z0z○zo女人高潮类,蜜臀av无码久久久久久久,18禁黄网站禁片免费观看女女,后宫宫妃被各种sm调教

First, three-piece welded stainless steel ball valve product overview

Three-piece welded stainless steel ball valve for operating temperature -29 ~ 180 ℃ (PTFE ring for the enhanced) or -29 ~ 300 ℃ (ring for the para-polystyrene) of the various pipelines for truncation or Turn on the medium in the line. Selection of different materials, can be applied to water, steam, oil, nitric acid, acetic acid and other media.
 

Second, three-piece welded stainless steel ball valve product features

Three-piece welded stainless steel ball valve is divided into a whole (one type), two-stage and three-stage. Body casting using imported advanced technology in Taiwan, a reasonable structure, handsome in appearance. Seat with flexible sealing structure, reliable sealing, easy opening and closing. Stem with inverted seal down the structure, the valve chamber abnormal pressure, the stem will not be washed out. Two-piece, three-piece ball valve connections are available with butt fusion (BW) socket welding (SW) and are available with international standard ISO bracket platforms and locking devices. Can be set to 90 ° switch positioning mechanism, according to the need to lock to prevent misuse, drive mode: manual, electric, pneumatic.
 

Three, three-piece stainless steel ball valve welding the main components of the material

Four, three-piece welded stainless steel ball valve dimensions