im about to pick up a 15 gal full drain inductor tank from plasticmart.com. i'm going to use a 1 1/2 inch SS ball valve for the bottom valve, and would like to put a racking valve on the side. is this what i would use for the bulkhead? i assume that it has female threads and a 1 inch ballvalve would thread on but i cant tell. http://www.plastic-mart.com/class.php?item=1043