BS 2879:1980

This standard BS 2879:1980 Specification for draining taps (screw-down pattern) is classified in these ICS categories:

• 91.140.60 Water supply systems
• 91.140.10 Central heating systems

This British Standard specifies requirements for copper alloy bodied taps used for draining hot and cold water installations and heating systems. It covers nominal sizes of 1/2 and 3/4 only for use with water:

1. up to 70 °C with occasional excursions up to 90 °C max. for period of 1 h (type 1);
2. up to a maximum of 120 °C (type 2).

Specifies ½ and ¾ nominal size copper alloy bodied taps for draining down hot and cold water installations and heating systems.