VERDER VERDERAIR VA 40 Instructions Manual page 9

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 and 112) 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 9–10 N.m.
KEY
N 1/2 npt(f) Air Inlet Port
P Muffler; Air Exhaust Port
is 3/4 npt(f)
R 1–1/2" Fluid Inlet Flange
S 1–1/2" Fluid Outlet
Flange
101 Fluid Covers
N
P
102
Fig. 4
102 Fluid Inlet Manifold
103 Fluid Outlet Manifold
106 Fluid Outlet Manifold
Screws (Top)
112 Fluid Inlet Manifold
Screws (Bottom)
1
Torque to 9–10 N.m.
103
106
1
101
112
1
04700B
Fluid Pressure Relief Valve
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 over-
pressurization. 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 VERDERAIR VA 40
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 1–1/2" Fluid Inlet Flange
S 1–1/2" Fluid Outlet Flange
V Pressure Relief Valve
Part No. 819.0158 (Aluminum)
S
Part No. 819.0159 (Stainless Steel)
1
Install valve between fluid inlet and outlet ports.
2
Connect fluid inlet line here.
3
Connect fluid outlet line here.
R
Fig. 5
Caution
S
R
819.4486
3
V
1
2
04702B
9