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Therm-X-Trol
THERM-X-TROL®
ST Series
Thermal expansion occurs as domestic water is heated. Left unchecked,
the resulting pressure increase can cause relief valve discharge and
other potentially unsafe conditions. Therm-X-Trol® expansion tanks
absorb this expanded water, keeping water pressure at a safe level. Available in diaphragm, full acceptance, and partial acceptance bladder designs, all Therm-X-Trol tanks are made in the USA at our ISO 9001:2008 registered facilities. ASME tanks meet Section VIII, Division I Standards.
SPECIFICATIONS
ASME Diaphragm Series
|
Model
Number
|
Tank
Volume
(Gallons)
|
Maximum Acceptance
Volume
(Gallons)
|
Diameter
(Inches)
|
Height
(Inches)
|
System Connection
NPTF
(Inches)
|
Shipping
Weight
(lbs.)
|
| ST-5C
|
2.1
|
0.9
|
10
|
10
|
3/4
|
20
|
| ST-12C
|
6.4
|
3.2
|
12
|
12
|
3/4
|
34
|
| ST-20VC
|
8.0
|
3.2
|
12
|
19
|
3/4
|
41
|
| ST-30VC-150
|
14.0
|
9.0
|
16
|
19
|
3/4
|
59
|
| ST-30VC-175
|
14.0
|
9.0
|
16
|
19
|
3/4
|
64
|
| ST-42VC
|
18.0
|
11.0
|
16
|
24
|
3/4
|
71
|
| ST-60VC
|
25.0
|
11.0
|
16
|
32
|
3/4
|
85
|
| ST-70VC
|
34.0
|
11.0
|
16
|
45
|
3/4
|
99
|
| ST-80VC
|
53.0
|
35.0
|
24
|
37
|
1-1/4
|
224
|
| ST-180VC
|
77.0
|
35.0
|
24
|
49
|
1-1/4
|
285
|
SPECIFICATIONS
Non-ASME Diaphragm Series
|
Model
Number
|
Tank
Volume
(Gallons)
|
Maximum Acceptance
Volume
(Gallons)
|
Diameter
(Inches)
|
Height
(Inches)
|
System
Connection
(Inches)
|
Shipping
Weight
(lbs.)
|
| ST-12
|
4.4
|
3.2
|
11
|
15
|
3/4 NPTM
|
9
|
| ST-25V
|
10.3
|
10.3
|
15
|
19
|
3/4 NPTF
|
23
|
| ST-60V
|
34.0
|
34.0
|
22
|
30
|
1-1/4 NPTF
|
61
|
4.4 Gallon Volume - 150 PSI - Non-ASME
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10.3 Gallon Volume - 150 PSI - Non-ASME
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34.0 Gallon Volume - 150 PSI - Non-ASME
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2.1 Gallon Volume - 150 PSI - ASME
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6.4 Gallon Volume - 150 PSI - ASME
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8 Gallon Volume - 150 PSI - ASME
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14 Gallon Volume - 150 PSI - ASME
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18 Gallon Volume - 150 PSI - ASME
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25 Gallon Volume - 150 PSI - ASME
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34 Gallon Volume - 150 PSI - ASME
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53 Gallon Volume - 150 PSI - ASME
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77 Gallon Volume - 150 PSI - ASME
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