Description
215956
Series C
215957
Series C
215958
Series B
Carbon Steel,
Leather Packings
Carbon Steel,
Polyethylene
Packings
Stainless Steel,
Polyethylene
Packings
Parts
Pages
14, 18
14, 19
15, 28
NON-LISTED PUMPS
These pumps are for non-corrosive light viscosity fluids
such as anti-freeze, windshield washer solvent, ATF,
motor oil, and hydraulic oil.
Stubby Pumps
Model
No.
226948
Series B
226952
Series B
Bung-Mounted Drum Length Pumps
Model
No.
226947
Series B
226951{
Series B
226953
Series B
{ Model 226951 has a suction tube that can be extended 457 mm (18 in.). Non-extended pump length is
724 mm (28.5 in.). Fully extended pump length is 1180
mm (46.4 in.).
Displacement
Pump No.Description
218114
Series A
220439
Series A
Displacement
Pump No.Description
218113
Series A
218116
Series A
220440
Series A
Carbon Steel,
Rubber Packings
Stainless Steel,
Rubber Packings
Carbon Steel,
Rubber Packings
Carbon Steel,
Rubber Packings
Stainless Steel,
Rubber Packings
Parts
Pages
14, 24
15, 34
Parts
Pages
12, 24
16, 25
13, 33
Bung-Mounted Drum Length Pumps
Model
No.
**226940
Series B
**226941
Series B
**226942
Series B
686445
Series A}
} Model 686445 includes a spout, part no. 206265.
*This model is
**This model is
4307427
Displacement
Pump No.Description
215953
Series D
215954
Series D
215955
Series B
215954
Series D
II 2 G T6
Carbon Steel,
Leather Packings
Carbon Steel,
Polyethylene
Packings
Stainless Steel,
Polyethylene
Packings
Carbon Steel,
Polyethylene
Packings
certified.
II 1/2 G T6
ITS03ATEX11227
Parts
Pages
12, 18
12, 19
13, 27
12, 19
certified.
NON-LISTED PUMPS
These pumps are for general fluid transfer applications.
Stubby Pumps
Model
No.
*237130
Series A
*237131
Series A
*237132
Series A
Bung-Mounted Drum Length Pumps
Model
No.
**237133
Series A
**237134
Series A
**237129
Series A
Displacement
Pump No.Description
237254
Series A
237255
Series A
237256
Series A
Displacement
Pump No.Description
215953
Series D
237449
Series A
237253
Series A
Carbon Steel,
Leather Packings
Carbon Steel,
PTFE Packings
Stainless Steel,
PTFE Packings
Carbon Steel,
Leather Packings
Carbon Steel,
PTFE Packings
Stainless Steel,
PTFE Packings
Parts
Pages
14, 20
14, 22
15, 31
Parts
Pages
12, 18
12, 21
13, 30
Installation
General Information
D The Typical Installation shown in Fig. 2 is only a
guide for selecting and installing system components. Contact your Graco distributor for assistance
in planning a system to suit your needs.
D Always use Genuine Graco Parts and Accessories.
D Reference numbers and letters in parentheses refer
to the callouts in the figures and the parts lists on
pages 12–34.
D For ETL listed pumps. All pipe joints are to be
made tight with ETL listed gasoline–resistant pipe
compound.
Grounding the System
WARNING
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also read the section FIRE AND EXPLOSION HAZARD
on page 3.
To reduce the risk of static sparking, ground the pump
and all other equipment used or located in the pumping
area. Check your local electrical code for detailed
grounding instructions for your area and type of equipment. Ground all of this equipment.
1. ETL–Listed Pumps: Use a ground wire, connector,
and clamp. See Fig. 1. Loosen screw (X). Insert
one exposed end of a 12 ga (1.5 mm2) minimum
ground wire (Y) through the eye of the ground
terminal connector (W) and tighten screw (X)
securely. Connect the other end of the wire to a
true earth ground. Order Part No. 237569 Ground
Wire and Clamp.
2. Non ETL–Listed Pumps: See Fig. 1. Remove the
ground screw (Z). Fasten the ground connector
(W) onto the pump with the ground screw (Z) and
tighten securely. Loosen screw (X). Insert one
exposed end of a 12 ga (1.5 mm2) minimum
ground wire (Y) through the eye of the ground
terminal connector (W) and tighten screw (X)
securely. Connect the other end of the wire to a
true earth ground. Order Part No. 222011 Ground
Connector/Wire and Clamp.
W
Z
Y
X
Fig. 1
3. Air and fluid hoses: use only electrically conductive
hoses.
4. Air compressor: according to manufacturer’s
recommendations.
5. Dispensing valve: grounding is obtained through
connection to a properly grounded fluid hose and
pump.
6. Fluid supply container: according to local code.
7. Object being sprayed: according to local code.
8. All solvent pails used when flushing, according to
local code. Use only metal pails, which are conductive. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which interrupts the grounding continuity.
TI1052
3074275
Installation
E
DF
K
JL
Model 226951 only
DCC
EJ L
M
G
13 mm (0.5”)
H
C
A
B
C
KEY
A Vent Plug
B Bung Adapter
C Air Line Lubricator
D Bleed-type Master Air Valve
E Air Line Filter
F Grounded Air Hose
G Fluid Drain Valve
H Fluid Outlet
JPin Fitting
K Air Control Valve
(All Models except 226951)
L Air Line Coupler
M Grounded Fluid Hose
CC Air Regulator Kit
(Model 226951 only)
Fig. 2
Mounting the Pump
Always rigidly mount the pump to suit the type of installation planned. Graco mounting accessories are
shown in the Accessories section. With 200 liter (55
gallon) drum length pumps, screw the bung adapter
(B) tightly into the bung hole of the drum and adjust to
hold the pump 13 mm (0.5 in.) off the bottom of the
drum. Loosen the vent plug (A) to prevent formation of
a vacuum in the drum. Stubby pumps may be mounted
on a wall or on the side of a drum with a clamp. Drum
pumps can also be mounted to the side of a drum.
03762
NOTE: Refer to Dimensions on page 37 for pump
dimensions, and air inlet and fluid outlet sizes.
6307427
Installation
System Accessories
Refer to Fig. 2 and the Accessories section.
NOTE: To ensure maximum pump performance, be
sure that all accessories used are properly sized to
meet your system’s requirements.
Most models are supplied with a needle-type air control valve (K) at the pump air inlet. Model 226951 is
equipped with an air regulator kit (CC) instead (see
Fig. 3). All models are supplied with an air line quick
disconnect coupler (L) to connect the air line to the
pump and accessories.
WARNING
A bleed-type master air valve (D) and a fluid drain
valve (G) are required in your system, to help reduce the risk of serious injury, including splashing
fluid in the eyes or on the skin, and injury from
moving parts if you are adjusting or repairing the
pump.
Model 226951 Only
Using moderate force, extend the pump suction tube,
insert the pump into the drum or tank bung hole, and
screw the bung adapter (B) tightly into the bung hole.
Lift the pump about 13 mm (0.5 in.) and tighten the
bung adapter (B) screw to hold the pump. Loosen the
vent plug (A). Refer to Fig. 2.
CAUTION
To prevent damaging the o-ring seals inside the suction tube, do not use excessive force when extending
the suction tube.
All Other Models
Refer to Fig. 2 and to the mounting accessories shown
on page 35 for pump mounting methods.
Model
226951
Shown
The bleed-type master air valve (D) relieves air
trapped between this valve and the pump after the
pump is shut off. Trapped air can cause the pump
to cycle unexpectedly and result in serious injury,
including amputation. Locate the valve close to the
pump.
The fluid drain valve (G) helps relieve pressure in
the displacement pump, hose, and dispensing
valve when shutting off the pump. Actuating the
dispensing valve to relieve pressure may not be
sufficient, especially if there is a clog in the hose or
the dispensing valve.
For automatic air motor lubrication, install an air line
lubricator (C) downstream from the air regulator (if
supplied) and all other accessories. Install a bleed-type
master air valve (D) close to the pump. Next, install the
air regulator (CC), if supplied. Install an air line filter (E)
upstream from all other accessories, to remove harmful dirt and moisture from the compressed air supply.
Using a suitable adapter, install the male disconnect
pin fitting (J) in the air filter inlet. Install the air line
quick disconnect coupler (L) on the air hose (F), but do
not connect it to the pin fitting yet.
CC
JL
B
Connect an electrically conductive fluid hose (M) to the
3/4 npt(f) fluid outlet.
03763
Fig. 3
3074277
Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying accidentally. To reduce the risk of an injury from accidental spray from the gun, splashing fluid, or
moving parts, follow the Pressure Relief Proce-dure whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray nozzle.
1. Shut off the air to the pump.
2. Close the bleed-type master air valve (required in
your system).
3. Hold a metal part of the dispensing valve firmly to
the side of a grounded metal pail, and trigger the
valve to relieve pressure.
4. Open the fluid drain valve (required in your system) to relieve all fluid pressure, having a container ready to catch the drainage.
5. Leave the drain valve open until you are ready to
dispense again.
Cycle the pump slowly for at least 5 minutes, then stop
and disconnect the air hose. Push up on the ball of the
intake valve (N) to drain the lower part of the pump.
See Fig. 4. Turn the pump over to drain the upper part
of the pump.
N
03765
Fig. 4
Starting and Adjusting the Pump
With the air valve (K) or regulator (CC) closed, turn on
the air supply and connect the air line coupler (L). See
Figs. 3 or 5. Make sure all dispensing valves are open.
Slowly open the air valve (K) or regulator (CC) until the
pump cycles 5 to 20 cycles per minute. The pump itself only takes a few strokes to prime. In a large system, however, the pump may have to be cycled for
several minutes to fill all the lines. Once the entire system is primed, use the air valve or regulator to control
pump speed and cycle rate; always use the lowest
pressure necessary to get the desired results.
If you suspect that the nozzle or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
hose end coupling and relieve pressure gradually, then
loosen completely. Now clear the nozzle or hose.
Flush the Pump Before Using
The pump was tested in lightweight oil, which was left
in to protect pump parts. To prevent contamination of
the fluid you are pumping, flush the pump with a compatible solvent before using it.
To flush the pump, connect a short hose to the pump
outlet, insert the pump intake into a pail of compatible
solvent, direct the hose into a pail, and start the pump
as explained at right.
When used for transfer and supply operations with no
dispensing valve, the pump will run whenever air is
supplied.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
1. Disconnect the air line coupler (L).
2. Relieve the pressure.
8307427
Maintenance
Fill the wet-cup (P) 1/2 full of Graco Throat Seal Liquid
(TSL) or compatible solvent and keep it 1/2 full to keep
fluid from drying on the displacement rod and damaging pump throat packings. See Fig. 5.
WARNING
Do not attempt to adjust the packing nut with the
pump operating.
Lubricate the throat packings frequently when you are
pumping a non-lubricating fluid, or are shutting down
for more than a few days. Some pumps have a grease
fitting (DD) for this purpose. See Fig. 5.
The accessory air line lubricator (C) provides automatic air motor lubrication. To manually lubricate the motor, disconnect the air line at the air motor inlet, put
about 15 drops of lightweight oil in the inlet, reconnect
the air line and turn on the air to blow oil into the motor.
Never allow the pump to run dry of 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, prime the
pump and lines with fluid, or flush and leave filled with
compatible solvent. Be sure to eliminate all air from the
fluid system.
Periodically, check the tightness of the packing nut (P).
Relieve the pressure, then tighten enough to prevent
leakage; no tighter. See Fig. 5. If the leakage can not
be stopped, change the packings to prevent exposure
to the fluid being pumped.
L
J
K
P
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Fig. 5
H
DD
03764B
3074279
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.
1. Relieve the pressure.
2. Check all other possible remedies before disassembling the pump.
PROBLEM
The pump fails to operate.Dirty or worn air motor.Clean, service; see the separate motor
The pump operates, but the output
is low on both strokes.
The pump operates, but the output
is low on the downstroke.
The pump operates, but the output
is low on the upstroke.
Erratic or accelerated operation.Exhausted fluid supply.Refill the fluid supply and reprime the
CAUSESOLUTION
manual 307456.
Inadequate air supply or restricted
lines.
Closed or clogged air valves.Open or clear the valves.
Clogged fluid hose or valve.Clear the hose or valves.
Worn or damaged valves or seals.Service the valves or seals.
Clogged fluid hose or valve.Clear the hose or valves.
Exhausted fluid supply.Refill the fluid supply and reprime the
Worn or damaged valves or seals.Service the valves or seals.
Held open or worn intake valve.Clear or service the valve.
Worn or damaged valves or seals.Service the valves or seals.
Held open or worn piston valve.Clear or service the valve.
Worn or damaged valves or seals.Service the valves or seals.
Clean lines or increase the air supply
(see Technical Data).
pump.
pump.
Broken air motor compression spring. Replace the spring.
10307427
Pump Service
Disconnecting the Air Motor
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. Flush the pump.
2. Relieve the pressure. Remove the pump from its
mounting.
115
103
3
3. See Fig. 6. Unscrew the tie rod locknuts (103).
4. Unscrew and remove the screw (105) and barrel
(104).
5. Raise the air motor (115) away from the displacement pump (114). Unscrew the displacement rod
(15) from the air motor connecting rod (S).
6. To order pump parts, refer to the parts lists on
pages 12–16. Refer to pages 17–34 for displacement pump service and parts information. Refer to
manual 307456 for air motor service and parts information.
Reconnecting the Air Motor
1. When reconnecting the air motor, use lithium base
grease on the threads of the displacement rod
(15). Make sure the o-ring (14) is in place on the
rod.
2. Insert the muffler (T) into the air motor connecting
rod (S) as shown in Fig. 6.
105
106
2
14
15
114
S
104
T
1
3. Tighten the displacement rod (15) into the air motor connecting rod hand tight, and install the barrel
and screw set (104 and 105).
4. Apply thread sealant to the threads of the tie rods
(106). To ensure proper alignment, first thread the
tie rod locknuts (106) loosely onto the tie rods,
then torque evenly to 15 NSm (8 ft–lb).
NOTE: Removing the muffler (T) will increase both
pump flow rate and exhaust noise.
5. Reconnect the groundwire if it was disconnected
during service.
Fig. 6
Grease the threads.
1
Apply thread sealant.
2
Torque evenly to
3
15 NSm (8 ft–lb).
03766B
30742711
Bung Mount Drum-Length Pumps,
Carbon Steel Models
Pump Parts
Model 226940, Series B, leather packed
Model 226941, Series B, polyethylene packed
Model 226947, Series B, rubber packed
Model 237133, Series A, leather packed
Model 237134, Series A, PTFE packed
Model 686445, Series A, polyethylene packed, with
spout
Ref.
No.Part No.DescriptionQty.
103104541NUT, lock; M8; w/nylon insert3
104n 15B249PIN, barrel1
105n 15B250SCREW1
106177171TIE ROD3
107190165FITTING, air line; for Models
237133 and 237134 only1
169969FITTING, air line
for all other models1
108206264NEEDLE VALVE ASSY
Includes items 109–112, 116, 117 1
109n 157628. PACKING, o-ring; nitrile rubber1
110165722. BODY1
111166531. RING, friction washer1
112166529. NEEDLE1
113190164COUPLER, air line; for Models
237133 and 237134 only1
114558COUPLER, air line
for all other models1
114215953DISPLACEMENT PUMP, for
Models 226940 and 237133;
see page 181
215954DISPLACEMENT PUMP
for Model 226941; see page 191
237449DISPLACEMENT PUMP
for Model 237134; see page 211
218113DISPLACEMENT PUMP
for Model 226947; see page 241
115223099AIR MOTOR KIT
See instruction manual 3074561
116166532NUT, packing1
117164698KNOB, adjusting1
118206265SPOUT; Model 686445 only
(not shown)1
Model 226940 Shown
115
103
105
106
104
114
113
107
108 (Includes items
109–112, 116, 117;
see detail below.)
110
112
116
111
109
117
ti12378A
n Keep these spare parts on hand to reduce down
time.
12307427
Bung Mount Drum-Length Pumps,
Stainless Steel Models
Pump Parts
Model 226942, Series B, polyethylene packed
Model 226953, Series B, rubber packed
Model 237129, Series A, PTFE packed
Ref.
No.Part No.DescriptionQty.
102215961MOUNTING KIT
for Stainless Steel Pumps;
includes items 103, 113, 116,1171
103104541. NUT, lock; M8; w/nylon insert3
104n 15B249. PIN, barrel1
105n 15B250. SCREW1
106177170. TIE ROD3
107190165. FITTING, air line
108 (Includes items
109–112, 116, 117;
see detail below.)
110
112
116
111
109
117
n Keep these spare parts on hand to reduce down
time.
03772B
30742713
Stubby Length Pumps,
Carbon Steel Models
Pump Parts
Model 226943, Series B, leather packed
Model 226944, Series B, polyethylene packed
Model 226948, Series B, rubber packed
Model 237130, Series A, leather packed
Model 237131, Series A, PTFE packed
Bung Mount Adjustable Length Pump, Carbon Steel Model
Fits bung type containers from 724 mm (28.5 in.) to 1180 mm (46.4 in.) deep
(maximum 456 mm [18 in.] adjustment).
Model 226951, Series B, rubber packed
Ref.
No.Part No.DescriptionQty.
103104541NUT, lock; M8; w/nylon insert3
104n 15B249PIN, barrel1
105n 15B250SCREW1
106177171TIE ROD3
107169969FITTING, air line1
113114558COUPLER, air line1
114218116DISPLACEMENT PUMP
for Model 226951; see page 251
115223099AIR MOTOR KIT
See instruction manual 3074561
118218316AIR REGULATOR KIT
Includes items 107, 113,
119–1231
119100403PLUG, pipe; 1/8 npt1
120104655GAUGE, air pressure; 0–60 psi
(0–0.4 MPa, 0–4.2 bar);
1/8 npt inlet1
121104815REGULATOR, air; 0–60 psi
(0–0.4 MPa, 0–4.2 bar);
see 3081671
122103656NIPPLE, pipe; 1/8 npt1
123100030BUSHING, pipe;
1/4 npt(m) x 1/8 npt(f)1
115
118 (Includes items
107, 113, 119–123;
see detail below.)
103
105
106
123
104
122
119
114
120
121
107
113
03784
n Keep these spare parts on hand to reduce down
time.
03783B
16307427
Displacement Pump Service
CARBON STEEL DISPLACEMENT PUMPS,
with leather, polyethylene, or
PTFE packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
D Model 215953, page 18.
D Model 215956, page 18.
D Model 215954, page 19.
D Model 215957, page 19.
D Model 237254, page 20.
D Model 237449, page 21.
D Model 237255, page 22.
Before You Start
1. Disconnect the displacement pump from the air
motor as explained on page 11.
2. Be sure you have all the necessary repair parts on
hand to reduce downtime.
3. Repair Kits are available. For best results, use all
the new parts in the kit even if the old parts look
good. Refer to the parts drawing for your pump.
Intake Valve
1. Unscrew the intake valve housing (23) from the
cylinder (13), using a strap wrench. Disassemble
the valve and clean and inspect all parts.
NOTE: On Models 237254 and 237255, inspect the
ball (28) and seat in the housing (23) for wear or nicks.
3. Clean and inspect all piston parts. Replace parts
as necessary. Reassemble the piston parts as
shown, being sure thatthe lips of the u-cup pack-ing (21) are facing up. Screw the piston stud (22)
into the valve housing (18) and torque to 31 NSm
(23 ft–lb).
4. When reassembling the piston to the connecting
rod (17), screw the connecting rod all the way into
the displacement rod (15). Tighten the upper nut
(16) against the displacement rod and torque to 33
NSm (24 ft–lb). Adjust the lower nut (16) to allow
3.1 mm (0.125 in.) free travel for the disk (19).
Throat Packings
1. Remove the cylinder (13) and piston as explained
previously. Remove the packing nut (1) and pull
the displacement rod (15) out of the top of the outlet housing (6). Inspect the outer surface of the
displacement rod for scoring or wear by running a
finger over the surface or holding it up to the light
at an angle.
2. Remove the throat packings from the outlet housing (6).
3. Clean and inspect the parts for wear or damage.
Lubricate the packings before reassembly. Install
the parts one at a time, in the same position as
before. The lips of the v-packings must face down
against fluid pressure.
NOTE: On displacement pumps 215953, 215956, and
237254, install the two leather v-packings (4) below the
single PTFE v-packing (3).
2. Replace parts as necessary. Reassemble as
shown in the applicable parts drawing.
Piston Valve
1. Using a strap wrench, grip the cylinder (13) near
the outlet housing (6) and unscrew it from the
housing. Pull the cylinder down off the piston.
Check the inner surface of the cylinder for scoring
or wear by running a finger over the surface or
holding the part up to the light at an angle.
2. Loosen the lower nut (16) and unscrew the valve
housing (18) from the connecting rod (17). Unscrew the piston stud (22).
4. Leave the packing nut (1) loose until the displacement rod (15) has been installed.
CAUTION
Insert the displacement rod from the top of the outlet
housing to prevent shearing of the packings.
5. Tighten the packing nut just enough to prevent
leaking. Overtightening can damage the packings.
6. Reconnect the displacement pump to the air motor
as explained on page 11.
CARBON STEEL DISPLACEMENT PUMPS,
with rubber packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
D Model 218113, page 24.
D Model 218114, page 24.
D Model 218116, page 25.
Before You Start
1. Disconnect the displacement pump from the air
motor as explained on page 11.
2. Be sure you have all the necessary repair parts on
hand to reduce downtime.
3. Repair Kit 218112 is available. For best results,
use all the new parts in the kit even if the old parts
look good.
Intake Valve
3. Clean and inspect all piston parts. Replace parts
as necessary. Reassemble the piston parts as
shown, being sure thatthe lips of the u-cup pack-ing (21) are facing up. Screw the piston stud (22)
into the valve housing (18) and torque to 31 NSm
(24 ft–lb).
4. When reassembling the piston to the connecting
rod (17), screw the connecting rod all the way into
the displacement rod (15). Tighten the upper nut
(16) against the displacement rod and torque to 33
NSm (24 ft–lb). Adjust the lower nut (16) to allow
3.1 mm (0.125 in.) free travel for the disk (19).
Throat Packings
1. Remove the cylinder (13) and piston as explained
previously. Remove the packing nut (1) and pull
the displacement rod (15) out of the top of the outlet housing (6). Inspect the outer surface of the
displacement rod for scoring or wear by running a
finger over the surface or holding it up to the light
at an angle.
2. Remove the throat packings from the outlet housing (6).
1. Unscrew the intake valve housing (23) from the
cylinder (13), using a strap wrench. Disassemble
the valve and clean and inspect all parts.
2. Replace parts as necessary. Reassemble as
shown in the applicable parts drawing.
Piston Valve
1. Using a strap wrench, grip the cylinder (13) near
the outlet housing (6) and unscrew it from the
housing. Pull the cylinder down off the piston.
Check the inner surface of the cylinder for scoring
or wear by running a finger over the surface or
holding the part up to the light at an angle.
2. Loosen the lower nut (16) and unscrew the valve
housing (18) from the connecting rod (17). Unscrew the piston stud (22).
3. Clean and inspect the parts for wear or damage.
Lubricate the packings before reassembly. Install
the parts one at a time, in the same position as
before. The lips of the u-cup must face down
against fluid pressure.
4. Leave the packing nut (1) loose until the displacement rod (15) has been installed.
CAUTION
Insert the displacement rod from the top of the outlet
housing to prevent shearing of the packings.
5. Tighten the packing nut just enough to prevent
leaking. Overtightening can damage the packings.
6. Reconnect the displacement pump to the air motor
as explained on page 11.
STAINLESS STEEL DISPLACEMENT
PUMPS, with polyethylene, leather,
or PTFE packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
D Model 215955, page 27.
D Model 215958, page 28.
D Model 237253, page 30.
D Model 237256, page 31.
Before You Start
1. Disconnect the displacement pump from the air
motor as explained on page 11.
2. Be sure you have all the necessary repair parts on
hand to reduce downtime.
3. Repair Kits are available. For best results, use all
the new parts in the kit even if the old parts look
good. Refer to the parts drawing for your pump.
Intake Valve
1. Unscrew the intake valve housing (23) from the
cylinder (13), using a strap wrench. Disassemble
the valve and clean and inspect all parts.
3. Clean and inspect all piston parts. Be sure to inspect the ball (25) and its seat on the piston stud
(22) for wear or nicks. Replace parts as necessary.
Reassemble the piston parts as shown, being sure
that the lips of the u-cup packing (21) are facing
up. Torque as specified on the applicable illustra-
tion. Using a strap wrench, grip the cylinder (13)
near the outlet housing (6) and screw it into the
housing.
NOTE: On Models 215955 and 237253, when reas-
sembling the piston to the connecting rod (17), screw
the connecting rod all the way into the displacement
rod (15). Tighten the upper nut (16) against the displacement rod and torque to 33 NSm (24 ft–lb). Adjust
the lower nut (16) to allow 3.1 mm (0.125 in.) free travel for the ball (25).
Also, when installing the cylinder (13), make sure that
the knurled end is at the bottom.
Throat Packings
1. Remove the cylinder (13) and piston as explained
previously. Remove the packing nut (1) and pull
the displacement rod (15) out of the top of the outlet housing (6). Inspect the outer surface of the
displacement rod for scoring or wear by running a
finger over the surface or holding it up to the light
at an angle.
2. Inspect the ball (28) and seat in the housing (23)
for wear or nicks.
3. Replace parts as necessary. Reassemble as
shown in the applicable parts drawing.
Piston Valve
1. Using a strap wrench, grip the cylinder (13) near
the outlet housing (6) and unscrew it from the
housing. Pull the cylinder down off the piston.
Check the inner surface of the cylinder for scoring
or wear by running a finger over the surface or
holding the part up to the light at an angle.
2. On Models 215955 and 237253, loosen the lower
nut (16) and unscrew the valve housing (18) from
the connecting rod (17). Unscrew the piston stud
(22).
On Models 215958 and 237256, remove the cotter
pins (29) from the ball stop pin (30). Remove the
ball stop pin and unscrew the piston stud (22) from
the displacement rod (15). Be careful not to drop
the ball (25).
2. Remove the throat packings from the outlet housing (6).
3. Clean and inspect the parts for wear or damage.
Lubricate the packings before reassembly. Install
the parts one at a time, in the same position as
before. The lips of the v-packings must face down
against fluid pressure.
4. Leave the packing nut (1) loose until the displacement rod (15) has been installed.
CAUTION
Insert the displacement rod from the top of the outlet
housing to prevent shearing of the packings.
5. Tighten the packing nut just enough to prevent
leaking. Overtightening can damage the packings.
6. Reconnect the displacement pump to the air motor
as explained on page 11.
STAINLESS STEEL DISPLACEMENT
PUMPS, with rubber packings
This procedure covers the following displacement
pumps. Refer to the parts drawings on the indicated
pages for an illustration of your pump.
D Model 220440, page 33.
D Model 220439, page 34.
Before You Start
1. Disconnect the displacement pump from the air
motor as explained on page 11.
2. Be sure you have all the necessary repair parts on
hand to reduce downtime.
3. Repair Kit 218112 is available. For best results,
use all the new parts in the kit even if the old parts
look good.
Intake Valve
1. Unscrew the intake valve housing (23) from the
cylinder (13), using a strap wrench. Disassemble
the valve and clean and inspect all parts.
2. Inspect the ball (28) and seat in the housing (23)
for wear or nicks.
3. Replace parts as necessary. Reassemble as
shown in the applicable parts drawing.
Piston Valve
1. Using a strap wrench, grip the cylinder (13) near
the outlet housing (6) and unscrew it from the
housing. Pull the cylinder down off the piston.
Check the inner surface of the cylinder for scoring
or wear by running a finger over the surface or
holding the part up to the light at an angle.
2. On Model 220440, loosen the lower nut (16) and
unscrew the valve housing (18) from the connecting rod (17). Unscrew the piston stud (22).
3. Clean and inspect all piston parts. Be sure to inspect the ball (25) and its seat on the piston stud
(22) for wear or nicks. Replace parts as necessary.
Reassemble the piston parts as shown, being sure
that the lips of the u-cup packing (21) are facing
up. Torque as specified on the applicable illustra-
tion. Using a strap wrench, grip the cylinder (13)
near the outlet housing (6) and screw it into the
housing.
NOTE: On Model 220440, when reassembling the pis-
ton to the connecting rod (17), screw the connecting
rod all the way into the displacement rod (15). Tighten
the upper nut (16) against the displacement rod and
torque to 33 NSm (24 ft–lb). Adjust the lower nut (16) to
allow 3.1 mm (0.125 in.) free travel for the ball (25).
Also, when installing the cylinder (13), make sure that
the knurled end is at the bottom.
Throat Packings
1. Remove the cylinder (13) and piston as explained
previously. Remove the packing nut (1) and pull
the displacement rod (15) out of the top of the outlet housing (6). Inspect the outer surface of the
displacement rod for scoring or wear by running a
finger over the surface or holding it up to the light
at an angle.
2. Remove the throat packings from the outlet housing (6).
3. Clean and inspect the parts for wear or damage.
Lubricate the packings before reassembly. Install
the parts one at a time, in the same position as
before. The lips of the u-cup must face down
against fluid pressure.
4. Leave the packing nut (1) loose until the displacement rod (15) has been installed.
CAUTION
Insert the displacement rod from the top of the outlet
housing to prevent shearing of the packings.
On Model 220439, remove the cotter pins (29)
from the ball stop pin (30). Remove the ball stop
pin and unscrew the piston stud (22) from the displacement rod (15). Be careful not to drop the ball
(25).
32307427
5. Tighten the packing nut just enough to prevent
leaking. Overtightening can damage the packings.
6. Reconnect the displacement pump to the air motor
as explained on page 11.
2.1 MPa, 21 bar (300 psi) Maximum Working Pressure
Relieves air trapped in the air line between the pump
air inlet and this valve when closed.
218316 Air Regulator Kit
Includes 1/8” size, 0–0.4 MPa, 0–4.2 bar (0–60 psi) air
regulator and air pressure gauge, and air quick coupler. See page 16.
206994 Throat Seal Liquid (TSL)
Solvent for wet-cup. 0.24 liter (8 oz.).
204574 Drum Cover
40 liter (10 gallon) size and 60 liter (16 gallon) size.
Drum cover mounts on top of an open drum, with
mounting holes for 1:1 metric pump. Includes thumbscrews and a rubber gasket.
200326 Drum Cover
200 liter (55 gallon) size. Drum cover mounts on top of
an open drum, with mounting for 1:1 metric pump.
101078 Y Line Strainer
3.5 MPa, 35 bar (500 psi) Maximum Working Pressure
3/4 npt(f) ports; no. 20 mesh screen.
107141 3/4 npt(m x f) inlet and outlet.
107142 1/2 npt(m x f) inlet and outlet.
106149 Air LIne Filter
1.8 MPa, 18 bar (250 psi) Maximum Working Pressure
1/2 npt(f) inlet and outlet.
214848 Air LIne Lubricator
1.8 MPa, 18 bar (250 psi) Maximum Working Pressure
1/2 npt(f) inlet and outlet.
206265 Spout
For directing fluid into pails.
Carbon steel; 3/4 npt inlet.
215965 Intake Extension Tube
Intake tube 265 mm (10.4 in.) long; screws into bottom
1–1/2 npt(f) thread of 1:1 metric pump.
Carbon steel. See manual 307459.
36307427
214951 Hose and 238651 Valve
1.2 MPa, 12 bar (175 psi) Maximum Working Pressure
7.6 m (25 ft) long, 1/2 npt(m) x 3/4 npt(m), electrically
conductive.
Wetted partsModels 226940, 226943, 237130, and 237133:
Carbon Steel, 303, 304 and 316 Stainless Steel, Leather,
Cadmium-Plated Ductile Iron, Chrome and Zinc-Plated Steel, PTFE,
fluoroelastomer
Models 226941, 226944, and 686445: Carbon Steel, 303, 304 and
316 Stainless Steel, Cadmium-Plated Ductile Iron, Chrome and
Zinc-Plated Steel, PTFE, fluoroelastomer, Polyethylene
Model 237131 and 237134: Carbon Steel, 303, 304 and 316
Stainless Steel, Cadmium-Plated Ductile Iron, Chrome and
Zinc-Plated Steel, PTFE, fluoroelastomer
Models 226942 and 226945: 303, 304 and 316 Stainless Steel,
Chrome, PTFE, fluoroelastomer, Polyethylene
Models 237129 and 237132: 303, 304 and 316 Stainless Steel,
Chrome, PTFE, fluoroelastomer, Polyethylene
Models 226947, 226948, and 226951: 303, 304 and 316 Stainless
Steel, Buna-N, Cadmium-Plated Ductile Iron, Chrome and
Zinc-Plated Steel, PTFE, fluoroelastomer, Polyethylene
Models 226952 and 226953: 303, 304 and 316 Stainless Steel,
Chrome, PTFE, Rubber
38307427
Notes
30742739
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 to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco,
Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be
defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,
installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and
transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection
with accessories, equipment, materials or components sold but not manufactured by Graco. These items sold, but not manufactured
by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide
purchaser with reasonable assistance in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,
breach of warranty, the negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires
exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.
Graco Information
For the latest information about Graco products, visit www.graco.com.
TO PLACE AN ORDER, contact your Graco distributor or call to identify the distributor closest to you:
Phone: 612–623–6921 or Toll Free: 1–800–328–0211 Fax: 612–378–3505
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.
40307427
Original instructions. This manual contains English. MM 307427
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES S P.O. BOX 1441 S MINNEAPOLIS MN 55440–1441 S USA
Copyright 1980, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revised 09/2011
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