US standard pressure balanced inverted oil seal plug valve: oil seal straight-through structure, the plug sealing surface material is alloy steel or stainless steel, suitable for nominal pressure 150Lb ~ 900Lb, the valve body material is carbon steel or stainless steel plug valve. Operating temperature -29 ~ 180 ℃ in petroleum, chemical, pharmaceutical, fertilizer, power industry and other conditions of the pipeline, cut off or connect the pipeline medium.

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