DN:15(NPS1/2) ~400(NPS16) PN:16(CLASS 150Lb)~40(CLASS 300) APLICABLE SPECIFICATION Design Standard: API 6D/API 608/ASME B16.34/GB/T 12237 Inspection&Test: API 6D, API 598, GB, DIN etc.. Face To Face: API 6D, ASME B16.10, DIN Flange Ends:ASME B16.5/ASME B16.47/GB/T 9113.1/HG/T 20615-2009 MAIN MATERIALS Body: Carbon Steel/ Alloy Steel/ Stainless Steel/ Low Temperature Steel Ball/Seat Ring: Carbon Steel /Alloy Steel/ Stainless Steel/ Low Temperature Steel, Chrome (Nickel) Plated Seat: PTFE, RPTFE, VITON,PEEK, NYLON etc. Stem: Stainless Steel, Chrome (Nickel) Plated O Ring:NBR, BUNA-N, VITON etc. Sealing Type:Soft/Preliminary Metal Sealing and Secondary Soft Sealing/Metal-To-Metal Trim:Forgings Seat Insert:VITON/PTFE/RPTFE/PEEK/NYLON/DEVLON/HARD FACING STRUCTURAL FEATURES Body:Fully Welded Body(Avoid Leakage) Stem:Extension (Easy to be operated above ground) Single Relief Valve/Double Relief Valve/No Relief Valve (When maintaining, discharge residual fluid in the pipe) Bore Type:Full Bore/Reduced Bore Face To Face:ASME B16.10/GB/T 12221/BS 558 Driven Type: Manual/ Electric/ Pneumatic/ Gas Over Oil/ Electro-Hydraulic Fire Safe/Anti-Static/Blow-Out Proof Stem Application Field:City Gas