Specifies the requirements for size,rating,design, materials, marking and preparation for transport and storage of double flanged and wafer type butterfly valves with nominal pressure up to PN 40 and up to class 300, in the nominal size (DN) range of DN
SANS 1849:2008 history
2008SANS 1849:2008 Butterfly valves for general purposes
2001SANS 1849:2001 Butterfly valves for general purposes