Most water systems nowadays require backflow prevention. However, when the backflow protection seals off the system, the relief valve can be discharged on every heating cycle. With A.O. Smith TW-12-1 Expansion Tank, there will be no wasted water as it helps protect your plumbing system to have a smooth operating system. The expansion tank can extend the life of your water heater by internally lining with a polypropylene liner for corrosion protection and it adjusts the air pre-pressure to the actual water pressure with an air valve.

Features

• Stainless steel acceptance fitting
• Polypropylene liner to eliminate internal corrosion
• External baked epoxy-polyester coating
• Two-piece design
• Butyl rubber diaphragm to separate air and water
• Deep drawn steel

Specifications

• Max water pressure: 150 PSI
• Max temperature: 200 ̊F
• Tank volume: 4.8 Gal
• Max acceptance volume: 2.19 PSI
• Conn. size: ¾ NPT
• Dimensions (D x H): 10.6” x 13.7”
• Weight: 8.2 lbs
• Heater size: up to 100 gal