MaxFlo 4

MaxFlo 4

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.

Brand: Valtek
Category: Eccentric Plug
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

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

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 Dimensions 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