This Is A Praher Top Mount Clamp On Valve Used . On The Baker 2 Filter. Used On The New Style Filter And Will Also Fit The . Older Style. (Older Style Used A Valve Which . Threaded Into An Adaptor. The Adaptor Actually . Clamped To The Tank. The New Style Valve Will . Replace Both The Adaptor And The Threaded Valve Clamp Flange Is 9" Diameter Valve Color Is Black "Model No Tm-12" Is On Label (Don'T Be Fooled, . The Same Number Is Used On Many Other Valves) "Tm 12 9Bh" Molded Into Bottom Of The Flange, This . Does Identify The Valve As Being This Valve Only