Dilution Valve
Dilution Valve – V-Notch Segmented Ball Control Valve -1560 / 1555 / 1565 Series
The Dilution Valve is a high-performance V-Notch Segmented Ball Control Valve, specifically designed for precise dilution, consistency control, and low-flow regulation in demanding process applications. It is widely used where accurate addition of dilution water or chemicals is critical to maintaining product quality and process stability.
The valve combines the control accuracy of a globe valve with the robust construction and compact design of a ball valve. Its precision-machined V-notch ball geometry ensures excellent controllability at very low flow rates while maintaining high capacity at full opening. This makes the dilution valve ideal for continuous modulating service in severe and particle-laden media.
Technical Specifications
Parameter
Valve Type
V-Notch Segmented Ball Dilution Valve
Series
1560 / 1555 / 1565
Sizes
DN25 to DN500 (1” to 20”)
Design
Segmented Ball, V-Notch Shear Stream
End Connections
Flanged / Flangeless (Wafer)
Body Material
Carbon Steel / Stainless Steel (SS316 / SS316L)
Ball Material
Chrome Plated Stainless Steel
Shaft Material
High-Strength Stainless Steel
Seat Material
PTFE / Filled PTFE
Leakage Class
Class IV (Metal Seat), Class VI (Soft Seat)
Flow Characteristic
Linear / Modified Equal Percentage
Pressure Class
ANSI 150 – 300
Temperature Range
Ambient to Process-Specific
Operation
Pneumatic / Electric (On-Off or Modulating)
Design & Construction:
The valve incorporates a precision-machined V-notch segmented ball with shear-stream design, providing excellent control accuracy, reduced clogging, and stable operation even in fibrous, slurry, or particle-laden media.
Working Principle:
Working Principle
The Dilution Valve operates by rotating a V-notch segmented ball in response to a control signal
Open Position
At small openings, the V-shaped notch allows highly precise low-flow control As the valve opens further, the flow increases proportionally, maintaining stable regulation
Closed Position
Tight seating ensures reliable shut-off when the valve is fully closed The segmented design provides a shearing action, reducing clogging and ensuring consistent performance even with fibrous, slurry, or particle-laden media.
Automation & Control Options:
- Control Modes: On/Off, Modulating (3–15 psi / 4–20 mA via I/P Converter)
- Actuator Types: Spring Return (Fail-Safe), Double Acting
- Air Control: Solenoid Valves (3/2, 5/2), FRL Unit (Filter Regulator Lubricator)
- Feedback Systems: Limit Switch Box, Position Transmitter
- Position Control: Pneumatic / Electro-Pneumatic Positioner, I/P Converter
Key Features & Advantages
- Precision V-notch segmented ball for accurate dilution control
- Excellent low-flow accuracy and wide rangeability
- High resistance to clogging and fouling
- Tight shut-off with metal or soft seating options
- Low operating torque and smooth modulation
- Compact, lightweight construction
- Suitable for continuous regulating duty
- Designed for harsh and particle-entrained services
Optional Accessories:
- Electro-pneumatic positioner
- Air filter regulator
- Solenoid valve
- Position transmitter
- Limit switch box
- Manual override (optional)
Industries Served
Pulp & Paper Industry
Stock preparation and approach flow systems
Chemical dosing and blending systems
Industrial automation systems
Typical Applications:
Basis weight and consistency control, dilution water lines, slurry and fiber-laden media handling, chemical dosing systems, and process water regulation.
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