General
Unless otherwise specified mechanical joint fittings shall be provided
in accordance with ANSI/AWWA C110/A21.10 or ANSI/AWWA C153/A21.53 where
applicable.
Table 2.1
| Size | Working Pressure | Material | Standard |
| 3" - 12" | 250 psi | CI | AWWA C110 |
| 350 psi | DI | AWWA C110 | |
| 350 psi | DI | AWWA C153 | |
| 14" - 16" | 150 psi | CI | AWWA C110 |
| 250 psi | CI | AWWA C110 | |
| 350 psi | DI | AWWA C110 | |
| 350 psi | DI | AWWA C153 | |
| 18" - 24" | 150 psi | CI | AWWA C110 |
| 250 psi | DI | AWWA C110 | |
| 350 psi | DI | AWWA C110 | |
| 30" - 48" | 150 psi | CI | AWWA C110 |
| 250 psi | DI | AWWA C110 | |
| 350 psi | DI | AWWA C110 |
Special Mechanical Joint Fittings
Cast fittings not covered by the AWWA C110 or AWWA C153 standards
shall be produced in accordance with the manufacturers' standard.
However, where applicable and practical, wall thickness and bell end
dimensions shall be in accordance with AWWA C110 or AWWA C153. Some
common fittings in the category are:
- MJ Laterals
- MJ Eccentric Reducers
- MJ x Flange Bends
- MJ Tees With Flange Branch
- MJ Swivel Hydrant Tees
- MJ Swivel Hydrant 90° Bends
- MJ Swivel Hydrant Coupling
Dimensions are normally interpolated from AWWA C110 (ANSI A21.10),
AWWA C153 (ANSI 21.53), and ANSI B16.1 where applicable and/or
practical. Cast fittings not covered by an existing standard are
normally produced in accordance with the intent of the above standards.
Caution: The manufacturer should be consulted for
actual dimensional and utilization details, whenever in doubt.
Dimensional differences may exist between different producers.
