Approved Valve and Riser Equipment Butterfly Valve – Threaded OS&Y Gate Valve 2.5 250 psi W.P Butterfly Valve Wafer with Tamper Switch Breeching Inlet – 4 Oblique Landing Valve 2.5 inch Butterfly Valve – Grooved Type with Thread OS&Y Gate Valve 2.5 inch 175 psi W.P Hand Held Branch Pipe OS&Y Gate Valve 2.5 inch — 200 psi W.P Breeching Inlet – 6 inch 4 Way KLIK DISINI BROSUR VALVES AND RISER EQUIPMENT