EBARA EFQU4 User Manual

Page 12

EBARA Fluid Handling

Figure 5. Typical Automatic Air Release

Valve Installation

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 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 Air
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 Fluid Handling 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

SUPPORT

BRACKET

SELF-PRINING

CENTRIFUGAL

PUMP

DRAIN LINE