Threaded ball valves and welded ball valves applies to PN1.0 ~ 4.0MPa, working temperature -29 ~ 180 ℃ ( ring of reinforced PTFE ) or -29 ~ 300 ℃ ( ring for the position polystyrene ) various pipeline, cut off or connected piping media. choice of different materials, can be separately applied to water, steam, oil, nitric acid, acetic acid and other media.

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