2016GOST 21485-2016 Flushing cisterns with fittings. General specifications
1994GOST 21485-1994 Flushing tanks with accessories. General specifications
1976GOST 21485.0-1976 Flushing tanks with accessories. Technical requirements and test methods
GOST 21485.0-1976 Flushing tanks with accessories. Technical requirements and test methods was changed to GOST 21485-1994 Flushing tanks with accessories. General specifications.