2016GOST 21485-2016 Flushing cisterns with fittings. General specifications
1994GOST 21485-1994 Flushing tanks with accessories. General specifications
1976GOST 21485.3-1976 Flushing tanks with accessories. Brass float valve, closed with pressure. Design and principal dimensions
GOST 21485.3-1976 Flushing tanks with accessories. Brass float valve, closed with pressure. Design and principal dimensions was changed to GOST 21485-1994 Flushing tanks with accessories. General specifications.