Graco Husky 1040, Instructions-Parts List Manual

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10 308443
Installation
Changing the Orientation of the Fluid Inlet
and Outlet Ports
The pump is shipped with the fluid inlet (R) and outlet
(S) ports facing the same direction. See Fig. 4. To
change the orientation of the inlet and/or outlet port:
1. Remove the screws (106 or 112) holding the inlet
(102) and/or outlet (103) manifold to the covers
(101).
2. Reverse the manifold and reattach. Install the
screws (106 or 112). Torque the manifold screws to
80 to 90 in-lb (9 to 10 N-m). See Fig. 4. See
Torque
Sequence , page 32.
KEY
N 1/2 npt(f) air inlet port
P Muffler; air exhaust port
is 3/4 npt(f)
R 1” fluid inlet port
S 1” fluid outlet port
101 Covers
102 Fluid inlet manifold
103 Fluid outlet manifold
106 Manifold screws
112 Manifold screws
Acetal Model Shown
N
P
103
106
S
101
R
112
102
Torque to 80 to 90ft-lb (9 to 10 N-m).
See
Torque Sequence , page 32
1
1
1
Fig. 4
Fluid Pressure Relief Valve
CAUTION
KEY
R 1” fluid inlet port
S 1” fluid outlet port
V Pressure relief valve
Part No. 112119 (stainless steel)
Install valve between fluid inlet and outlet ports
1
Connect fluid inlet line here.
2
Connect fluid outlet line here.
3
S
R
V 1
2
3
Fig. 5
Some systems may require installation of a pressure
relief valve at the pump outlet to prevent
overpressurization and rupture of the pump or hose.
See Fig. 5.
Thermal expansion of fluid in the outlet line can
cause overpressurization. This can occur when using
long fluid lines exposed to sunlight or ambient heat,
or when pumping from a cool to a warm area (for
example, from an underground tank).
Overpressurization can also occur if the Husky pump
is being used to feed fluid to a piston pump, and the
intake valve of the piston pump does not close,
causing fluid to back up in the outlet line.