BackStop® 10-Gallon Thermal Expansion Tank (Model: 12-A110)
Product Overview
The BackStop® A Series (Non-ASME) thermal expansion tanks are fixed-diaphragm, pre-charged devices designed to protect potable water systems. They safely absorb expansion forces and control the excessive pressure generated inside water heaters.
By utilizing a sealed, compressible air cushion space to temporarily hold the expanded water volume, these tanks prevent the damaging effects of thermal expansion and system waterlogging. Water is entirely contained within a heavy-duty diaphragm paired with a polypropylene liner, preventing tank corrosion.
Technical Specifications
The following specifications apply strictly to Model 12-A110:
| Parameter |
Specification |
| Model Number |
12-A110
|
| Total Tank Volume |
10 Gallons
|
| Height |
20"
|
| Diameter |
11-1/2"
|
| System Connection |
3/4" Stainless Steel
|
| Product Weight |
13.5 lbs.
|
Materials & Operating Limitations
Materials of Construction
-
Shell: Carbon Steel
-
System Connection: 304 Stainless Steel
-
Tank Coating: Triple Layer Electrostatic Almond Paint
-
Diaphragm: Heavy-Duty Butyl Rubber
-
Liner Material: FDA-Grade Polypropylene
Operating Parameters
-
Factory Pre-set Pressure: 35 PSI
-
Maximum Design Pressure: 150 PSI
-
Maximum Design Temperature: 200F
-
Certifications: IAPMO Certified / UPC
Installation Guidelines
-
Placement: The tank must be installed directly on the cold water line feeding the water heater.
-
Location Selection: Choose an installation area where potential leakage will not cause property damage and where access to ideal water drainage is available.
