Graco Husky 2150 Instructions-Parts List Manual page 7

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. 3. To
change the orientation of the inlet and/or outlet port:
1. Remove the screws (106) holding the inlet (102)
and/or outlet (103) manifold to the covers (101).
2. Reverse the manifold and reattach. Install the
screws and torque to 120 to 150 in-lb (14 to 17
N.m).
KEY
N 1/2 npt(f) air inlet port
P Muffler. Air exhaust
port is 3/4 npt(f).
R 2 npt(f) fluid
inlet port
S 2 npt(f) fluid
outlet port
Apply medium-strength (blue) LoctiteR or equivalent
1
to the threads. Torque to 120 to 150 in-lb
(14 to 17 N.m).
Apply medium-strength (blue) LoctiteR or equivalent
2
to the threads. Torque to 190 to 220 in-lb
(22 to 25 N.m).
N
P
102
Fig. 3
Installation
101 Covers
102 Fluid inlet manifold
103 Fluid outlet manifold
106 Manifold and cover
screws
112 Cover screws
(top and bottom)
Aluminum Model Shown
103
S
1
106
2
106
101
112
2
R
03940B
Fluid Pressure Relief Valve
CAUTION
Some systems may require installation of a pres-
sure relief valve at the pump outlet to prevent
overpressurization and rupture of the pump or
hose. See Fig. 4.
Thermal expansion of fluid in the outlet line can
cause overpressurization. This can occur when
using long fluid lines exposed to sunlight or ambi-
ent 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.
KEY
R 2 npt(f) fluid inlet port
S 2 npt(f) fluid outlet port
V Pressure relief valve
Part No. 110134 (aluminum)
Part No. 112119 (stainless steel)
1
Install valve between fluid inlet and outlet ports.
2
Connect fluid inlet line here.
3
Connect fluid outlet line here.
Fig. 4
3
S
1
V
2
R
03941B
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