Amtrol ST-12 (Therm-X-Trol) Water Heater Expansion Tank, 4.4 Gallon, 3/4" NPTM Connection, 11 Inch Diameter, 15 Inch H
The Amtrol ST-12 (Therm-X-Trol) is a water heater expansion tank designed for use in domestic hot water heating systems. Here are the key details:
- Purpose: The primary purpose of an expansion tank is to accommodate the expanded fluid in closed-loop heating systems, refrigerating systems, and closed hydronic solar systems. It is specifically intended for non-potable water use.
- Function: The ST-12 controls pressure build-up while enhancing comfort levels and reducing energy costs. It acts as an overflow for excess water created by heated water, maintaining safe expansion pressure.
- Compatibility: Appropriately sized for expansion overflow, it works with domestic hot water systems that contain a backflow preventer, a check valve, or a pressure reducing valve.
- Tank Volume: The ST-12 has a tank volume of 4.4 gallons.
FEATURES
Patent Pending Antimicrobial Liner Neutralizes Bacteria on Contact.
Patented Turbulator® Water Circulation Device.
Patented InSight® Indicator Cap Tank Service Alert.
Highest Precharge – 50 PSIG.
Strongest Tank Design Featuring Deep Drawn Steel and Multi-Dome Construction.
Thickest Diaphragm – Heavy Duty Butyl.
Projection Welded Air Stem to Help Eliminate Leaks.
Stainless Steel System Connection.
In-Line Model 4.4 Gallon sizes.
- Tech Specs:
- System Connection Size: 1/2 NPT
- Factory Pre-Charge: 50 PSIG
- Max. Working Pressure: 150 PSIG
- Max. Operating Temperature: 200°F
- Tank Diameter: 11 inches
- Tank Height: 15 inches
