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Srpski језик 2021-05-28
8. Motýľ valvemožno zvoliť v regulácii s dvojitou polohou, hrdlovým kanálom, nízkou hlučnosťou, javom splyňovania, malým únikom do atmosféry a korozívnym médiom.
Pri použitíklapka under special conditions, such as throttling regulation, strict sealing requirement, severe wear, low temperature (cryogenic), etc., special klapka with three eccentricity or double eccentricity of specially designed metal sealing regulating device shall be used.