Installation
Air Valve
Protective
Cap
Air Valve
Figure 1: Air valve and protective cap.
Tank Precharge Settings for use with
PENTEK INTELLIDRIVE Variable
Frequency Drives
Set the pressure tank's pre-charge to 70% of the system
operating pressure. When using an external set point as
well as an internal set point, pre-charge the tank to 70%
of the lower set point of the two. Some applications may
require a different percentage when figuring the set point.
Refer to your PENTEK INTELLIDRIVE operator's manual
for additional information.
Product Information – Pre-Charged Tanks
Model Number
Maximum
Capacity
US Gals (L)
FP7105-08
2 (7.6)
FP7107
5 (18.9)
For parts or assistance, call Flotec Customer Service at 1-800-365-6832
Equivalent to
Drawdown - US .Gals (L)
Standard Tank
20-40 PSI
US Gals (L)
(138-276kPa)
6 (23)
0.7 (2.6)
15 (56.8)
1.8 (6.8)
Standard Tank Replacement
When replacing a standard tank in a water system with
a pre-charged tank, no bleeder orifices or Air Volume
Control (AVC) are required. When sizing a pre-charged
tank to replace a standard tank, the tanks should have
equivalent drawdowns.
Hazardous voltage and hazardous pressure .
Disconnect all power to pump and bleed all pressure
from system before working on pump, tank, or piping.
30-50 PSI
40-60 PSI
(207-345kPa)
(276-414kPa)
0.6 (2.3)
0.5 (1.9)
1.5 (5.7)
1.3 (4.9)
Tank Diameter
Tank Height
in . (mm)
in . (mm)
8-3/8" (213)
12-9/16" (319)
10.6" (269)
16.2" (411)
3
Tank Discharge
Tapping
3/4"
3/4"