5
TESTING FOR WATER CELL LEAKAGE
1.
Disconnect power to pump.
2. Drain water from tank water cell by opening faucet closest
to tank.
3. Remove valve cap and release all pressure by depressing
valve core. When air stops coming from valve, remove
valve core to release remaining pressure.
4. Disconnect piping from elbow on tank cover flange.
5. Carefully turn tank upside down or lay on its side.
Retained water in tank may cause sudden
weight shift when lowering. Support tank so it cannot fall
when being lowered or inverted.
6. If water cell leaks, water will run out of valve. If so,
replace water cell.
7. If replacing water cell, be sure air and water
pressures are relieved before removing cover flange. When
reassembling cover flange, do
not tighten nuts or mounting studs more than 85 in-lbs.
(9.6 Nm).
NOTICE: When using metal pipe with plastic fittings use
only Teflon tape or Plasto-Joint Stik
1
on male threads.
NOTICE:
Most standard tanks have separate inlet and outlet
ports. Pre-charge tanks have one port serving both functions.
When replacing standard tank with a pre-charge tank, run pipe
from pump into a tee as shown. 2nd leg of tee goes to tank
elbow; 3rd leg goes to existing service.
To service
Pressure
Relief
V
alve
Pressure
Gauge
Pressure
Switch
From Well
Figure 5: Typical installation with vertical pre-charge tank and
submersible well pumps
* Length overall; this model is a horizontal tank.
Product Information – Pre-Charged Tanks
Maximum
Equivalent
Tank
Tank
Tank
Catalog
Capacity
to Standard
Diameter
Height
Discharge
Number
US Gals (L)
Tank US Gals (L)
(mm)
(mm)
Tapping
RPT7
6 (23)
15 (57)
12" (305)
16-1/2" (419)
3/4"
RPT7H
6 (23)
15 (57)
12" (305)
*16-1/2" (419)
3/4"
RPT20
19 (72)
42 (159)
16" (406)
30-1/8" (765)
1"
RPT20H
19 (72)
42 (159)
16" (406)
*24-5/8" (625)
1"
RPT36
35 (132)
82 (310)
20" (508)
36-1/4" (921)
1"
RPT52
50 (189)
120 (454)
24" (610)
34-3/4" (883)
1-1/4"
RPT86
85 (322)
220 (833)
24" (610)
54" (1,372)
1-1/4"
RPT119
119 (450)
320 (1,211)
24" (610)
68" (1,727)
1-1/4"
Drawdown - Gals (L)
Catalog
20-40 PSI
30-50 PSI
40-60 PSI
Number
(138-276kPa)
(207-345kPa)
(276-414kPa)
RPT7
2.2 (8.3)
1.8 (6.8)
1.6 (6.1)
RPT7H
2.2 (8.3)
1.8 (6.8)
1.6 (6.1)
RPT20
6.9 (26.1)
5.8 (22.0)
5.0 (18.9)
RPT20H
6.9 (26.1)
5.8 (22.0)
5.0 (18.9)
RPT36
12.7 (48.1)
10.7 (40.5)
9.3 (35.2)
RPT52
18.3 (69.3)
15.5 (58.7)
13.4 (50.7)
RPT86
30.0 (113.6)
26.0 (98.4)
22.0 (83.3)
RPT119
41.3 (156.3)
35.4 (134.0)
31.0 (117.3)
