User's Manual
6 306520
Installation
Supply Lines From Pumps To Dispensing Units
Distance
Annealed Steel Tube Annealed Copper Tube Standard Iron Pipe
Min. O.D. Min. Tube Wall Fittings Min. O.D. Min. Tube Wall Fittings Min. Size Fittings
< 25 ft. (7.6 m) 5/8 in. 0.035 in.
(0.89)
Flareless 5/8 in.
type K
0.049 in.
(1.24 mm)
Flared 1/2 in. Heavy
malleable iron
> 25 ft. (7.6 m) 7/8 in. 0.035 in.
(0.89)
Flareless 7/8 in.
type K
0.065 in.
(1.65 mm)
Flared 3/4 in. Heavy
malleable iron
> 75 ft. (23 m) Contact your Graco distributor
Fig. 4
A
B
C
D
A Incoming supply line
B 3/4 in. npt line strainer
C Hose or pipe to metered unit
D Position outlet down
Fig. 5
01497
A
B
C
A 3 in. (76 mm), Supply line to wall
B 20 in. (510 mm), Main fluid shutoff valves
C 24 in. (610 mm), Main air line to floor
D 20 in. (510 mm), Between suction lines
D
TO OUTLET
1. Use a Y-type line strainer in oil supply lines. Locate
as close to the meter inlets as practical and where
they are easily accessible. Mount the strainer body
horizontally with the clean-out plug pointed down.
See Fig. 4. Periodically, relieve the pressure, and
remove and clean the metal strainers.
To order a 3/4 in. npt(f) line strainer, order Part No.
101078.
To order a 1/2 in. npt(f) line strainer, order Part No.
110877.
INJECTION HAZARD
To reduce the risk of serious injury
whenever you are instructed to relieve
pressure, always follow the Pressure
Relief Procedure on page 8.
WARNING
2. See Fig. 5 for installation dimensions for the
supply line. Space the line ends to be adjacent to
the pump location. For annealed steel or copper
tubing lines, use a straight male coupling elbow
and a shutoff valve. For iron pipe, a shutoff valve
may be used instead. The shutoff valve must close
off 1/2 in. npt(f) openings for the Fire-Ball 300
pump, and it must close off 3/4 in. npt(f) openings
for the Fire–Ball 425 pump.
Air Lines
Air lines
Annealed Copper
Tube
Galvanized Pipe
O.D.
Type
L
Minimum
Wall
Thickness
Nominal
Size
Pump to
main air
1/2 or
3/8 in.
0.035 in.
(0.89 mm)
1/2 in. or 3/8 in.
Compressor
to main air
1/2 in. 0.035 in.
(0.89 mm)
1/2 in. or 3/8 in.