Amtrol AX-15V - 7.8-Gallon ASME-Rated Commercial Hydronic Expansion Tank, Extrol Series
Amtrol AX-15V - 7.8-Gallon ASME-Rated Commercial Hydronic Expansion Tank, Extrol Series
Couldn't load pickup availability
Ships factory-new in original packaging.
Not sure if a compatible flange, seal kit, or accessory exists for this item? Ask our team — we're happy to help you find the right part.
TIPS Contract Vendor
Officially awarded purchasing cooperative vendor.
Why Buy From Us
Every quote personally reviewed. Direct sourcing from top manufacturers.
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) |
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.