Watts ETX-30 4.7-Gallon Non-Potable Expansion Tank for Closed-Loop Systems</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>For use in closed-loop， non-potable water heating systems^4.7-gallon capacity^Durable steel tank^60 psi maximum working pressure</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31QfFxXqopL.jpg' noproxy></br>