国产淫语对白丨一级高清免费毛片丨a免费在线观看丨三级三级久久三级久久18丨2019精品国自产拍在线不卡丨四虎影库永久地址丨www国产成人免费观看视频丨日韩欧美中文丨影音先锋中文字幕无码丨人妻激情文学丨黄色免费观看网站丨免费观看性生交大片女神丨久久婷婷五月综合尤物色国产丨www.色天使丨亚洲精品色无码av试看丨欧美日韩久久婷婷丨精品视频在线看丨丰满蕾丝乳罩少妇呻吟91丨伊人色综合久久天天丨亚洲成人一区二区三区

ZJSJ High Pressure Differential - High Performance Angle Regulating Valve produced and sold by Baigang valve group with the top of the guide structure, equipped with multi-spring pneumatic actuator. The utility model has the advantages of compact structure, light weight, sensitive action, streamlined fluid channels, small pressure drop loss, large valve capacity, accurate flow characteristics and convenient disassembly and assembly. Widely used in precise control of gas, liquid and other media, process parameters such as pressure, flow, temperature, liquid level at a given value. Especially suitable for small amount of leakage before the valve pressure difference is not large after the high viscosity, containing suspended solids and particulate matter regulation, to avoid coking, clogging, easy self-cleaning and cleaning occasions. This series of products are room temperature type, regulation cut off, bellows sealed, high temperature, thermal insulation jacket and other series. Nominal product pressure rating PN10, 16,25,64,100; body diameter range DN20-DN200. Leakage grade Ⅳ or Ⅵ level. Applicable fluid temperature from -200 ℃ - + 560 ℃ range of a variety of grades, the flow characteristics of linear or equal percentage. A variety of specifications to choose from. This series of control valve structure of new, fully functional, full range.

Note: Normal temperature type: room temperature type operating temperature -20 - +200 ℃, leak level is Ⅳ level. 
High-temperature bonnet additional heat sink can be used for medium temperature -60- +450 ℃ occasions. 
Bellows sealed type to move up and down the stem to form a complete seal, blocking fluid leakage. 
Low-temperature type with extended valve cover and insulation board structure can be -196 ℃ cryogenic occasions.