MACH 1 Plug Valve ASME 600
The next generation of plug valve from Durco.
A pair of PFA encapsulated taper seat inserts replaces the PTFE sleeve used in the G4 series. Many unique features allow the valve to perform to a higher level than comparable plug valves.
- Lower turning torque – Reduced actuation costs
- High working temperature performance up to 274° C
- Easy seat replacement with minimal tools
- ISO 5211 actuator mounting pad
Available in a wide range of alloys to suit the process from carbon steel up to Zirconium / Hastelloy etc. As with all other Durco plug valves, the plug and be reseated whilst the valve remains inline. A live loaded reverse lip PFA diaphragm provides secondary stem sealing to keep emissions to a minimum.
The Mach 1 is available in sizes 1”NB up to 6”NB in class 150, class 300 and class 600 (derated) designs.
Installation, Maintenance and General Guidance PDF
To Suit ASME 600 Flanged Piping Systems
| To suit pipework NB | Face – Face A | CL to end of wrench B | CL to top of wrench C |
|---|---|---|---|
| Inches | Inches | Inches | Inches |
| 1″ | 8.5 | 7.0 | 4.6 |
| 1.1/2″ | 9.5 | 9.0 | 5.0 |
| 2″ | 11.5 | 12.0 | 6.2 |
| 3″ | 14.0 | 20.0 | 6.7 |
| 4″ | 17.0 | 29.9 | 9.3 |
| 6″ | 22.0 | 46.0 | 10.6 |
Mach 1 Options:
• Fire Sealed – To API 607 minimal environmental leakage
• Marathon design for High Cycle applications
• V-Ported plugs in various trim options for precise flow control
• Connections: Flanged, socket / butt weld and threaded end

















































