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Amtrol AX-15V Extrol Commercial ASME Hydronic Expansion Tank (7.8 Gallon)

Amtrol AX-15V Extrol Commercial ASME Hydronic Expansion Tank (7.8 Gallon)

Brand: Amtrol SKU: EXTROL-AX15

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Regular price $1,450.00 USD
Regular price Sale price $1,450.00 USD
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Manufacturer Amtrol (Extrol Commercial Series)
Model Number AX-15V / 117-401
Total Tank Volume 7.8 Gallons (30.3 Liters)
Max Acceptance Volume 2.4 Gallons (9.1 Liters)
Maximum Operating Pressure 125 PSIG (Standard Working Limit)
Max Operating Temp 240°F (115°C)
Factory Precharge 12 PSIG (Field Adjustable via Schrader Valve)
System Connection Size 1/2" Female NPT (Malleable Iron)
Dimensions 12" Diameter x 20" Height
Shipping Weight 39 lbs. (ASME Heavy Wall Construction)
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The Amtrol Extrol AX-15V is a commercial-grade, ASME-certified diaphragm expansion tank designed to control pressure fluctuations in closed, non-potable hydronic heating and chilled water systems.

Engineered for Commercial Reliability

  • ASME Rated: Built and certified to meet all ASME Section VIII, Division 1 code standards for commercial mechanical room compliance.
  • Heavy-Duty Construction: Features a high-strength shell made of ASME-approved steel, finished with a rugged red oxide primer coating.
  • Industry-Thickest Diaphragm: Utilizes a specialized, fixed ultra-thick Butyl/EPDM diaphragm securely clamped into the vessel walls to prevent air-to-water migration and system waterlogging.
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