高清国产一区二区三区在线-国产在线精品一区二区夜色-亚洲人成77777在线播放网站-亚洲精品久久久久久中文-无码 人妻 在线 视频

Electric hard seat butterfly valve is composed of valve body, butterfly plate, sealing ring, transmission mechanism and other main components.Its structure adopts the principle of three-dimensional eccentric design, elastic sealing and hard and soft multi-layer sealing compatible processing technology, so that the butterfly valve in operation, reduce its torque force, to achieve the function of labor saving, energy saving.This ensures overall corrosion resistance.High temperature and attrition resistance reliability.

Product model: D943H
Nominal diameter: DN50~2000mm
Nominal pressure: PN0.6~ 2.5MPa
Material of valve body: WCB, 304, 316
Driving mode: electric, pneumatic, manual
Design standard: GB/T12238-1989
Flange connection size: GB/T9113.1-2000;GB/T9113.2-2000 GB/T9115.1-2000.GB/T9115.2-2000
Structure length: GB/T12221-1989
Pressure test: GB/T13927-1992;JB/T9092-1999