Orientation Of Fluid Inlet And Outlet Ports; Fluid Pressure Relief Valve - Graco Aluminum Husky 2150 LP Instructions Manual

Orientation of Fluid Inlet and
Outlet Ports
The fluid port of the center manifold can be rotated to
either a vertical or horizontal position.
To change the fluid port orientation of the center
manifold (113):
1. Remove the manifold screws (120).
2. Rotate the center manifold (113) to the applicable
vertical or horizontal position.
3. Install the manifold screws (120) and torque to 50–
60 in-lb (5.65–6.78 N•m). See Torque Sequence,
page 29.
KEY:
101 Fluid covers
120 Screw
113 Center manifold
120
101
120
1
101
Apply medium-strength (blue) thread locker to the
1
threads. Torque to 50–60 in-lb (5.65–6.78 N•m). See
Torque Sequence, page 29.
F . 4: Fluid Inlet and Outlet Port Orientation
IG
3A8693B
1
113
120
1
113
120
1

Fluid Pressure Relief Valve

Some systems may require installation of a pressure
relief valve (V) at the pump outlet to prevent
overpressurization and rupture of the pump or hose.
Thermal expansion of fluid in the outlet line can cause
overpressurization. Thermal expansion 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 also can occur if the pump is 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.
The pressure relief valve reduces the risk of serious
injury, including splashing in the eyes or on the skin.
Fluid Pressure Relief Valve 112119 (stainless steel) is
available (purchase separately).
KEY:
R Fluid inlet port
S Fluid outlet port
V Pressure relief valve
Install valve between fluid inlet and outlet ports.
1
Connect fluid inlet line here.
2
Connect fluid outlet line here.
3
2
V
1
3
F . 5: Fluid Pressure Relief Valve
IG
Installation
R
S
11