A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Installation and Maintenance of Gate Valves in St. Paul
This article discusses the gate valves and control appurtenances used in St. Paul, Minnesota's distribution system. For several years, St. Paul has used the AWWA type of valve with the nonrising stem. The gates have iron bodies with double disk, bronze, mounted parallel seats, and open to the right. The only exception to the AWWA standard is the greater tensile strength (80,000 psi) required in the valve stem. In other words, St. Paul requires the same stem strength for valves less than 30 inches as AWWA requires for larger gates. The city's present policy is to use the vertical type of gate valve with a cast‐iron gate box for 16‐inch and smaller size valves; for gates 20 inches and larger, the horizontal type of valve with a bypass is used. For this type of installation, a precast concrete manhole is set around the gate mechanism, and a cast‐iron gate box is used for the bypass valve.
Installation and Maintenance of Gate Valves in St. Paul
This article discusses the gate valves and control appurtenances used in St. Paul, Minnesota's distribution system. For several years, St. Paul has used the AWWA type of valve with the nonrising stem. The gates have iron bodies with double disk, bronze, mounted parallel seats, and open to the right. The only exception to the AWWA standard is the greater tensile strength (80,000 psi) required in the valve stem. In other words, St. Paul requires the same stem strength for valves less than 30 inches as AWWA requires for larger gates. The city's present policy is to use the vertical type of gate valve with a cast‐iron gate box for 16‐inch and smaller size valves; for gates 20 inches and larger, the horizontal type of valve with a bypass is used. For this type of installation, a precast concrete manhole is set around the gate mechanism, and a cast‐iron gate box is used for the bypass valve.
Installation and Maintenance of Gate Valves in St. Paul
Hoher, Roy W. (author)
Journal ‐ American Water Works Association ; 52 ; 269-272
1960-02-01
4 pages
Article (Journal)
Electronic Resource
English
Distribution Systems , Gate Valves , Iron , Installation , AWWA , Minnesota
Installation and Maintenance of Gate Valves
| Wiley | 1949
Installation and Maintenance of Gate Valves
| Wiley | 1932
Installation and Maintenance of Subsea Isolation Valves
| Springer Verlag | 1991