Graco 307212ZAC User Manual
Instructions–Parts List
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)
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for Table of Contents. See page 3 for
List of Models.
307212ZAC
EN
Table of Contents
Models 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Charts 23. . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 307212
Spring Operated Fluid Regulators
Models
Part No. Series Maximum Fluid Inlet
Pressure, psi (kPa, bar)
214895 H 250 (1800, 18) 5–100 (34–700, 0.3–7) No n/a
214706 H 250 (1800, 18) 5–100 (34–700, 0.3–7) Yes (see 0–100 (0–700, 0–7)
24A082 A 250 (1800, 18) 5–100 (34–700, 0.3–7) Yes (see 0–100 (0–700, 0–7)
255374 B 250 (1800, 18) 5–100 (34–700, 0.3–7) Yes (see 0–200 (0–1400, 0–14)
217314 F 250 (1800, 18) 20–160 (140–1100, 1.4–11) Yes 0–300 (0–2100, 0–21)
221118 E 250 (1800, 18) 20–160 (140–1100, 1.4–11) No n/a
ISO pitch thread inlet and outlet. Not compatible with US standard pitch.
Fluid housing coated with PTFE polymer.
Regulated Pressure
Range, psi (kPa, bar)
Gauge Gauge Pressure
Range,
psi (kPa, bar)
below)
below)
below)
These models are and certified.
The fluid supply system’s main line pressures often exceed the pressure range of the gauge supplied
with regulators 214706, 255374, and 24A082. Exposing this gauge to excessive pressure can damage
the gauge, causing inaccurate readings and the needle will not return to zero.
This damage is not covered by the Graco warranty.
Air Operated Fluid Regulators
Part No. Series Maximum
Regulated
Air Pressure,
psi (kPa, bar)
214980 F 30 (210, 2.1) 250 (1800, 18) 0–30 (0–210, 0–2.1) Yes 0–30 (0–210, 0–2.1)
244375 B 100 (700, 7) 250 (1800, 18) 5–100 (34–700, 0.3–7) No n/a
Regulated air pressures from 30–100 psi (210–690 kPa, 2.1–6.9 bar) may be used if a 100 psi rated gauge is
installed.
Maximum Fluid
Inlet Pressure,
psi (kPa, bar)
Regulated Pressure
Range,
psi (kPa, bar)
Gauge Gauge Pressure
Range,
psi (kPa, bar)
3307212
Notes
4 307212
WARNING
PRESSURIZED EQUIPMENT HAZARD
Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin
and cause serious injury.
Do not stop or deflect fluid leaks with your hand, body, glove, or rag.
Follow the Pressure Relief Procedure on page 8 whenever you: are instructed to relieve the
pressure; stop spraying; clean, check, or service the equipment; and install or clean the fluid
nozzle.
Tighten all the fluid connections before operating the equipment.
Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
EQUIPMENT MISUSE HAZARD
INSTRUCTIONS
Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result
in a serious injury.
This equipment is for professional use only.
Read all the instruction manuals, tags, and labels before operating the equipment.
Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
Check the equipment daily. Repair or replace worn or damaged parts immediately.
Do not exceed the maximum working pressure of the lowest rated system component.
Use fluids that are compatible with the equipment wetted parts. See the Technical Data section of
all the equipment manuals. Read the fluid manufacturer’s warnings.
Never use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents, or
fluids containing such solvents in these regulators. In the event that there is a diaphragm failure, a
serious chemical reaction could occur, with the possibility of explosion.
Route the hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not
expose Graco hoses to temperatures above 180F (82C) or below –40F (–40C).
Never kink or over bend the hoses or use the hoses to pull equipment.
Comply with all applicable local, state, and national fire, electrical, and other safety
regulations.
5307212
Installation
Spring Operated Installation
Models 214895, 214706, 217314,
221118, 255374, and 24A082
BACK
PRESSURE
VALV E
FLUID RETURN
Fig. 1
Pilot Regulator Air Supply Line
Air Operated Installation
Model 214980 shown
INLET BALL VALVE
PIPE NIPPLES
FLUID REGULATOR
FLUID SUPPLY
OUTLET BALL VALVE
AIR FILTER
& REGULATOR
AIR REGULATOR
BYPASS VALVE
AIR SUPPLY
Fig. 2
INLET BALL VALVE
OUTLET BALL VALVE
AIR FILTER
MOISTURE SEPARATOR
& REGULATORS
6 307212
Installation
Fluid pressure regulators are used for accurate, positive control of the fluid pressure to spray guns, dispensing 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 or
atomizing head.
Before Installing the Fluid Regulator
1. Determine where to locate the regulator.
2. Install a ball valve for the regulator inlet and outlet.
3. Install temporary plumbing between the 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 for each spray gun. See the Dimension-
al Drawing on page 21 for regulator dimensions.
Mount the regulator in a vertical position, as shown
in Figs. 1 and 2, for the best flow and minimum
pigment settling. The gauge, if used, must be
mounted vertically. If the regulator is mounted
horizontally, an elbow must be used so the gauge
will be vertical.
2. Put sealer on threaded connections, except on the
swiveling end of swivel unions as it interferes with
the swivel action.
3. Flush and test the entire system. Be sure to follow
the flushing procedure on page 8.
7307212
Operation
CAUTION
The new system must be cleaned and tested
thoroughly before admitting fluid to the regulator
to avoid contaminants clogging or damaging the
regulator.
Always 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 in parentheses
in the text refer to the Figs. and Parts Drawing.
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
Read warnings, page 5.
1. Shut off the pump.
2. Shut off the pump and relieve fluid pressure in the
system by triggering the gun and opening the back
pressure regulator or other bypass valve.
3. Never exceed the maximum working pressure of
the lowest rated system component. Remove the
gauge if the flushing pressure will exceed the
gauge range.
4. Open the fluid regulator fully.
a. Spring Operated Regulators Only (see Fig. 3).
The regulator can be fully opened in two ways:
Using the male end (B) of the regulator
key (24), turn the socket–head adjustment
screw (19) fully counterclockwise. The
pressure setting will be retained.
Using the female end (A) of the regulator
key (24), turn the adjustment screw (12)
fully clockwise. You will have to reset
pressure after flushing.
2. Close the fluid regulator’s inlet ball valve. Refer to
Figs. 1 and 2.
3. Relieve fluid pressure in the fluid regulator by
triggering the spray gun.
Flushing Procedure
Flush before changing colors, before fluid can dry in
the equipment, at the end of the day, before storing,
and before repairing equipment.
Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
1. Record the pressure adjustment setting of the fluid
regulator before flushing.
b. Air Operated Regulator Only. The regulator
can be fully opened in two ways:
Close the outlet valve at the air regulator
and open the air regulator bypass valve, to
supply air directly to the fluid regulator; do
not exceed the maximum rated air pressure of the fluid regulator. Pressure setting
of the fluid regulator will be retained using
this method.
Increase the air regulator setting to fully
open the fluid regulator. You will have to
reset the fluid regulator’s pressure setting
after flushing.
5. Supply solvent to the system. Set pump to the
lowest possible pressure, and start pump.
6. Flush until thoroughly clean.
8 307212
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