AS/NZS 2638.2:2011

Specifies requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes.

This Standard specifies requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes, with a maximum operating temperature of 40°C. This Standard is applicable to the following versions: Valves of nominal sizes DN 80 to DN 750 with inside screw and non-rising spindle design, operated by a removable key, with or without a gearbox, for buried applications.Valves of nominal size DN 80 to DN 750 with inside screw and non-rising spindle design, operated by a handwheel, with or without a gearbox, for above-ground applications.Valves of nominal size DN 80 to DN 300 with outside screw and rising spindle design, operated by a handwheel, for above-ground applications where the position of the gate is required to be visible.Valves of nominal sizes DN 450 to DN 750 with an integral bypass arrangement.The design criteria of the valve and fasteners should be based on a minimum life expectancy of 50 years.Purchasing guidelines are given in Appendix B.

First published as AS 2638-1983.Revised and redesignated as Int 88006-1988.Int 88006-1988 withdrawn 1988.AS 2638-1983 revised 1988.Third edition 1991.AS 2638-1991 ervised and redesignated in part as AS 2638.2-1999.Second edition 2002.Third Edition 2006.AS 2638.2-2006 revised and redesignated as AS/NZS 2638.2:2011. Originated as AS 2638-1983. Third edition 1991. AS 2638-1991 revised and redesignated in part as AS 2638.2-1999. Third edition 2006. AS 2638.2-2006 revised and redesignated as AS/NZS 2638.2:2011. Reissued incorporating Amendment No. 1 (August 2017).