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