AY McDonald 4423-072 2068S 2 Silent Ball/Check Combo</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Eliminates the typical hammering of a sump check valve after the pump cycles</li><li>Silent compression check valve/ball valve combo</li><li>All valves are pressure tested to ensure Leak-proof performance</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/31E7B6QN03L.jpg' noproxy></br>