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