Results of research of the coeffcients of local resistance in not galvanized and galvanized knees and cast iron three-way-pipes were introduced in the article. Research, were carried out on the measuring stand built in the laboratory. Measurements were made for fttings about the angle of 90° inclination, produced by two producers, cast iron fttings. Research of the coeffcients of local resistance were carried out in beloveds randomly, three knees and three three-way-pipes. Determined coeffcients of local resistance of research, they compared with coeffcients of local resistance determined according to the applying PN-76-M-34034 norm.

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