7307044
Installation
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and parts
drawing.
The Typical Installation shown on page 6 is only a
guide for selecting and installing system components
and accessories. Contact your Graco distributor for
assistance in designing a system to suit your particular
needs.
System Accessories
See the Typical Installation on page 6.
WARNING
Two accessories are required in your system: a
bleed-type master air valve (A) and a fluid drain
valve (B). These accessories help reduce the risk
of serious injury including fluid injection, splashing
in the eyes or on the skin, and injury from moving
parts if you are adjusting or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the air
regulator is shut off. Trapped air can cause the
pump to cycle unexpectedly. Locate the valve close
to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
Mounting Accessories
Mount the pump to suit the type of installation planned.
The pump dimensions and mounting hole layout are
shown on page 18.
The bung adapter has 2” npt threads. Install the pump
in the drum cover until it is 1/2” (13 mm) from the
bottom of the drum, then tighten the bung adapter.
Air and Fluid Hoses
Be sure all air and fluid hoses are properly sized and
pressure-rated for your system. Use only electrically
conductive air and fluid hoses. Fluid hoses must have
spring guards on both ends.
Connect an electrically conductive fluid hose (H) to the
pump’s 3/4 npt(f) fluid outlet.
Connect an electrically conductive 3/8 in. ID (mini-
mum) air hose (G) to the pump’s 3/8 npt(f) air inlet.
Air Line
Install the following accessories in the order shown in
the Typical Installation, using adapters as necessary:
DA pump runaway valve (J) senses when the
pump is running too fast and automatically shuts off
the air to the motor. A pump which runs too fast can
be seriously damaged. Install closest to the pump
air inlet.
DAn air line lubricator (C) provides automatic air
motor lubrication.
DA bleed-type master air valve (A) is required in
your system to relieve air trapped between it and
the motor when the valve is closed (see the WARN-
ING at left). Be sure the bleed valve is easily ac-
cessible from the pump, and is located downstream
from the air regulator.
DAn air regulator (D) controls pump speed and
outlet pressure by adjusting the air pressure to the
pump. Locate the regulator close to the pump, but
upstream from the bleed-type master air valve.
DAn air line filter (E) removes dirt and moisture
from the compressed air supply.
DA second bleed-type air valve (F) isolates the air
line accessories for servicing. Locate upstream
from all other air line accessories.
Fluid Line
DA fluid drain valve (B) is required in your system
to relieve fluid pressure in the hose and gun (see
the WARNING at left). Install the drain valve point-
ing down, but so the handle points up when
opened.
