... '' Class 150-class600Wenzhou ONO Valve CO.,Ltd is a professional manufacturer of valve.Our products include globe valves,check valves,safety valves,ball ... structure of flexible eyelet so that the disc can contact the sealing surface of valve body uniformly and reliably,achieving no leakge ... medium: water, oil, gas,vapor,steam etc.5) Body and disc material: WCB, CF3, CF8, CF3M, CF8M etc.6) Stem material ...