Installation And Connections - Liberty Pumps Pro Serie Manual De Instalación

3. Installation and Connections

A. Discharge: Using an adapter, connect the discharge pipe to the
threaded 2" or 3" port provided on the cover (or the 2" PVC nipple used
on side discharge models).
discharge pipe size below that which is provided on the pump.
Sewage pumps should not be smaller than 2". In some applications, it
may be necessary to increase the pipe size to reduce friction losses.
Contact Liberty Pumps if you have questions regarding proper pipe sizes
and flow rates.
Side Discharge P380
Vent: On vertical discharge models, a threaded 2" or 3" connection is provided on top of the cover which must be piped to the
B.
existing building vent, or extended outside on its own standpipe. On both side and vertical discharge systems, the vent size should
be in accordance with applicable codes, but not less than the discharge size.
Note: Pro-Series systems shipped with steel pipe option have a rubber grommet seal on the discharge instead of female NPT
connections.
IMPORTANT: Do not reduce the
This is a recommended vertical discharge installation only. Variations may apply.
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Vertical Discharge P380
Install the remaining discharge line. In vertical discharge
applications, a union should be installed just above the cover to
facilitate pump removal if necessary (side discharge applications
are equipped with an in-basin union). In both vertical and side
discharge models, a check valve is recommended after the union
to prevent the backflow of liquid after each pumping cycle. A gate
or ball valve should follow the check valve to allow periodic
cleaning of the check valve or removal of the pump.
remainder of the discharge line should be as short as possible
with a minimum number of turns, to minimize friction head loss.
Do not restrict the discharge below 2" in sewage applications.
Larger pipe sizes may be required to eliminate friction head loss
over long runs. Contact Liberty Pumps or other qualified person if
there are questions regarding proper pipe size and flow rates.
Typical Installation
The
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