This Standard specifies requirements for flanged ductile cast iron spring hydrant valves with resilient seat for waterworks purposes. This Standard is applicable to Class 16 valves of nominal size DN 80 with either DN 80 or DN 100 flange with a maximum working temperature of 60°C. The valve is intended for use with potable water and is operated by means of the attachment of a standpipe.The life of the valve is intended to be a minimum of 50 years, and the design criteria should be based on this requirement.

Means for demonstrating compliance with this Standard are given in Appendix A.