Graco DynaMite 224906 Operation manual

Instructions – Parts List
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Copyright 1993, Graco Inc. is registered to I.S. EN ISO 9001
AIR OPERATED, WATERBASE COMPATIBLE
DynaMitetDispense Valves
Maximum Fluid Viscosity: 600,000 Centipose
900 psi (63 bar) Maximum Fluid Working Pressure
100 psi (7 bar) Maximum Air Input Pressure
Model 224906, Series A
Dispense Valve
Model 235877
Dispense Valve with Handle
Patent Pending
Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 3, 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 7, 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts
Model 224906 10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 235877 11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 14. . . . . . . . . . . . . . . . . . . . . . . . . .
308266C
Model 224906
01795
01796
Model 235877
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.

2308266
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
SKIN INJECTION HAZARD
High–pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like
just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
DDo not point dispense valve at anyone or at any part of the body.
DDo not put your hand over the end of the dispense nozzle.
DDo not stop or deflect leaks with your hand, body, glove, or rag.
DFollow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
DDo not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
DUse fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not alter or modify equipment.
DFor professional use only.
DUse equipment only for its intended purpose. Call your Graco distributor for information.
DRoute hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
DDo not use hoses to pull equipment.
DComply with all applicable safety regulations.

3308266
Installation
NOTE: Read and understand this entire manual before
operating the Dispense Valve.
NOTE: The dispense valve requires a minimum air
inlet pressure of 40 psi (2.8 bar).
Mounting Accessories
Mounting Stand Kit
Mounting Stand 235270 is available for applications
requiring mounting the valve in a fixed position. The kit
includes instructions. See Accessories on page 12.
Foot Valve Kit
Foot Valve 235830 enables the operator to trigger the
dispense valve with a foot pedal. The kit includes
instructions. See Accessories on page 12.
Handle Kit
Handle Kit 235269 is available to convert Model
224906 Dispense Valve to Model 235877. The kit in-
cludes instructions. See Accessories on page 12.
Installing the Needle Nozzle
NOTE: This dispense valve is supplied with two needle
nozzle sizes (.047 in. and .063 in. I.D.). Other sizes
are available (see page 12).
To install needle nozzles 112000 through 112007,
wrap the threads of the needle nozzle with PTFE tape
and screw the needle nozzle (14) securely into the
housing (12). See Fig. 1.
NOTE: When removing a needle nozzle, hold the
needle nozzle housing (12) with a wrench to keep it
from moving. Using another wrench, remove the
needle nozzle (14) from the housing.
NOTE: Other needle nozzle sizes are available (see
Accessories on page 12). To use these needle
nozzles, you must also purchase Needle Adapter
109599. To install these needle nozzles, wrap the
threads of the 109599 needle adapter with PTFE tape
and screw the adapter securely into the needle nozzle
housing (12). Push the needle nozzle into the adapter
and turn clockwise to lock.
Fig. 1
12
14
KEY
12 Needle Nozzle Housing
14 Needle Nozzle
01796
Model 235877 Shown

4308266
Installation
Connecting the Air and Fluid Lines
NOTE: To change the relative positions of the fluid in-
let (C) and air fitting (10 or 106), loosen the valve
housing swivel (11), reposition the fluid inlet, and re-
tighten.
1. Connect the air supply tube (A) to the air inlet fit-
ting (10 or 106) by pushing the tube straight into
the fitting until it seats. To check that the tube is
secure, pull back on it gently, to ensure that it will
not pull out. See Fig. 2.
NOTE: If cutting the tube, cut it at 90_, being careful
not to damage the outer diameter of the tube. Use of a
tube cutter is recommended. The fitting will leak if the
tubing is not cut at 90_.
2. Connect the fluid line (B) to the 1/8 npt(f) fluid inlet
(C) of the dispense valve. For convenience, use
hose ties (E) to fasten the fluid line and air line to-
gether.
NOTE: Fluid Hose Kits are available. See Accesso-
ries on page 12. The kits include a length of hose (B)
and a fluid inlet swivel (D).
Fig. 2
02169
KEY
10 Air Inlet Fitting (Model 224906)
11 Valve Housing (Swivel)
106 Air Inlet Fitting (Model 235877)
A Air Supply Line (not supplied)
B Fluid Supply Line (not supplied)
C Fluid Inlet
D Fluid Inlet Swivel (not supplied)
E Hose Tie (not supplied)
01797
10
106
A
B
C
E
Model 235877
(shown with air line and
optional fluid hose kit installed)
D
A
BE
11
C
11
D
Model 224906
(shown with air line and
optional fluid hose kit installed)

5308266
Operation
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
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, follow 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. Shut off the air and fluid supply to the dispense
valve.
2. Point the valve into a pail, and trigger the valve to
relieve pressure.
3. If you suspect that the needle nozzle or hose is
completely clogged or that pressure has not been
fully relieved after following the steps above, very
slowly loosen the needle nozzle or hose end cou-
pling and relieve pressure gradually, then loosen
completely. Now clean the needle nozzle or hose.

6308266
Operation
WARNING
To reduce the risk of overpressurization which can
cause component rupture and serious injury, never
exceed 900 psi (63 bar) fluid pressure or 100 psi
(7 bar) air pressure to the dispense valve.
Starting and Adjusting the Flow
1. Open the air (A) and fluid (B) supply lines to the
dispense valve.
2. Trigger the dispense valve until fluid begins to flow
evenly from the needle nozzle (14) and all air is
expelled from the system. Close the valve to stop
the flow. The valve and fluid line are now primed.
See Fig. 3.
NOTE: When using a foot valve kit (see page 12),
press the foot pedal to trigger the dispense valve, and
release the pedal to stop the flow. On Model 235877
Dispense Valve, press the trigger (G) to open the
valve, and release to stop the flow.
3. To adjust the flow and bead size, make the follow-
ing adjustments in the order given:
a. Adjust the fluid inlet pressure to the valve to
get the desired results.
b. To change the bead width or shot size, or to
adjust for heavier or lighter viscosity fluids,
change to a different size needle nozzle (see
page 12 for available sizes).
c. For finer adjustments, turn the adjustment
knob (6) to the right. To maintain the desired
setting, tighten the lock nut (8).
NOTE: Time-pressure Controller 692018 is available
for precision dispensing of very small quantities of
fluid. See page 12 to order.
Shutdown
1. Always follow the Pressure Relief Procedure on
page 5 whenever you stop dispensing, even for
only a short time.
2. When the dispense valve is not in use, remove the
needle nozzle (14) or place a cork over the tip (see
Fig. 3).
3. Never soak the entire dispense valve in solvent.
Disconnect the fluid section from the air section by
unscrewing the valve housing (11). Soak only the
fluid section (F).
Fig. 3
02273
8
14
KEY
6 Adjustment Knob
8 Lock Nut
11 Valve Housing
14 Needle Nozzle
A Air Line
B Fluid Line
F Fluid Section
G Trigger
A
B
F
Model 235877 Shown
G
11
1When valve is not in use, disconnect
needle nozzle (14) or place a cork over the tip.
1
6

7308266
Service
WARNING
SKIN INJECTION HAZARD
To reduce the risk of serious injury, fol-
low the Pressure Relief Procedure on
page 5 before checking or servicing
any part of the system and whenever you are
instructed to relieve the pressure.
To reduce the risk of a punture wound, hold the
valve securely, and keep your hands away from the
needle nozzle when operating the valve.
Tools Required
DAdjustable Wrenches
DTorque Wrench
D1/4 in. (6 mm) Diameter Rod
DFlat Blade Screwdriver
DO-ring Pick
DPTFE Tape
DMedium Strength Thread Sealant
Disassembly
NOTE: Repair Kit 235272 is available to service the
dispense valve. For the best results, use all the parts
in the kit, even if the old parts look good. Parts in-
cluded in the kit are marked with an asterisk, for exam-
ple (1*).
1. Shut off the fluid supply. Follow the Pressure Re-
lief Procedure on page 5.
2. Disconnect the air and fluid lines to the dispense
valve.
3. Using a wrench on the flats, unscrew the needle
nozzle housing (12) from the valve housing (11).
See Fig. 4.
NOTE: To change the needle nozzle, see page 3.
4. Using a wrench, unscrew the valve housing (11)
from the cylinder (9). Pull the housing away from
the cylinder, being careful not to damage the valve
needle (1) which is attached to the cylinder.
5. Pull the valve seat (13) out of the valve housing
(11). Inspect the seat for wear.
NOTE: The valve seat (13) is reversible.
6. Unscrew the packing retainer (4) from the valve
housing (11) with a flat blade screwdriver. Using an
o-ring pick, remove the u-cup packing (3) from the
housing. Clean the housing in a compatible sol-
vent.
7. Inspect the valve needle (1) for scoring or damage.
If damaged, unscrew it from the cylinder (9).
Reassembly
1. Apply medium strength sealant to the threads of
the valve needle (1*), and screw it into the cylinder
(9) until it bottoms out. Torque to 6–10 in–lb
(0.7–1.1 N.m).
2. Lubricate the PTFE u-cup (3*). Using a 1/4 in. (6
mm) diameter rod, gently work the u-cup into the
valve housing (11) until it seats, with the lips facing
into the housing.
3. Apply medium strength sealant to the threads of
the packing retainer (4*) and screw it into the valve
housing (11) until it bottoms out. Torque to 20–30
in–lb (2.3–3.4 N.m).
4. Orient the air inlet fitting (A) and the fluid inlet (C)
in any position you wish, relative to each other.
Join the cylinder (9) and valve housing (11), care-
fully guiding the needle (1*) into the valve housing
(11) and through the u-cup (3*). Screw the valve
housing (11) onto the cylinder (9), handtight.
5. Insert the valve seat (13*) into the male end of the
valve housing (11) until it bottoms out.
6. Apply medium strength sealant to the threads of
the needle nozzle housing (12) and screw it onto
the valve housing (11). Torque to 20–30 in–lb
(2.3–3.4 N.m).
NOTE: If the needle nozzle (14) was removed from the
housing (12), replace as explained on page 3.
7. Reconnect the air and fluid lines to the dispense
valve.

8308266
Service
Fig. 4
01798
9
12
11
*3
*1
8
76
13*
4*
14
A
Model 224906 Shown
1
2
3
4
5
6
Apply PTFE tape.
Apply sealant.
Torque to 20–30 in–lb (2.3–3.4 N.m).
Seat is reversible.
Torque to 6–10 in–lb (0.7–1.1 N.m).
Lubricate.
Lips must face into housing (11).
Inspect weep hole for buildup of fluid,
which could indicate a leaking u-cup (3).
7
8
1
2 4
6
3 7
2 5
2 4
8
KEY
1 Valve Needle
3 PTFE U-Cup Packing
4 Packing Retainer
6 Adjustment Knob
7 Adjustment Screw
8 Lock Nut
9 Cylinder
11 Valve Housing
12 Needle Nozzle Housing
13 Valve Seat
14 Needle Nozzle
A Air Inlet Fitting (Model 224906 Shown)
C Fluid Inlet
C

9308266
Notes

10 308266
Parts
Model 224906, Series A
Dispense Valve
Includes items 1–14
Ref Part
No. No. Description Qty
1* 187588 NEEDLE, valve; stainless steel 1
3* 111288 PACKING, u-cup; graphite-filled
PTFE w/stainless steel spring 1
4* 187590 RETAINER, packing; carbon steel 1
5Y188288 LABEL, warning 1
6 111870 KNOB, screw 1
7 111534 SCREW, cap, socket hd;
1/4–28 unf–3a x 1.5 in. (38 mm) long 1
8 100070 NUT, hex; 1/4–28 1
9 187593 CYLINDER, air; stainless steel and
aluminum alloy; buna-N seals 1
10 198171 TUBE FITTING, elbow; 90_;
1/8 npt(m) x 0.156 in. (4 mm) OD tube 1
11 235358 HOUSING, valve, w/swivel nut;
stainless steel wetted section 1
Ref Part
No. No. Description Qty
12 188287 HOUSING, needle nozzle;
stainless steel 1
13* 187587 SEAT, valve; acetal 1
14{112000 NOZZLE, needle; stainless steel;
.047 in. (1.19 mm) ID. 1/8 npt(m) 1
112001 NOZZLE, needle; stainless steel;
.063 in. (1.60 mm) ID; 1/8 npt(m) 1
* These parts are included in Repair Kit 235272, which may
be purchased separately.
{Additional needle nozzle sizes are available as accesso-
ries. See page 12.
YReplacement Warning labels are available at no cost.
01798
10
9
12
11
3*
1*
8
76
13*
4*
14{
5