Instructions–Parts List
HIGH PRESSURE
306860S
Back Pressure Regulator
For use in a high pressure spray circulating system to regulate back pressure to gun(s)
and maintain proper pressure for circulation. For professional use only.
Not approved for use in European explosive atmosphere locations.
CARBON STEEL REGULATORS
Part No. 206819, Series F
3000 psi (21 MPa, 207 bar) Maximum Working Pressure
1000–3000 psi (7–21 MPa, 70–207 bar) Regulated Fluid Pressure Range
Part No. 222405, Series B
3000 psi (21 MPa, 207 bar) Maximum Working Pressure
0–1000 psi (0–7 MPa, 0–70 bar) Regulated Fluid Pressure Range
EN
STAINLESS STEEL REGULATOR
Part No. 238926, Series A
3000 psi (21 MPa, 207 bar) Maximum Working Pressure
1000–3000 psi (7–21 MPa, 70–207 bar) Regulated Fluid Pressure Range
Part No. 26A081, Acid Compatible
3000 psi (21 MPa, 207 bar) Maximum Working Pressure
1000–3000 psi (7–21 MPa, 70–207 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 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 12. . . . . . . . . . . . . . . . . . . . . . . . . .
06863
Symbols
Warning Symbol
WARNING
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 not sure, call your Graco distributor.
D Do not alter or modify this equipment.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
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 Do not exceed the maximum working pressure of the lowest rated system component. Refer to the
Technical Data on page 11 for the maximum working pressure of this equipment.
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 Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 180_F (82_C) or below –40_F (–40_C).
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.
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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 medi-
cal attention.
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 back pressure 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.
306860 3
Important Acid Catalyst Information
Regulator model 26A081 is designed for acid catalyst (”acid”) currently used in two–component, wood finishing
materials. Current acids in use (with pH levels as low as 1) are more corrosive than earlier acids. More corrosion–
resistant wetted materials of construction are required, and must be used without substitution, to withstand the
increased corrosive properties of these acids.
WARNING
Acid is flammable, and spraying or dispensing acid creates potentially harmful mists, vapors, and
atomized particulates. To help prevent fire and explosion and serious injury:
D Read and understand the fluid manufacturer’s warnings and Safety Data Sheet (SDS) to know
specific hazards and precautions related to the acid.
D Use only genuine, manufacturer’s recommended acid–compatible parts in the catalyst system
(hoses, fittings, etc.). A reaction may occur between any substituted parts and the acid.
D To prevent inhalation of acid mists, vapors, and atomized particulates, everyone in the work area
must wear appropriate respiratory protection. Always wear a properly fitting respirator, which may
include a supplied–air respirator. Ventilate the work area according to instructions in the acid
manufacturer’s SDS.
D Avoid all skin contact with acid. Everyone in the work area must wear chemically impermeable
gloves, protective clothing, foot coverings, aprons, and face shields as recommended by the acid
manufacturer and local regulatory authority. Follow all fluid manufacturer recommendations, including those regarding handling of contaminated clothing. Wash hands and face before eating or
drinking.
D Regularly inspect equipment for potential leaks and remove spills promptly and completely to avoid
direct contact or inhalation of the acid and its vapors.
D Keep acid away from heat, sparks, and open flames. Do not smoke in the work area. Eliminate all
ignition sources.
D Store acid in the original container in a cool, dry, and well–ventilated area away from direct sunlight
and away from other chemicals in accordance with acid manufacturer’s recommendation. To avoid
corrsion of containers, do not store acid in substitute containers. Reseal the original container to
prevent vapors from contaminating the storage space and surrounding facility.
Moisture Sensitivity of Acid Catalysts
Acid catalysts can be sensitive to atmospheric moisture and other contaminants.
Notice
Acid build–up will damage the seals and reduce the performance and life of the regulator. To prevent exposing
acid to moisture:
D Always use a sealed container with a desiccant dryer in the vent, or a nitrogen atmosphere. Never store acids
in an open container.
D Use only moisture–proof hoses compatible with acids.
D Always lubricate threaded parts with an appropriate lubricant when reassembling.
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