Non-flanged valves are typically used in small to medium diameter pipelines and low to medium pressure systems.Flanged valves are ideal for high-pressure, high-temperature, and hazardous media due to even load distribution and strong mechanical integrity.
Flanged Valves vs Non-Flanged Valves: Key Differences
|
Feature |
Flanged Valves |
Non-Flanged Valves |
|
Pressure rating |
High |
Low to medium |
|
Pipe size |
Medium to large (DN50+) |
Small to medium |
|
Sealing performance |
Excellent |
Moderate |
|
Installation |
Bolted, removable |
Fixed or semi-fixed |
|
Maintenance |
Easy |
Difficult |
|
Cost |
Higher |
Lower |
Typical Applications of Flanged Valves
Oil and gas pipelines
Petrochemical plants
Power generation facilities
Marine and offshore systems
Chemical processing plants
Typical Applications of Non-Flanged Valves
HVAC systems
Water supply and drainage
Utility and general industrial pipelines
Conclusion
Flanged valves are preferred for safety-critical and high-pressure applications, while non-flanged valves are ideal for compact and cost-controlled syste
