WATTS WATER TECHNOLOGIES GIDDS-1030402 Watts Potable Water Expansion Tank， Model #Plt-12， Stainless Steel Nipple， 4.5 Gallon， Lead Free - 1030402</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Butyl diaphragm</li><li>3/4-inch male connection</li><li>Pre-pressurized</li><li>Stainless steel inlet</li><li>Acceptance volume: Max 3.42 G at 150psi</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/41qb7-5JvyL.jpg' noproxy></br>