| Capacity | : | 4.4 gal |
| Color | : | Tan |
| Connection Size | : | 3/4 in |
| Connection Type | : | MNPT |
| Diameter | : | 11 in |
| Dimensions | : | 15 in H |
| Finish | : | High Gloss |
| Material | : | Steel |
| Pressure Rating | : | 150 psig |
| Series | : | ST-12 Series |
| Temperature Rating | : | 200 deg F |
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®, patent pending anti-microbial liner, Patented InSight® service indicator cap and 50 psig recharge. When your water heater is on the line, we deliver.
AMTROL® Thermal Expansion Tank, ST-12 Series, 4.4 gal Capacity, 11 in Diameter, 3/4 in Connection, MNPT Connection, Steel, Finish: High Gloss, Tan, 150 psig, 200 deg F, 15 in H
- Antimicrobial liner neutralizes bacteria on contact
- Turbulator water diffuser
- Deep drawn steel domes for 2X the strength of other tanks
- Thickest diaphragm for extra long life
- Hoop and groove design for added reliability
- Accepts expanded water as system temperature rises and returns hot water to system when demand occurs
- Multiple units can be installed to accommodate larger systems
- Stainless steel system connection
- Heavy-duty butyl NSF/ANSI 61 diaphragm
- Antimicrobial liner protection
- Projection welded air valve
- InSight indicator cap
- 0.73 maximum accept factor
- Non-ASME tank
- Made in USA