Iris Valve
Iris Valve – Series 1918
Precision Flow Control for Dry Bulk Materials
The Iris Valve – Series 1918 from SUDE Engineering Private Limited is a precision-engineered flow control device designed to regulate or completely shut off the flow of dry bulk materials, including powders, granules, and pellets. Its operation is based on a flexible diaphragm or overlapping metal segments that open and close concentrically—similar to the mechanism of a camera iris. This provides smooth, dust-tight, and gentle control, making it ideal for handling sensitive or fragile materials without causing degradation or compaction.
Engineered for high-performance industrial applications, the iris valve ensures reliable isolation and precise material flow, reducing spillage and minimizing contamination. Its compact and lightweight design allows seamless integration into hoppers, silos, feeders, and conveying systems, optimizing material handling efficiency and plant layout.
The valve is built with durable materials and precision-machined components to withstand abrasive, high-temperature, and particulate-laden conditions, ensuring long-term service and minimal maintenance. Its dust-tight operation also supports environmental compliance and cleaner working conditions in process plants.
Compatible with manual, pneumatic, or electric actuation, the iris valve can be easily integrated into automated process control systems for responsive and accurate material flow management. Widely used in cement, food processing, chemical, pharmaceutical, and bulk material industries, this valve reflects SUDE Engineering Private Limited’s commitment to innovative design, operational safety, and reliable industrial flow control solutions.
Technical Specifications
Parameter
Shapes Available
Circular
Size Range
Typically, DN 100 to DN 600 (custom sizes available)
Flow Media
Dry bulk solids – powders, grains, granules, pellets
Blade Type
Flexible diaphragm or overlapping metallic segments
Sealing Efficiency
Dust-tight (suitable for non-pressurized systems)
Sealing Type
Flexible diaphragm (rubber, nylon, PU) or metal leaf
Temperature Range
Up to 120°C (higher with special materials)
Material of Construction
Aluminium, Stainless Steel, or Mild Steel body with Nylon/EPDM/PU sleeve
Pressure Rating
Atmospheric (non-pressurized applications)
Drive Operations
Manual handwheel, pneumatic actuator, or electric motor
Testing Standards
Factory functional and sealing test
Design Standards
Custom-engineered per bulk material handling norms
Working Principle:
Open Position
The iris diaphragm is fully retracted, allowing unrestricted material flow.
Flow Control (Modulating)
Rotating the outer ring manually or via actuator adjusts the diaphragm aperture to precisely control the material flow rate.
Closed Position
The diaphragm closes concentrically, sealing the outlet gently without cutting or damaging the material.
Key Features & Advantages
- Smooth and gentle flow control for delicate materials
- Dust-tight sealing ensures clean operation
- Compact and lightweight for easy installation
- Minimal maintenance with simple diaphragm replacement
- Available in hygienic and food-grade variants
- Fully customizable actuation and material combinations
Why Choose Iris Valve – Series 1918?
- Precision-engineered for reliable performance in bulk material systems
- Proven durability and consistent sealing in continuous operations
- Designed for safe, tool-free maintenance
- Supported by Sude Engineering’s extensive service network and application expertise
SUDE Iris Valve Advantage:
It provides smooth and gentle flow control for delicate materials, with dust-tight sealing that ensures clean and efficient operation.
Its compact, lightweight design allows easy installation, requires minimal maintenance with simple diaphragm replacement, and is available in hygienic, food-grade, and fully customizable configurations.
Applications
Discharge control for silos, hoppers, and IBCs
Bag filling and emptying systems
Pharmaceutical and food processing equipment
Powder and granular material handling
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