AVM Sanitary Double Metering Butterfly Valve for Powder Dosing is developed for automated powder feeding processes where both discharge speed and dosing consistency need to be controlled. Instead of relying on a single opening for material discharge, the valve uses two independently controlled rotors to divide the feeding process into coarse dosing and fine metering stages.
The larger rotor handles the main material flow, while the smaller rotor controls the final quantity near the target value. This configuration is suitable for pharmaceutical ingredients, food powders, nutraceutical materials, chemical powders, and battery materials where repeated batch dosing requires stable control.
The valve separates powder feeding into two stages to provide different flow rates during one dosing cycle. This arrangement is useful when a production line needs to fill quickly at the beginning of a cycle but requires more controlled feeding as the target weight is approached.
The larger butterfly rotor opens first and provides the main material flow. Most of the required powder is transferred during this stage, helping shorten the bulk feeding time.
When the material quantity approaches the preset target, the large rotor closes and the smaller rotor continues feeding. The reduced opening provides finer control over the remaining material quantity.
After the target value is reached, the small rotor closes and the dosing cycle ends. The next cycle can then begin according to the programmed production sequence.
The Sanitary Double Metering Butterfly Valve for Powder Dosing is designed to work as part of an automated weighing and batching system. Its two pneumatic actuators can be controlled according to the target value received from the weighing system.
The valve can be connected to PLC-based control systems for programmed opening and closing sequences. This allows dosing parameters to be incorporated into the overall production recipe.
Load cells or weighing equipment can provide real-time weight information to the control system. The system can use this feedback to switch from coarse feeding to fine feeding as the material approaches the target quantity.
The dosing sequence can be incorporated into automatic batching, filling, and recipe management systems. This reduces the need for operators to manually adjust the material flow during repeated production cycles.
Different powders behave differently during feeding. Particle size, bulk density, moisture content, flowability, and cohesiveness can all affect the actual dosing result. The dual-rotor structure allows the material flow rate to be adjusted during different stages of the dosing cycle.
The coarse rotor is used when a higher material flow rate is required, while the fine rotor provides a smaller flow opening for the final adjustment. This helps reduce the dependence on a single valve opening when handling powders with different flow characteristics.
For powders that are sensitive to compaction or mechanical damage, the controlled rotor movement also helps avoid unnecessary material handling during the dosing process.
Product-contact components are manufactured from SS316L stainless steel. SS304 is used for non-product-contact components, providing a practical material combination for hygienic processing equipment.
Product-contact surfaces feature a sanitary finish of Ra ≤0.4 μm. The smooth surface helps reduce powder retention and supports routine cleaning and inspection.
PTFE, EPDM, Silicone, and FKM sealing materials are available. The appropriate seal should be selected according to the material being processed, operating temperature, cleaning method, and chemical compatibility.
The sanitary connection structure allows convenient access during inspection and cleaning. This is useful for production lines that require regular cleaning or frequent product changeover.
The standard configuration supports a working pressure range of -0.1 MPa to +0.5 MPa and a working temperature range of -20°C to +135°C. Actual operating conditions should be confirmed according to the selected seal material, cleaning procedure, and process requirements.
The valve is available with Tri-Clamp, butt weld, and flange connections. DIN, 3A, ASME BPE, and ISO connection standards can be selected according to the existing sanitary pipeline.
| Parameter | Specification |
| Valve Type | Sanitary Double Metering Butterfly Valve |
| Available Sizes | 6", 8", 10", 12" |
| Product Contact Material | SS316L |
| Non-Contact Material | SS304 Stainless Steel |
| Surface Finish | Ra ≤0.4 μm |
| Working Pressure | -0.1 MPa to +0.5 MPa |
| Working Temperature | -20°C to +135°C |
| Connection Standard | DIN, 3A, ASME BPE, ISO |
| Connection Type | Tri-Clamp, Butt Weld, Flange |
| Seal Materials | PTFE, EPDM, Silicone, FKM |
| Operation | Double Pneumatic Actuator |
The Sanitary Double Metering Butterfly Valve for Powder Dosing can be used for dosing APIs, excipients, and other pharmaceutical ingredients into automated batching systems. SS316L product-contact construction and sanitary surfaces support GMP-oriented processing environments.
The valve is suitable for controlled feeding of flour, starch, milk powder, additives, and other dry ingredients where repeatable batch quantities are required.
It can be integrated into dosing systems for vitamins, supplements, and functional powder ingredients where controlled feeding and hygienic cleaning are required.
The valve can be applied to controlled feeding processes for cathode materials, anode materials, conductive additives, and other fine powders. Material compatibility should be evaluated according to the specific process.
The valve can be installed upstream of filling and packaging equipment to provide controlled material delivery before each filling cycle.
Before ordering, buyers should confirm the powder characteristics, target dosing quantity, required feeding rate, weighing method, pipeline diameter, connection standard, cleaning process, and operating temperature.
The required dosing accuracy is also affected by the complete weighing system, powder flow properties, control parameters, and installation conditions. The valve should therefore be selected together with the weighing and control equipment rather than considered as an independent dosing component.
For pharmaceutical and food applications, SS316L product-contact construction and suitable FDA-compliant sealing materials can be specified according to the process requirements.
| Consideration | AVM Double Metering Butterfly Valve | Standard Powder Valve |
| Main Function | Controlled dosing and discharge | Material isolation or discharge |
| Dosing Method | Coarse + fine metering | Single-stage opening |
| Flow Control | Two flow stages | Single flow stage |
| Automation | Designed for PLC and weighing systems | Depends on system configuration |
| Application | Batching, weighing, filling | General powder transfer |
| Cleaning | Sanitary quick disassembly | Depends on structure |
A pharmaceutical manufacturer required a valve for automated ingredient preparation where both feeding speed and dosing consistency were important. The customer selected the AVM double metering design because the larger rotor could complete the main feeding stage quickly while the smaller rotor controlled the final quantity.
The system was connected with weighing equipment so that the control system could change from coarse feeding to fine metering as the target value was approached. This arrangement helped provide more stable dosing during repeated batch operations.
A food ingredient producer integrated the valve into an automatic weighing line for powder batching. The production line required sanitary construction, repeatable material feeding, and regular cleaning between batches.
The combination of SS316L product-contact parts, sanitary surface finish, and two-stage material control allowed the valve to work with the existing weighing and batching equipment.
AVM sanitary valve products are manufactured under controlled quality procedures and supported by ISO 9001 and CE certification. FDA-compliant materials are available for applicable food and pharmaceutical configurations.
The Sanitary Double Metering Butterfly Valve can be configured with SS316L product-contact components, sanitary surface finishes, and suitable sealing materials for GMP-oriented processing environments.
Material certificates and technical documentation can be supplied according to project requirements and customer quality procedures.
Routine inspection should focus on the two butterfly rotors, pneumatic actuators, sealing components, connection surfaces, and product-contact areas. Powder accumulation should be removed according to the plant's established cleaning procedure.
Seal condition should be checked regularly, particularly when the valve is exposed to frequent CIP cleaning, elevated temperatures, or aggressive cleaning agents. Replacement intervals depend on operating frequency and process conditions.
After maintenance or seal replacement, the valve should be inspected and tested before returning to production.
The larger rotor provides coarse feeding for the majority of the required material, while the smaller rotor performs fine feeding near the target quantity. The two stages are controlled separately during one dosing cycle.
Yes. The Sanitary Double Metering Butterfly Valve for Powder Dosing is designed for integration with PLC systems, load cells, weighing equipment, and automated batching systems. The final control method depends on the complete system configuration.
It can be used for pharmaceutical ingredients, food powders, nutraceutical materials, chemical powders, and selected battery materials. Actual suitability depends on particle characteristics and process conditions.
SS316L is used for product-contact components, while SS304 is used for non-product-contact components. Seal options include PTFE, EPDM, Silicone, and FKM.
CIP-compatible configurations are available, while SIP compatibility depends on the selected configuration and process conditions. The cleaning method should be confirmed before ordering.
Available sizes include 6", 8", 10", and 12". The appropriate size depends on the required powder flow rate, pipeline diameter, and process configuration.
Buyers should provide the powder type, target dosing quantity, required feeding rate, pipeline size, connection standard, cleaning method, working temperature, pressure, and seal requirements so the valve configuration can be matched to the application.
Address
No. 373 Oufan Road, Dongtou District, Wenzhou City, Zhejiang Province, China
Tel
