Product Information Series 3903 3-Piece Full Port Ball Valves 1000 W.O.G. Blowout Proof Stem Locking Device Threaded Socket Weld Click Here for a downloadable and/or printable version of this page. Parts & Identification Parts & Identification back to top Sharpe® Valves Chicago - Headquarters (877) 774-2773 / (708) 562-9221 / Fax (708) 562-0890 E-mail info@sharpevalves.com