812XTF- All 316 stainless steel, threaded female connection. Metal to metal seating and teflon O-ring. 2"-6" available with socket weld connection add 10% to list (Model 812XSF). 1-1/2"-8" available with NITRILE (Buna-N) or VITON seal, add 10% to list (Model 812XRF/812XVF).