Flo Fab 880RI Series, Руководство по эксплуатации, обслуживанию и установке, Страница: 4 / 41

SINCE 1981
3
Larger FLO FAB Vertical In Line pumps and Split Coupled pumps
have supporting Floor plate under the cosing. These pumps are
to be floor mounted but other wise piped-up the same way os shown. Although Vertical In line
pumps ore vibration free, it is recommended for floor mounted pumping units to provide isolation
between pedestal block and foundation structvre and flexible members in pipes adjacent to pump.
Typically, the natural rubber pad would hove a hardness in the range of 50 duro metres, a thickness of
0.375 inches and up, depending on the loading and site conditions, and be designed for a maximum
detection of 8 mm. This arrangement has been used, successfully, for many years on all types
of flooring systems. The recom mended arrangement diminishes noise transmission and provides
adequate vibration isolation in the horizontal and vertical planes.
If you are using the MFV valves as a balancing valve, you must hove these installed 10 times the
pipe size diameter to obtain any type of accuracy. IF these are only to be used as a throttling,
check, and shut off valve, then 5 times the pipe diameter after the pump discharge is accep -
table. If the system balancing at less than 50% stem rise and this is the primary balance valve,
ASHREA Standard 90.1 and Flo Fob recommend trimming the impeller to the necessary system
design flow. This will reduce electrical energy consumption and comply with the Notional Ener -
gy Building Code Standard. To avoid noise problems ond possible damage to the valve I do not
exceed 25 feet of pressure drop across the MFV valve.
FLOOR MOUNTED TYPE VERTICAL IN LINE PUMPS
When Installing MFV Valve
I.O.M - 880RI SERIES
IOM 880RI.indd 4 2017-11-14 13:03:59