The MaxFlo 4 is a high-performance eccentric rotary plug control valve. The flow path is unobstructed by the shaft, allowing higher capacity for a given valve size. This noncrossover shaft design also eliminates shaft damage from erosive process fluids. The shaft is designed per ASME B16.34 Section 6.5 to prevent the stem from being removed while the valve is under pressure for increased safety.
Additional information
| Valve Size | 1" to 12" |
|---|---|
| Pressure Class Standard | ASME B16.34 |
| Pressure Class Range | Class 150, 300, 600 |
| Body | One-Piece |
| End Connections | Wafer, Integral Flange |
| Face-to-Face Standard | ANSI ISA S75.08.01 (Globe), S75.08.02 (Short) |
| Bonnet | Standard Anti-Blowout |
| Packing | Standard, Twin Seal, Vacuum Seal, Fugitive Emissions, Live-Loaded, Fire-Safe |
| Configuration | Double-Offset Eccentric |
| Trim | Rotary Full & Reduced Area Plug |
| Trim Characteristics | Linear |
| Seating | Metal-to-Metal & Soft |
| Shut-Off Classification | ANSI FCI 70-2 Class IV, V, VI |
Features & Benefits
- Unobstructed flow-path provides 70% greater flow capacity for a given valve size
- Shaft is designed to safety requirements of ASME B16.34 to prevent the stem from being removed while the valve is under pressure for increased safety
- Polygon connection between the shaft and plug provides precise control and substantially longer service life
- The MaxFlo 4 double-offset eccentric plug rotates into the seat at an angle that eliminates sliding over the seat surface
- Separate bonnet ensures positive anti-blowout, accommodates multiple packing options, and offers flexibility in material selection
- An economical flangeless configuration of the MaxFlo 4 is also available, matching the standard flanged body in length
- Heavy-duty rigid metal seat, with hardfaced or soft-seat options, provides tighter shutoff, and easier maintenance
- Precision NC machined plug and shaft significantly reduces maintenance costs by allowing replacement of only the necessary parts
Standards & Certifications
| Certifications | Canadian Registration Number (CRN) |
|---|---|
| Safety Integrity Level (SIL) 3 Capable | |
| Design Standards | ASME B16.5 – Pipe Flanges & Flanged Fittings |
| ASME B16.10 – Face to Face & End Dimenions of Valves | |
| ASME B16.34 – Valve Flanged, Threaded, and Welding End | |
| ASME SA Materials | |
| ASTM A Materials | |
| Quality | IS0 9001:2008 |
| ATEX QAN | |
| IECEX QAR |
