Watts 0212003 Expansion Tank 10 Gal 35 Gal Tank 16x45 in

Product Description

The WATTS 0212003 is a hydronic expansion tank designed to absorb pressure fluctuations in closed-loop heating and potable water systems. With a 10-gallon acceptance capacity housed in a 35-gallon carbon steel tank body, it handles thermal expansion in residential and light commercial applications. The tank measures 16 inches in diameter and 45 inches in height, with a 1/4-inch port connection. The exterior features a primer coat finish for corrosion resistance during storage and installation. Licensed plumbers and HVAC technicians are the primary installers of this equipment.

This expansion tank is suited for closed hydronic heating systems, potable water supply systems with backflow preventers, and similar pressurized plumbing circuits where thermal expansion must be controlled. Its 35-gallon total tank volume and 10-gallon acceptance capacity make it appropriate for larger residential or light commercial system volumes where a smaller tank would be undersized for the loop.

Key Features

• 10-gallon acceptance capacity for thermal expansion control in closed-loop systems
• 35-gallon total tank volume for larger system applications
• Carbon steel construction with primer coat finish
• 16-inch diameter by 45-inch height form factor for floor-mount or mechanical-room installation
• 1/4-inch port connection for system tie-in

Compatibility

Designed as an OEM-style replacement or new-installation expansion tank for closed hydronic heating and pressurized potable water systems requiring thermal expansion control.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off system pressure and depressurize the line before connecting or replacing the tank. Verify the tank pre-charge pressure matches system static fill pressure before final connection. The tank should be adequately supported given its weight and floor space requirements.