国产国产午夜福利视_好吊妞在线_欧美国产一二区_a在线亚洲男人的天堂在线_久久人做人爽一区二区三区小说_免费看av在线

Signal butterfly valve is suitable for petroleum, chemical industry, food, medicine, papermaking, water supply and drainage, smelting, energy and other systems pipeline, can be used in a variety of corrosive, non-corrosive gas, liquid, semi-fluid and solid powder pipeline and container as regulation and closure equipment.Especially widely used in high-rise building fire systems and other pipeline systems that need to show the status of the valve on and off.

Product model: XD371X-16
Nominal diameter: DN40-DN1000
Material of valve body: ductile iron, 304, 316
Connection: clamping, flanged, lug clamping
Pressure classes: PN1.0mpa, PN1.6mpa
Seat sealing: EPDM: -30℃ ~ 120℃ NBR: -30℃ ~ 80℃ PTFE: -30℃ ~ 140℃ VITON: -30℃ ~ 150℃
Valve plate quality: ductile iron nickel plating, nylon coating, aluminum bronze, 304, 316, 316L, 1.4529, 2507
Stem material: stainless steel 410, 304
Suitable medium: water, liquid, gas, oil, powder, steam, caustic medium.