Graco Series B Operation manual

STAINLESS STEEL, WATERBASE COMPATIBLE
Fluid Pressure Regulators
Used to regulate fluid pressure in low pressure systems only.
Fluid Flow up to 3 GPM (11 liters/min)
Fluid Flow up to 1.4 GPM (5.3 liters/min.)
Air Operated Regulators
250 psi (18 bar) Maximum Inlet Fluid Pressure
5 to 100 psi (0.3 to 7.0 bar) Regulated Fluid Pressure
Part No. 830351, Series B
Supplied with Dump Valve
Part No. 830352, Series B
Bare Regulator (order dump valve separately)
Part No. 830353, Series B
Without Dump Valve
Instructions–Parts List
308292C
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for table of contents.
Model 830353
02029

2 308292
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawings and Lists 9. . . . . . . . . . . . . . . . . . . . . . . .
Repair Kits 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Chart 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 14. . . . . . . . . . . . . . . . . . . . . .
Graco Information 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 cor-
responding instructions.
WARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
DFollow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
DTighten all fluid connections before operating the equipment.
DCheck hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
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.

308292 3
Installation
Fig. 1
02031
KEY
A Fluid Pressure Regulator
B Dump Valve (supplied on Model 830351)
C Inlet Ball Valve
D Outlet Ball Valve
E Main Air Line
F Air Filter and Moisture Separator
G Gun Air Regulator
H Air Regulator for Fluid Regulator
J Bleed-Type Master Air Valves
K Air Supply Line
L Gun Air Supply Line
M Air Spray Gun
N Gun Fluid Supply Line
P Fluid Return Line
R Back Pressure Valve
S Regulator Fluid Supply Line
T Dump Valve Pilot
U Pilot Air Line
V Fluid Dump Line
W Air Shutoff Valves
*A
B
C
D
E
FG
H
J
J
K
L
M
N
PR
S
T
UV
3
5
*NOTE: The fluid regulator (A) is shown from the top, to help
clarify its fluid and air connections. When installing the
regulator, orient it as shown on the front cover.
W
W

4 308292
Installation
Fluid pressure regulators (A) are used for accurate,
positive control of the fluid pressure to spray guns (M),
dispensing valves or atomizing heads.
Regulators installed at circulating line take-offs or with
pumps are used to reduce main line pressure and
maintain the desired fluid pressure to the spray gun or
atomizing head.
NOTE: Reference numbers and letters used in the text
refer to Figs. 1 and 2 and the Parts Drawings on pages
9 and 10.
Before Installing the Fluid Regulator
1. Determine where to locate the regulator (A). See
Fig. 1.
2. Install a ball valve at the regulator fluid inlet (C)
and outlet (D).
3. Install temporary plumbing between the inlet and
outlet ball valves.
4. Thoroughly flush the system to remove metal
chips and other contaminants and to check for
leaks.
Installing the Fluid Regulator
1. Remove the temporary plumbing and install one
regulator (A) for each spray gun (M). See Dimen-
sions,page 12, for regulator dimensions. Mount
the regulator with the fluid outlet at the bottom, for
the best flow and minimum pigment settling.
2. Install a bleed-type master air valve (J) in the air
supply line (K) to the fluid regulator, to relieve air
pressure in the fluid regulator after the air regulator
(H) is shut off.
3. Install another bleed valve (J) upstream from all
other air line accessories, to isolate the accesso-
ries for servicing.
4. Provide an air filter (F) to eliminate moisture and
harmful contaminants from the compressed air
supply.
5. Use air regulators (G, H) to control the air pressure
to the gun and fluid regulator. The fluid output
pressure of the fluid regulator is the same as the
air input pressure set on the air regulator (H).
6. Install air shutoff valves (W) on the air supply lines
to the gun and dump valve pilot.
7. On regulators with a dump valve, connect a
5/32 in. O.D. air line tube from the dump valve pilot
(T) to the air inlet fitting on the dump valve (B).
Connect a fluid dump line (V) to the 1/8 npt(f) port
of the dump valve. Place the free end of the dump
line in a properly grounded container to catch the
fluid.
8. Install a back pressure valve (R) to maintain
constant back pressure in the return line (P).
9. Connect the fluid supply line (S) to the regulator’s
swivel inlet (3). Connect the gun fluid supply line
(N) to the regulator’s angled fluid outlet (5).
10. Put pipe thread sealant on threaded connections,
except on swivel unions; sealant interferes with the
swivel action.
11. Flush and test the entire system. Be sure to follow
the flushing procedure on page 5.

308292 5
Operation
CAUTION
DThe new system must be cleaned and tested
thoroughly before admitting fluid to the regulator
to avoid contaminants clogging or damaging the
regulator.
DAlways use the lowest possible air and fluid
pressures for your application. High pressures
cause premature spray nozzle and pump wear.
NOTE: Reference numbers and letters used in the text
refer to Figs. 1 and 2 and the Parts Drawings on pages
9 and 10.
Pressure Relief Procedure
WARNING
To reduce the risk of an injury from injection,
splashing fluid, or moving parts, follow the Pres-
sure Relief Procedure whenever you:
Dare instructed to relieve the pressure,
DClean, check, or service any of the system
equipment,
1. Shut off the pump.
2. Close the fluid regulator’s inlet ball valve. Refer to
Fig. 1, page 3.
3. Relieve all fluid and air pressure in the fluid regula-
tor.
Regulating Fluid Pressure
1. Start the pump and open the fluid regulator’s inlet
ball valve (C) to admit fluid to the regulator. See
Fig. 1.
2. Increase the air pressure to obtain the desired fluid
pressure. Before reducing the regulator pressure,
partially relieve pressure in the gun fluid supply
hose to ensure the correct gauge reading.
NOTE: For the best results, use an air regulator with at
least a 2 in. (51 mm) diameter diaphragm to control
this fluid regulator.
Using the Dump Valve
1. Shut off the fluid supply to the regulator.
2. Trigger the dump valve pilot (T). The valve will
open and relieve fluid pressure in the regulator.
Flushing Procedure
1. Flush the regulator with a compatible solvent
whenever the rest of the system is flushed.
2. Remove the gauge if the fluid pressure will exceed
the gauge range.
3. Flush until thoroughly clean. Always use the lowest
possible pressure when flushing.

6 308292
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
Before servicing this equipment always make sure to
Relieve the Pressure.
Check all possible remedies in the Troubleshooting
Chart before disassembling the fluid regulator.
PROBLEM CAUSE SOLUTION
No pressure regulation. Damaged or clogged air regulator or
line. Clear obstruction in line. Service regula- tor if necessary.
Damaged diaphragm (10). Replace diaphragm.
Fluid leaks from under bowl
(18). Bowl is loose. Tighten screws (2). See Service sec- tion.
Worn gasket (15). Replace gasket. See Service section.
Pressure creeps above set-
ting. Damaged or clogged air regulator or line. Clear obstruction in line. Service regula- tor if necessary.
Damaged diaphragm (10). Replace diaphragm.
Seat (7) leaking. Replace stem assembly (16), gasket
(8), seat (7) and ball (17).
Pressure drops below setting. Damaged or clogged air regulator or
line. Clear obstruction in line. Service regula- tor if necessary.
Empty/clogged fluid supply line. Refill or flush supply line.
Clogged air spray gun or fluid dis-
pensing valve. Refer to gun or valve manual for service instructions.
Using regulator above its rated flow
capacity (see Technical Data, page
13).
Use additional regulators.

308292 7
Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
NOTE: Repair Kit 222651 is available to service the
regulator. See page 11 to order. Parts included in the
kit are marked with an asterisk, for example (6*).
1. Shut off the pump.
2. Close the ball valve at the regulator’s air inlet.
Refer to Fig. 1, page 3.
3. Release all the air and fluid pressure in the regula-
tor and disconnect the air and fluid lines.
4. Remove the swivel union (3), o-ring (6), and spring
(4) from the regulator bowl. See Fig. 2.
5. Remove the ball (17), seat (7) and gasket (8).
CAUTION
Use special care when handling the hard carbide ball
(17) and seat (7) to avoid damaging them.
6. Remove the six cap screws (2) while holding the
regulator housing (11) to the bowl (18). Separate
the bowl and housing.
7. Remove the jam nut (12) and washer (14) from the
stem assembly (16).
8. Remove the diaphragm (10) and gasket (15).
9. Thoroughly clean and inspect all parts. Replace
any parts that appear to be worn or damaged.
10. One at a time, place the gasket (15*), diaphragm
(10*) – white PTFE side facing up toward regulator
bowl, and washer (14) on the stem assembly (16).
Secure them with the jam nut (12). Torque the jam
nut to 15–19 ft–lb (20–25 NSm).
11. Install the assembled parts in the housing (11).
12. Install the regulator bowl (18) on the housing (11).
Tighten the six cap screws (2) in the sequence
shown in Fig. 2, Top View, and to the torque
noted.
13. Install the gasket (8*), valve seat (7*), and ball
(17*) into the bowl (18).
NOTE: The seat may be turned upside down and
reused.
14. Screw the swivel union (3), with the o-ring (6*)
attached and the spring (4*) in place, into the inlet.
Torque to 23–27 ft–lb (31–36 NSm).

8 308292
Service
Fig. 2
02032
5
2
4
6
1
3
TOP VIEW
NOTE: Numbers indicate tightening sequence. Tighten
evenly to 7–10 in–lb (0.8–1.1 NSm), then retorque to
125 in–lb (14 NSm) three times, consecutively, to
compensate for diaphragm relaxation.
3
4*
17*
7* 2
16
15*
10*1412
*8
*6
18
02090
11

22
21
18
*17
16
15*
14
12
11
10*
*8
*7
5
*6
*4
3
2
1
308292 9
Parts
Model 830352, Series B
Without dump. Includes items 1–22.
Model 830353
Without dump. Includes items 1–18.
Ref.
No. Part No. Description Qty.
1 178422 GASKET, fluid outlet; acetal 1
2 100644 SCREW, cap, socket hd;
1/4–20 x 0.75 in. (19 mm) long 6
3 235209 UNION, swivel, fluid inlet;
3/8 npsm(f); sst 1
4* 111858 SPRING, compression; sst 1
5 178415 CONNECTOR, fluid outlet;
1/4 npsm(m); sst 1
6* 104319 O-RING; PTFE 1
7* 112366 SEAT, valve; tungsten carbide 1
8* 171860 GASKET, seat; nylon 1
10* 171868 DIAPHRAGM; PTFE 1
11 833166 HOUSING, regulator; aluminum 1
12 171858 NUT, jam, special; cst 1
14 171862 WASHER; acetal 1
15* 172132 GASKET; cellulose fiber 1
16 836115 STEM ASSEMBLY; sst 1
17* 112365 BALL; tungsten carbide 1
18 833383 BOWL w/dump, regulator; sst;
Used on Model 830352 1
833382 BOWL w/o dump, regulator; sst;
Used on Model 830353 1
21 181036 COVER, dump port;
Used on Model 830352 only 1
22 102598 SCREW, cap, socket hd;
10–32 x 0.5 in. (13 mm) long;
Used on Model 830352 only 2
* These parts are included in Repair Kit 222651,
which may be purchased separately. See page 11
to order. The kit includes some parts not used on
these regulators.

02033
101
102
103
10 308292
Parts
Model 830351, Series B
With dump. Includes items 101–103.
Ref.
No. Part No. Description Qty.
101 218964 DUMP VALVE ASSEMBLY
See manual 307941 for parts 1
102 102598 SCREW, cap, socket hd;
10–32 x 0.5 in. (13 mm) long;
Used on Model 830352 only 2
103 830352 FLUID REGULATOR, bare
see page 9 for parts 1