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