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KSB MIL 71000 V-Notch Ball Control Valve Segmented Ball

Segmented ball with V-notch opening for high rangeability (300:1) and excellent throttling control. Self-cleaning action for slurry, fiber, and particulate-laden fluids. Quarter-turn operation for fast response. 1” to 24”. Class 150–600.

Multi-Material V-NotchClass 150, 300, 6001” to 24”

Specifications

ParameterSpecification
SeriesMIL 71000
Body MaterialWCB / CF8M / SS 316
Pressure ClassClass 150, 300, 600
Size Range1” to 24”
Max Temperature400°C
Max PressureClass 600
Design StandardIEC 60534
End ConnectionsFlanged, Wafer
ConstructionQuarter-turn, torque actuated
Trim / SealingV-notch segmented ball, characterized for equal % flow
✓ IEC 60534

Material & Applications

Why Multi-Material V-Notch: The V-notch opening creates a shearing action that cuts through fibers and prevents clogging that would disable a globe control valve. The 300:1 rangeability means the valve can accurately control flow from maximum down to 1/300th of maximum — far exceeding the 50:1 typical of globe control valves. Quarter-turn operation provides faster response than the multi-turn stem travel of globe valves. The segmented ball also provides higher flow capacity (Cv) than a globe valve of the same size.

Typical applications: Slurry control in mining and mineral processing. Pulp & paper stock control. Sugar mill process control (juice, syrup, molasses with suspended fibers). Wastewater with solids. Also excellent for clean fluids where high rangeability and fast response are needed — steam, gas, and liquid flow control.

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Other Variants

Globe MIL 41000 Anti-Cavitation MIL 77000 HP Letdown MIL 76000 All MIL Control Valves →

Service Area

Pune, Ahmednagar & Beed.

Multi-Material V-Notch Control Valve FAQs

Why V-notch instead of globe for sugar factories?
Sugar process fluids (raw juice, syrup, molasses, massecuite) contain fibers, bagasse particles, and suspended solids. Globe valves with cage trim can clog within hours. The V-notch ball shears through fibers with every rotation, maintaining a clean flow path. The 300:1 rangeability also handles the wide flow variations in sugar process better than globe valves (50:1).
What is the self-cleaning action?
As the V-notch ball rotates, the sharp edge of the V-notch cuts through any material caught between the ball and seat. This prevents buildup and clogging. Combined with the high-velocity flow through the V-notch opening, this creates a self-cleaning effect that keeps the valve operational in dirty service.
Can V-notch replace globe control valves?
Yes, in many applications. V-notch provides better rangeability, higher capacity, faster response, and self-cleaning action. However, globe valves offer better shutoff (Class V vs Class IV for V-notch) and are available in higher pressure classes (up to 4500 vs 600 for V-notch). For clean service requiring tight shutoff, globe valves are still preferred.

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