An inner product features threaded ball valve and welded connections into monolithic (one-piece), two-stage and three-stage. Body cast used in Taiwan to introduce advanced technology, reasonable structure, beautiful shape. Seat with elastic sealing structure, reliable sealing, open and close easily. Valve stem seals downloading inverted structure, abnormal pressure when the valve chamber, the stem will not be out. Two, three-piece ball valve connected to form another butt (BW) socket welding (SW), and are available with international standard ISO stent platform and locking device. Switch can be set to 90 ° positioning mechanism, based on the need to lock to prevent misuse, driving modes: manual, electric, pneumatic two main connection size and weight SIZE 1/4 "3/8" 1/2 "3/4" 1 "1-1 / 4" 1-1 / 2 "2" 2-1 / 2 "3" 4 "D 11.6 12.7 15 20 25 32 38 50 65 80 100 L 68 68 72 82 90 112 120 145 185 210 268 H 100 100 130 130 165 165 190 190 250 250 280 E 100 100 130 130 165 165 190 190 250 250 280 three main parts and materials No. NO. Part Name Material Stainless steel 1 Body CF8M stainless steel ring poly four WCB 2 fluoride PTFE Teflon PTFE 3 bonnet CF8M stainless steel SS316 stainless steel sphere WCB 4 SS304 5 stem SS316 stainless steel SS316 6 nut washer stainless steel SS304 FCD45 7 SS304 FCD45 8 9 plastic handle plastic handle sets of stainless steel SS304 stainless steel SS304 10 stem nut washer stainless steel SS304 B7 11 SS304 stainless steel SS304 12 gland packing nut stainless steel SS304 FCD45 13 Teflon PTFE Teflon PTFE 14 Thrust washer Teflon PTFE Teflon PTFE 15 poly packing tetrafluoroethylene PTFE Teflon PTFE 16 SS304 stainless steel bolts