DN: 25(NPS1)~1200(NPS48) PN: 16(CLASS150)~150(CLASS900) APPLICABLE SPECIFICATION Design Standard:API 600, API602, GB/T 12234 Test&Inspection: API 6D/API 598/GB/T 3927/ JB/T 9092 Face To Face: API 6D/ ASME B16.10 Connection Standard:ASME B16.5/MSS.SP44 Butt-Welded Ends: ASME B16.25 MAIN MATERIALS Body&Disc : Carbon Steel, Alloy Steel, Stainless Steel , Low Temperature Steel Seat Insert: VITON/PTFE/RPTFE/PEEK/NYLON/DEVLON/HARD FACING Gasket: Graphite&Stainless Steel Packing: Graphite FEATURE Type: Antisulphur Type/ Adjustment Type/ Auto Compensation Structure: Rising Stem Parallel Single Disc/ Rising Stem Parallel Single Disc End Connection: Buttwelded/ Flanged Sealing Type:Soft/Preliminary Metal Sealing and Secondary Soft Sealing/Metal-To-Metal Driven Type: Manual/ Pneumatic/ Electric/ Gas Over Oil Application Field: Natural Gas/ Petroleum/ Water