The internal thread pneumatic ball valve seat adopts elastic sealing structure, which is easy to open and close and reliable in sealing. The valve stem adopts a bottom-loading structure with an inverted seal, and the valve stem is not impacted when the valve cavity is abnormally boosted. The 90° switch positioning mechanism can be set and locked as needed to prevent misoperation. Pneumatic internal thread ball valve is suitable for various pipelines of PN1.0～4.0MPa, working temperature -29～180°C (sealing ring is reinforced polytetrafluoroethylene) or -29～300°C (sealing ring is para-polyphenylene) It is used to cut off or connect the medium in the pipeline. Different materials are used. The internal thread pneumatic ball valve can be applied to various media such as water, steam, oil, nitric acid, acetic acid, ammonia brine, neutralized water, etc. In pure pipelines such as food, beverage, medicine, and chemicals

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