This standard applies to direct-acting pressure regulators with nominal bores DN 6-200 mm at nominal pressure PN not b
GOST 12678-1980 Referenced Document
GOST 11881-1976 Controllers acting without an independent energy source, SSI. General specifications
GOST 15150-1969 Machines, instruments and other industrial products. Modifications for different climatic regions. Categories, operating, storage and transportation conditions as to environment climatic aspects influence