AMTROL EX-15 15 Extrol Expansion Tank</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>2 gallon capacity (note: larger size is Amtrol EX-30)</li><li>NOT for potable water， for use with closed hydronic heating and cooling systems</li><li>Factory precharge: 12 psig Max. working pressure: 100 psig Max. operating temperature: 240 degrees F</li><li>Watertight reservoir for expanded water</li><li>Thick， heavy duty Butyl/EPDM diaphragm for long service life</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/31e169sWgmL.jpg' noproxy></br>