Instructions–Parts List
HIGH PRESSURE
306878W
ENG
Fluid Regulators
For use in airless spray systems to control and regulate fluid pressure to one
spray gun, dispensing valve, or atomizing head. For professional use only.
3000 psi (21 MPa, 207 bar) Maximum Working Pressure
Model 206661, Series G
1000–3000 psi (7–21 MPa, 70–207 bar)
Regulated Fluid Pressure Range
Model 217576, Series D
200–1000 psi (1.4–7 MPa, 14–70 bar)
Regulated Fluid Pressure Range
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Table of Contents
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
WARNING
INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also
cause serious injury.
D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate
surgical treatment.
D Do not stop or deflect leaks with your hand, body, glove or rag.
D Keep your hands away from the end of the drain valve when opening it.
D Lock the gun trigger safety when you stop spraying.
D Follow the Pressure Relief Procedure on page 7 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
D Follow the Pressure Relief Procedure on page 7 before removing the regulator’s adjusting knob.
D Do not pressurize the system when the fluid regulator’s adjusting knob is removed.
D Tighten all fluid connections before operating the equipment.
D 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.
D Use only Graco approved hoses. Do not remove the spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
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 Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
306878 3
Installation
Fluid pressure regulators are used for accurate, posi-
tive control of the fluid pressure to spray guns, dis-
Installing the Fluid Regulator
1. Remove the temporary plumbing and install one
regulator for each spray gun. A mounting stud,
washers, and locknut are provided for mounting
the regulator either from the bottom or side.
pensing valves or atomizing heads.
Regulators installed at circulating line take-offs or
pumps are used to reduce main line pressure and
maintain the desired fluid pressure to the spray gun,
dispensing valve, or atomizing head.
2. Put sealer on threaded connections, except on
swivel unions as it interferes with the swivel action.
Before Installing the Fluid Regulator
3. Connect the fluid supply line to the 3/8 npt(f) inlet
of the fluid regulator. Connect the fluid line be-
tween the gun and the regulator’s 1/4 npt(f) outlet
of choice. MAKE SURE that the direction of fluid
flow agrees with the IN and OUT markings on the
regulator body.
1. Determine placement of the fluid regulator in
system.
2. Install a ball valve for inlet and outlet of the regula-
tor.
3. Install temporary plumbing between the ball
valves.
4. Flush and test the entire system.
4. Thoroughly flush the system to remove metal
chips and other contaminants and to check for
leaks.
4 306878
Installation
AIR REGULATOR
Single Direct Spray Station
FLUID REGULATOR
GAUGE
PUMP
SPRAY GUN
FLUID DRAIN VALVE
SUPPLY
CONTAINER
Fig 1
Multiple Circulating Spray Station
FLUID RETURN LINE
BACK
PRESSURE
VALVE
PUMP
AIR REGULATOR
FLUID REGULATOR
SPRAY GUN
FLUID DRAIN VALVE
SUPPLY
CONTAINER
Fig 2
306878 5
Notes
6 306878
Operation
6. Open the drain valve (required in your system),
Pressure Relief Procedure
having a container ready to catch the drainage.
WARNING
INJECTION HAZARD
7. Leave the drain valve open until you are ready to
spray again.
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
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:
Adjusting the Regulator
D are instructed to relieve the pressure,
The fluid pressure regulator controls pressure down-
stream from its outlet.
D stop spraying,
To adjust the fluid regulator, first, back the knob out
until there is no spring pressure. Then, turn the knob
clockwise to increase pressure.
D check or service any of the system equipment,
D or install or clean the spray tip.
NOTE: If you are using an accessory fluid pressure
gauge, relieve the spray gun line when reducing pres-
sure to ensure a correct gauge reading.
1. Lock the gun trigger safety.
2. Close the bleed-type master air valve (required in
your system).
Adjust the pump air pressure and the fluid regulator for
the best spraying combination. In a circulating system,
also adjust the back pressure valve.
3. Unlock the gun trigger safety.
Record all the settings for future reference. The valve
cylinder (7) has exterior markings (set points 1 to 8) for
repeat settings.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
5. Lock the gun trigger safety.
306878 7
Maintenance
Cleaning
WARNING
When changing fluids or colors, the regulator should
be disassembled and cleaned. Regular cleaning and
inspection, and lubrication of the piston (15) and piston
packing (10) are necessary to keep the fluid regulator
working properly.
COMPONENT RUPTURE HAZARD
To reduce the risk of serious bodily inju-
ry, including fluid injection or splashing in
the eyes or on the skin, always follow
the Pressure Relief Procedure on page 7 before
adjusting, cleaning, repairing, or removing the regu-
lator from the system.
1. Relieve all the air and fluid pressure in the system.
2. Remove the regulator from the system.
Never pressurize the system with the fluid regula-
tor adjusting knob removed.
3. Disassemble the regulator, referring to the Parts
Drawing on page 9. Clean and inspect all parts.
Never completely remove the adjusting knob when
system pressure is present.
CAUTION
Use special care when handling the hard carbide
portions of the piston (13) and seat (12). Damage will
cause poor operation and leakage.
Flushing
D Flush before changing colors, before fluid can dry in
the equipment, at the end of the day, before storing,
and before repairing equipment.
Repairing
D Flush at the lowest pressure possible. Check
Normally, only the ball support (21), seat (20) and
piston packing (10) will ever need replacement. Repair
Kit 220139 is available to replace these parts. See
page 9.
connectors for leaks and tighten as necessary.
D Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
1. Lubricate the piston packing (10), piston (15), and
spring locater (11) with lithium base grease.
1. Record the pressure adjustment setting of the
regulator before flushing.
2. Place the washer (19) over the pointed end of the
piston (15).
2. Shut off the pump and relieve fluid pressure in the
system by triggering the gun and opening the back
pressure valve or other bypass valve.
3. Place the packing (10), with its lips facing down,
over the pointed end of the piston (15) and against
the washer (19).
3. Never exceed the maximum working pressure of
the lowest rated system component.
4. Insert the piston (15) into the bottom of the cylin-
der (7) and gently work it into place.
4. Open the fluid regulator by turning the adjusting
knob (6) fully clockwise.
5. Reassemble the remaining parts in reverse order
of disassembly. Torque the valve seat (20) into the
housing to 175 to 200 in-lb (20 to 22 NSm). Over
tightening could break off the hex portion of the
seat.
5. Supply solvent to the system. Set pump to the
lowest possible pressure, and start pump.
6. Flush until thoroughly clean.
7. Adjust the fluid regulator to return to the desired
fluid pressure setting.
NOTE: Do not allow paint or solvent to set in the
system for a long time. Fluid could dry on the piston,
causing leakage at the piston packing. If leakage
occurs, disassemble and clean the regulator.
8 306878
Parts
16
18
6
8n
13
9
8
11
5*
7
Torque to
20*
175 to 200 in-lb
(20 to 22 NSm)
17
*10
19
3
Use Loctiter Grade
TL242 on threads
2
Install with
lips down
14
12
*15
1
Torque to
55 to 65 in-lb
Mounting
Parts
Use Loctiter
Grade 601
on threads
26
1
(6.3 to 7.3 NSm)
4
Model 206661, Series G
Includes items 1–20
Model 217576, Series D
Includes items 1–26
REF
REF
NO. PART NO. DESCRIPTION
QTY
NO. PART NO. DESCRIPTION
QTY
1
100322
100639
101885
101954
150513
100307
LOCK WASHER, ext shkprf; 7/16” 2
(Model 206661 only)
11
12
166988
167001
LOCATER, spring
STUD, mounting; 1/4 npt; 7/16–20 1
(Model 206661 only)
STUD, mounting; 1/4 npt; 3/8–16 1
(Model 217576 only)
HOUSING, regulator
CAP, end
1
LOCK WASHER, ext shkprf; 3/8”
(Model 217576 only)
SCREW, soc hd cap; 1/4–20 x
1–3/4”
2
2
156953
2
3
4
13
14
15
16
17
18
19
177125
167016
220900* PISTON, valve
167018
167019
167020
171885
1
1
1
1
1
2
1
RING, int retaining; 0.75” (19 mm) 1
housing dia.; cadmium plated
NUT, jam; 7/16–20
(Model 206661 only)
NUT, jam; 3/8–16
1
1
BAR, piston
BAR, valve ball support
SPACER, bar
(Model 217576 only)
WASHER, back–up; acetal
5
6
7
8
9
150670* GASKET; copper
1
1
1
2
1
homopolymer
248899* SEAT, valve, support ball
WASHER; 3/8”
(Model 217576 only)
These parts are included in Repair Kit 220139,
166976
KNOB, adjusting
20
26
1
1
166982
CYLINDER, regulator
100023
166985n SEAL, o–ring; PTFE
166986
SPRING, helical compression
*
(Model 206661 only)
which may be purchased separately.
501511
SPRING, helical compression
(Model 217576 only)
1
1
n Keep these spare parts on hand to reduce down
time.
10
111796* PACKING, u–type; PTFE
306878 9
Notes
10 306878
Accessories
Use Only Genuine Graco Parts and Accessories
Compression Springs
Fluid Pressure Gauges
Attaches to optional regulator outlet.
2 in. (51 mm) dial.
NOTE: On Model 206661, standard spring 166986
(ref. no. 9) works best at 2000–3000 psi (13.5–21
MPa,135–207 bar), although it will work at 1000 to
2000 psi (7–13.5 MPa, 70–135 bar). For best results at
pressures less than 2000 psi (13.5 MPa, 135 bar),
order the following applicable spring.
102397
101696
0–3000 psi (0–21 MPa, 0–207 bar)
1/4 npt(m) center back fitting
0–1000 psi (0–7 MPa, 0–70 bar)
1/4 npt(m) bottom fitting
501510
501511
Recommended for 1000–2000 psi
(7–13.5 MPa, 70–135 bar). Red color.
Recommended for 0–1000 psi (0–7
MPa, 0–70 bar) range. Blue color.
(Standard on model 217576)
UHMW Polyethylene U-Type Packing
108317 (included in Repair Kit 220135)
Use instead of 111796 (ref. no. 10), with abrasive
fluids.
Optional Valve Seat 206523
For use in low flow rate applications.
Technical Data
Category
Data
Maximum Fluid Inlet Pressure
Regulated Fluid Pressure Range
3000 psi (21 MPa, 207 bar)
Models 206661: 1000–3000 psi (7–21 MPa, 70–207 bar)
Model 217576: 200–1000 psi (1.4–7 MPa, 14–70 bar)
Maximum Flow Rate
Fluid Inlet
3.5 gpm (13.25 liters/min) with 70 centipoise fluid at 75_F (23_C)
3/8 npt(f)
Fluid Outlet (two)
Height
1/4 npt(f)
6 in. (152 mm)
2.687 in. (68 mm)
Diameter
Wetted Parts
Tungsten Carbide, Copper, Cadmium and Zinc–plated Steels, Acetal
Homopolymer, PTFE, Chrome–plated Stainless Steel
Canadian Registration Number (CRN): Models 206661 and 217576
Alberta – 0C04874.52
Ontario – 0C4874.5R1
306878 11
Graco Standard Warranty
Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the
date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of any special, extended, or limited
warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment
determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accor-
dance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or sub-
stitution of non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,
installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and
transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection
with accessories, equipment, materials or components sold but not manufactured by Graco. These items sold, but not manufactured
by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide
purchaser with reasonable assistance in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,
breach of warranty, the negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnais-
sent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires
exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.
Graco Information
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.
Original instructions. This manual contains English. MM 306878
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 1992, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Revised 07/2011
12 306878
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