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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
Catalog
Number
RPT7
RPT7H
RPT20
RPT20H
RPT36
RPT52
RPT86
RPT119
* Length overall; this model is a horizontal tank.
1
on male threads.
Product Information – Pre-Charged Tanks
Catalog
20-40 PSI
Number
(138-276kPa)
RPT7
2.2 (8.3)
RPT7H
2.2 (8.3)
RPT20
6.9 (26.1)
RPT20H
6.9 (26.1)
RPT36
12.7 (48.1)
RPT52
18.3 (69.3)
RPT86
30.0 (113.6)
RPT119
41.3 (156.3)
Maximum
Equivalent
Capacity
to Standard
US Gals (L)
Tank US Gals (L)
6 (23)
15 (57)
6 (23)
15 (57)
19 (72)
42 (159)
19 (72)
42 (159)
35 (132)
82 (310)
50 (189)
120 (454)
85 (322)
220 (833)
119 (450)
320 (1,211)
Pressure
Pressure
Gauge
Switch
From Well
Figure 5: Typical installation with vertical pre-charge tank and
submersible well pumps
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.
Drawdown - Gals (L)
30-50 PSI
40-60 PSI
(207-345kPa)
(276-414kPa)
1.8 (6.8)
1.6 (6.1)
1.8 (6.8)
1.6 (6.1)
5.8 (22.0)
5.0 (18.9)
5.8 (22.0)
5.0 (18.9)
10.7 (40.5)
9.3 (35.2)
15.5 (58.7)
13.4 (50.7)
26.0 (98.4)
22.0 (83.3)
35.4 (134.0)
31.0 (117.3)
Tank
Tank
Diameter
Height
(mm)
(mm)
12" (305)
16-1/2" (419)
12" (305)
*16-1/2" (419)
16" (406)
30-1/8" (765)
16" (406)
*24-5/8" (625)
20" (508)
36-1/4" (921)
24" (610)
34-3/4" (883)
24" (610)
54" (1,372)
24" (610)
68" (1,727)
5
To service
Pressure
Relief Valve
Tank
Discharge
Tapping
3/4"
3/4"
1"
1"
1"
1-1/4"
1-1/4"
1-1/4"
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