Expansion Tank

Amtrol-Worthington ST-25V

Expansion Tank Therm-X-Trol Thermal 10.3 Gallon 150 Pounds per Square Inch Gauge 3/4" NPTF ST-25V Non-ASME for Closed Potable Water Systems to Control Pressure Build-up

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$435.36  / ea
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This item cannot ship to CA

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Amtrol invented the thermal expansion tank to absorb expanded water in closed, hot water systems and protect the water heater. Since the beginning, we've kept the pressure on our competitors with features they just can't match like our patented Turbulator, antimicrobial liner, patent-pending InSight service indicator cap and 50 psig precharge. When your water heater is on the line, we deliver.

  • Antimicrobial liner neutralizes bacteria on contact
  • Patented Turbulator water circulation device
  • InSight indicator cap tank service alert
  • Strongest tank design featuring deep drawn steel and multi-dome construction
  • Thickest diaphragm - heavy duty butyl
  • Projection welded air stem to help eliminate leaks
  • Exclusive ST-1 for tankless water heaters

BrandAmtrol-Worthington
Product TypeThermal
Tank Capacity10.3GAL
Pressure150PSIG
Inlet/Outlet Connection3/4IN NPTF
Part NumberST-25V
StandardNon-ASME
Precharge Pressure40PSIG
Temperature200DEG F
Diaphragm MaterialHeavy Duty Butyl
MaterialSteel
ApplicationClosed, Potable Water Systems to Control Pressure Build-up
Length15IN
Width15IN
Height19IN
Shipping Weight23.000 LBS
California ResidentsWARNING: Click here for Proposition 65 information.

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