... Material: 304, 316, 13%Cr, C.S+ENPSeat material: PTFE, R-PTFE,6.Reference standardvalve design: API6D, BS5351valve tested: API6D API598face to ... pipe line valves, valve parts, x-mas tree, manifold, BOP, tubing head, casing head, tee, spool, hanger, flange and OEM service ...