EBARA EFQT3 - Manual (Page 12)

EBARA Fluid Handling 12
The valve inlet must be installed between
the pump discharge port and the non-
pressurized side of the discharge check
valve. The valve inlet is it at the large end of
the valve body, and is provided with
standard 1-inch NPT pipe threads.
The valve outlet is located at the opposite
end of the valve, and is also equipped with
standard 1-inch NPT pipe threads. The
outlet should be connected to a bleed line
which slopes back to the wet well or sump.
The bleed line must be the same size as the
inlet piping, or larger. If piping is used for the
bleed line, avoid the use of elbows
whenever possible.
NOTE
It is recommended that each Air Release
Valve be fitted with an independent
bleeder line directed back to the wet well.
However, if multiple airs Release Valves
are installed in a system, the bleeder
lines may be directed to a common
manifold pipe. Contact your EBARA
distributor or the EBARA for information
about installation of an Automatic Air
Release Valve for your specific
application.
ALIGNMENT
The alignment of the pump and its power
source is critical for trouble-free mechanical
operation. In either a flexible coupling or
V-belt driven system, the driver and pump
must be mounted so that their shafts are
aligned with and parallel to each other. It is
imperative that alignment be checked after
the pump and piping are installed, and
before operation.
NOTE
Check Rotation, Section C, before
alignment of the pump.
When mounted at the EBARA factory, driver
and pump are aligned before shipment.
Misalignment will occur in transit and
handling. Pumps must be checking
alignment, tighten the foundation bolts. The
pump casing feet and/or pedestal feet, and
the driver mounting bolts should also be
tightly secured.
SUCTION
LINE
WET WELL OR SUMP
BLEED LINE 1"
(25,4MM) DIA. MIN.
(CUSTOMER
FURNISHED)
EXTEND 6"
(152,4MM)
BELOW LIQUID
LEVEL SURFACE
90 LONG
RADIUS
ELBOW
°
INSTALL AIR RELEASE VALVE
IN HORIZONTAL POSITION
CLEAN-OUT
COVER
DISCHARGE PIPE
DISCHARGE PIPE
SUPPORT
BRACKET
SELF-PRINING
CENTRIFUGAL
PUMP
DRAIN LINE
Figure 5 – Typical Automatic Air Release Valve Installation