Product Description
Armstrong AX-20V Pre-Charged ASME Expansion Tank – 11.0 gal (41.6 L)
The Armstrong AX-20V is a pre-charged ASME diaphragm expansion tank for closed hydronic heating and cooling systems. It can be installed vertically on its ring base or horizontally with optional saddles, and includes a gauge and bladder integrity system. Tank volume is 11.0 gal (41.6 L) with an acceptance volume of 8.8 gal (33.3 L), rated for a maximum working pressure of 150 psi (1034 kPa).
| Model | AX-20V |
| SKU | AX-20V |
| Tank volume | 11.0 gal (41.6 L) |
| Acceptance volume | 8.8 gal (33.3 L) |
| System connection | 0.75" (19 mm) NPT |
| Shipping weight with saddles | 54 lb (26.0 kg) |
| Maximum working pressure | 150 psi (1034 kPa) |
| Working temperature | -20°F to 240°F (-29°C to 115.5°C) |
| Factory pre-charge | 40 psi (276 kPa) standard, field adjustable |
| Shipping weight | 52 lb (23.0 kg) |
Design & Submittals
Materials of construction
- Shell: Steel
- Diaphragm: Heavy duty butyl
- Charging valve: 0.302"-32NC (standard tire valve)
Dimensions – inches (mm)
| A | B | D | F | G | H |
|---|---|---|---|---|---|
| 12.00 (305) |
25.00 (635) |
— | 21.13 (537) |
10.00 (254) |
8.00 (203) |
A = diameter. B = height. D = ring base diameter. F, G and H = saddle dimensions for horizontal installation. Dimensions are for reference only; certified dimensions available on request.
Notes
- Not for domestic potable water systems.
- Designed and constructed per ASME Section VIII, Division 1.
- Can be mounted vertically or horizontally; saddles available for horizontal mounting.
- California code sight-glass and mounting clips available on request.
Documents
Warranty
Covered by the Armstrong Fluid Technology manufacturer's warranty.
- Armstrong Terms of Sale & Warranty – Canada (PDF)
- Conditions de vente et garantie Armstrong – Canada, français (PDF)
Installation, Maintenance, Parts Kits & Manuals
Replacement parts and expansion tank sizing help – call (416) 236-2338 or email sales@bramhambros.com.
