Liberty Pumps ProVore 380 - Manual (Page 4)

©Copyright 2013 Liberty Pumps Inc. All rights reserved 4
P380 SYSTEM
P680 SYSTEM
A.
Discharge: Using an adapter, connect the discharge pipe to the
threaded 2” port provided on the cover. IMPORTANT: NOTE:
This ProVore ® system is supplied with a 2” discharge outlet. Do
not increase the pipe size above 2” as adequate flow rates
may not be achieved for proper operation. Discharge sizes
may be reduced to 1-1/2” or 1-1/4”. Contact Liberty Pumps if
you have questions regarding proper pipe sizes and flow rates.
Install the remaining discharge line. A union should be installed
just above the cover to facilitate pump removal if necessary. 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. The remainder of the
discharge line should be as short as possible with a minimum
number of turns, to minimize friction head loss. Contact Liberty
Pumps or other qualified person if there are questions regarding
proper pipe size and flow rates.
B. Vent: A threaded 2” or 3” connection is provided on top of the
cover on a P380 SYSTEM or a 2” or 3” slip type Uni-Seal on a
P680 SYSTEM; the vent must be piped to the existing building
vent, or extended outside on its own standpipe. The vent size
should be in accordance with applicable codes, but not less
than the discharge size.
3. Installation and Connections