1. Unique manual control mechanism

• Rope-type retractable structureUnlike traditional butterfly valves or ball valves, the Iris Valve uses ropes to tighten the outer circumference of a flexible sleeve, forming an adjustable opening. This structure allows the valve to achieve near-complete sealing when closed and enables stepless adjustment from fully closed to fully open when opened.

• Manual operation is simple.The opening can be adjusted by turning the handwheel, requiring no power or air supply. It is suitable for situations without power or with high explosion-proof requirements.

• Visualized opening adjustmentThe rotation angle of the handwheel is proportional to the opening size, allowing the operator to intuitively determine the current opening degree.

Example: In a food processing plant, the operator can precisely adjust the milk powder discharge speed using a handwheel to prevent dust dispersion or clogging.

2. Excellent powder and granular material control performance.

• Suitable for various powdersIncludes materials that are prone to bridging, easy to adhere, have poor flowability, or consist of large particles.

• Prevent material blockage.The flexible sleeve generates a "squeezing" effect during the contraction process, which helps break up slight clumps and prevent bridging.

• The adjustable flow range is wide.From full shut-off to **flow regulation**, the turndown ratio can reach over 1:10, adapting to different process requirements.

Example: In a plastic pellet conveying system, the Iris Valve can be used to control the flow of pellets from the silo into the conveying pipeline, preventing overload or material interruption.

3. High sealing performance and leak-proof design

• Flexible sleeve materialUsually, wear-resistant and corrosion-resistant rubber or polyurethane materials are used to ensure sealing performance.

• Leak-proof structureWhen the valve is closed, the sleeve is fully tightened, forming a sealing barrier to prevent dust leakage.

• Suitable for clean environmentsOptional food-grade or pharmaceutical-grade materials are available to meet standards such as GMP and FDA.

Example: In the pharmaceutical industry, using Iris Valve to control powder discharge can effectively prevent cross-contamination and dust leakage.

4. Modularity and Customizability

• A variety of calibers are available for selection.Common diameters include DN100, DN150, DN200, DN250, DN300, etc., and can be customized according to the size of the silo or pipeline.

• A variety of materials are available for selection.The sleeve material can be selected from NBR, EPDM, silicone, polyurethane, etc., to adapt to different chemical environments.

• Optional AccessoriesSuch as observation windows, vibrators, pneumatic actuators, etc., to enhance functionality and automation.

5. Easy to maintain and long service life.

• Simple structure, easy to disassemble.The sleeve can be quickly replaced, resulting in low maintenance costs.

• No easily damaged metal components.The main wear components are flexible sleeves, which are easy to replace and have a short maintenance cycle.

• Suitable for high-frequency operationsDesigned with a lifespan of up to hundreds of thousands of open-close cycles, it is suitable for frequent adjustment scenarios.

Example: In the building materials industry, Iris Valves are used to control the discharge of cement powder. Even when operated hundreds of times a day, they maintain stable performance.

V. Typical Application Scenarios