double dosing butterfly valve

Double Dosing Butterfly Valve is a highly precise twin-rotor metering valve designed specifically for controlled dosing and discharge of powders and granular materials. The valve features two separate rotors: the larger rotor handles fast, coarse dosing, while the smaller rotor performs fine dosing to ensure high accuracy during material discharge. This dual-stage operation enables seamless switching from bulk feed to precision top-up, making it ideal for automatic batching and weighing systems.
The valve is intended to work in conjunction with a material weighing or recipe dosing system, allowing for automated, programmable control of fill volume or weight. Its modular quick-release clamp design allows for fast disassembly, cleaning, and reassembly, reducing downtime and ensuring hygiene compliance in food, pharmaceutical, chemical, and material processing industries.

Key Features & Advantages:

Dual-rotor structure for high-efficiency and high-accuracy dosing
Coarse and fine metering combination for precision batch control
Compatible with PLCs and industrial weighing systems
Quick-clamp sanitary design for easy cleaning and maintenance
Suitable for powders, granules, and dry bulk solids
FDA-compliant seals and optional 304/316L stainless steel contact surfaces
Perfect solution for automated powder handling and hygienic filling systems

Parameter

Specifications:

Sizes: 6.0", 8.0", 10.0", 12.0"

Working Pressure: -0.1 MPa ~ +0.5 MPa

Working Temperature: -20°C to +135°C (depending on sealing material)

Metal Materials:
Contact with medium: 304 or 316L stainless steel
Non-contact parts: 304 stainless steel

Sealing Materials (Options):
PTFE (standard configuration)
EPDM rubber, silicone rubber (optional)

Surface Finish:
Contact surfaces: Ra < 0.4 μm
Non-contact surfaces: Polished or electrolytically treated

Connection Standards: ASME-BPE

Connection Methods: Welded, clamped, etc.

Actuation:
Large Rotor Actuator:
0–90° (butterfly rotor)
0–180° (star rotor)
Small Rotor Actuator:
0–180° actuator
Pneumatic motor or servo motor (optional)