DN:25(NPS1/2)~500(NPS20) PN:20(CLASS150LB)~420(CLASS2500LB) APPLICABLE SPECIFICATION Design Standard:API 6D/BSS SP-72/GB/T 12237/ JB/T 7745 Face To Face:ASME B16.10/BS 558 Connection Standard:ASME B16.5/MSS SP-44/GB/T 9113.1 Test&Inspection:API 598/GB/T 13927/JB/T 9092 MAIN MATERIALS Body &Bonnet&Disc : Carbon Steel,/ Alloy Steel/Stainless Steel/Low Temperature Steel Seat Insert: VITON/PTFE/RPTFE/PEEK/NYLON/DEVLON/HARD FACING FEATURE Sealing Type:Soft/Preliminary Metal Sealing and Secondary Soft Sealing/Metal-To-Metal Stem: Rising Stem/ Non-rising Stem Ball: Floating Ball/ Trunnion Mounted Ball Body: Top Entry End Connection: Welded/ Flanged/ Thread Driven Type:Manual/ Pneumatic/ Electric/Gas Over Oil Application Field: Natural Gas/Petroleum/Petrochemicals/Metallurgy// Mining