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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.
