DN: 50(NPS2)~800(NPS32) PN: 16(CLASS150LB)~260(CLASS1500LB) APPLICABLE SPECIFICATION Design Standard:API 6D/ANSI B16.34 Face To Face:ASME B16.10/ISO 5752/BS 558 Connection Standard:ASME B16.5/GB/T 9113.1/MSS SP-44/HG/T 20615 Buttweld:ANSI B16.25/GB/T 12224 Test&Inspection:API 6D/API 598/GB 13927 MAIN MATERIALS Body &Bonnet&Disc : Carbon Steel, Alloy Steel, Stainless Steel , Low Temperature Steel Seat Insert: VITON/PTFE/RPTFE/PEEK/NYLON/DEVLON/HARD FACING Gasket:+ GRAPHITE&STAINLESS STEEL FEATURE Structure: Pig Launching Valve+Pig Receiving Valve Sealing Type:Soft/Preliminary Metal Sealing and Secondary Soft Sealing/Metal-To-Metal End Connection: Welded/ Flanged/ Thread Driven Type: Manual/ Pneumatic/ Electric/ Gas Over Oil Application Field: Natural Gas/ Petroleum/ Offshore Platform/ Chemicals/ Sewage Treatment