Amtrol 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

32 products