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मराठी
Srpski језик 2021-05-28
8. Féileacán valveis féidir iad a roghnú i rialáil suímh dhúbailte, cainéal necking, torann íseal, feiniméan gásúcháin, méid beag sceitheadh chuig an atmaisféar agus meán creimneach.
Agus tú ag úsáidcomhla féileacán under special conditions, such as throttling regulation, strict sealing requirement, severe wear, low temperature (cryogenic), etc., special comhla féileacán with three eccentricity or double eccentricity of specially designed metal sealing regulating device shall be used.