MSS - Manufacturers Standardization Society of the Valve and Fittings Industry.
Scope
"This Standard Practice covers the performance and design requirements of gray-iron or ductile-iron tapping sleeves used in water and sewerage systems. Tapping sleeves are used with tapping valves to permit connection to an existing main without interruption of service. Tapping valve requirements are not covered in this standard. This standard covers the performance and design requirements of tapping sleeves of nominal pipe sizes from 4"" to 48"" NPS with flanged outlet branch connections 2"" through 42"" NPS. Tapping saddles and fabricated tapping sleeves are not covered by this standard."