Source Factory | Professional Custom Air Filters, Air Dampers, Air Diffusers, and Operating Room Accessories
Nominal diameter | Flange outer diameter | Inner diameter | Overall length | Socket depth | Wind speed-flow (CMH) | ||
v≈1m/s | V≈6m/s | v≈10m/s | |||||
315 | 395 | 315 | 460 | 53 | 150 | 1579 | 2400 |
250 | 339 | 250 | 380 | 40 | 100 | 968 | 1600 |
200 | 280 | 200 | 397 | 30 | 65 | 500 | 1000 |
160 | 240 | 160 | 366 | 30 | 35 | 300 | 600 |
110 | 190 | 110 | 279 | 30 | 20 | 140 | 280 |
Air volume and pressure control | Fume hood surface wind speed control | ||
Integrated control configuration | Multifunctional control configuration | Integrated control configuration | Multi-function control configuration |
Valve body + QAVC10 controller | Valve body + analog quantity fast execution | Valve body + FHC10 controller | Valve body + analog fast actuator |
Valve body + analog fast actuator | |||

Nozzle pressure measurement structure
The Venturi nozzle type wind measurement structure is more accurate and has a larger adjustment ratio. Error within +/-4%, air volume adjustment 16:1

High-precision flow sensor
Comes with high-precision flow sensor, real-time measurement

Anti-corrosion and airtightness
Anti-corrosion and airtightness report certified by a third-party testing agency

Application scenario
① Used in fume hoods, the functions can be realized: face air velocity control
② Used in exhaust and air supply ducts, the functions can be realized: control of room pressure/pipe pressure/pipe air volume
In laboratories, chemical industries, pharmaceuticals and environmentally friendly waste gas treatment systems, exhaust ducts are often exposed to acid and alkali gases, corrosive air or chemical waste gases. Ordinary metal air valves are prone to problems such as corrosion, sticking, sealing loss and increased maintenance costs during long-term use.
PP variable air volume butterfly valve is made of corrosion-resistant PP material and is suitable for long-term use in corrosive exhaust systems. The product has a simple structure and flexible adjustment. It can control the air volume according to the system demand, which helps to maintain the stable operation of the exhaust system, improve the pipe air volume balance effect, and reduce the difficulty of later maintenance.
The valve body and main components can be made of PP polypropylene material, which has good acid and alkali resistance, corrosion resistance and chemical gas resistance, and is suitable for use in laboratories, chemical industries and waste gas treatment systems.
By adjusting the opening angle of the butterfly plate, the air flow in the pipe can be controlled, which facilitates system debugging, air volume balance and operation management.
Electric actuators or control signal interfaces can be configured according to project requirements to achieve remote adjustment or automatic control, and are suitable for use in variable air volume ventilation systems.
The butterfly valve has a compact structure, flexible opening and closing movements, and low resistance. It is suitable for installation in ventilation ducts and exhaust gas treatment pipelines.
Suitable for exhaust scenarios containing acidic, alkaline or corrosive gases, which can reduce maintenance problems caused by corrosion of metal valves.
According to the use needs, you can choose manual adjustment of the handle, electric actuator control, switch control or proportional adjustment control to meet different system automation requirements.
Flange connection, socket connection or other installation structures can be designed according to the pipe connection method to facilitate on-site installation and maintenance.
Can be customized according to customer’s air duct size, air volume requirements, control method and system parameters, suitable for different laboratories, chemical industry and environmental protection engineering projects.
PP variable air volume butterfly valve is widely used in the following scenarios:
Laboratory exhaust system
Chemical laboratory
Fume hood exhaust system
Pharmaceutical workshop
Chemical plant exhaust duct
Acid and alkali waste gas treatment system
Environmental waste Gas treatment equipment
Clean factory exhaust system
Electroplating workshop exhaust system
Semiconductor and electronic factory exhaust system
Hospital laboratories and testing centers
Industrial ventilation new construction, renovation and maintenance projects
Mainly used for:
Duct air volume adjustment
Exhaust system air volume balance
Corrosive gas emission control
Fume hood exhaust control
Air volume control at the inlet and outlet of exhaust gas treatment equipment
Variable air volume ventilation system supporting equipment
Laboratory safety Exhaust management
Chemical and pharmaceutical environment ventilation control
Acid mist, alkali mist and chemical gas exhaust system
Industrial exhaust duct switching and adjustment
We support non-standard customization according to customer project needs to meet the actual use requirements of different countries, different engineering systems and different corrosive environments.
Customizable content includes:
Valve size customization
PP material thickness and structure customization
Round or square pipe connection structure
Flange connection, socket connection or other connection methods
Manual adjustment or electric control method
Electric actuator brand and specification selection
Switching, regulating or proportional control configuration
0-10V, 4-20mA or other control signal interfaces
Opening feedback or status feedback function
Sealing structure and valve plate structure customization
Corrosion-resistant fastener configuration
OEM / ODM production
Processing according to drawings or samples
Whether it is a single laboratory project or batch matching of chemical, pharmaceutical, and environmental engineering projects, we can provide flexible product solutions according to customer needs.
We are familiar with the requirements for corrosion resistance, air volume adjustment and operational stability of laboratory, chemical, pharmaceutical and environmentally friendly waste gas treatment systems, and can provide customers with practical and reliable PP air valve products.
Can be customized according to customer drawings, air duct size, air volume parameters, control methods and usage environment, suitable for new projects, renovation projects and equipment procurement.
Made of PP corrosion-resistant material, it is suitable for acid and alkali gases, chemical waste gases and humid exhaust environments, and can reduce maintenance problems caused by corrosion.
The product can meet the needs of manual adjustment, electric adjustment and automatic control, and is suitable for ventilation and exhaust gas treatment systems of different complexity.
The product can be adjusted in packaging, size, connection method, actuator configuration and control signal according to the needs of foreign customers, and supports batch orders and OEM cooperation.
Quality control is carried out from material selection, processing and molding, valve body assembly, actuator installation, action testing to factory inspection to ensure stable product structure, smooth adjustment and reliable use.
We can quickly provide product solutions and quotations based on the dimensions, pictures, drawings, air volume parameters, control methods or project requirements provided by customers.
If you are looking for PP variable air volume butterfly valve or corrosion-resistant ventilation butterfly valve, please contact us to get a quote.
In order to provide you with an accurate solution faster, please provide the following information:
Required valve size
Pipe shape, such as round or square
Material requirements and PP sheet thickness
Usage scenarios, such as laboratory exhaust, chemical waste gas or acid-base gas emissions
Control methods, such as manual, electric switch type or electric adjustment type
Whether required Actuator, signal feedback or remote control
Air volume range or system parameters
Connection method, such as flange connection or socket connection
Purchase quantity
Do you need customized drawings or OEM services?
Destination port or delivery location
We will provide professional suggestions, product solutions and quotations based on your needs.
Looking for a reliable manufacturer of air filtration, air distribution, and cleanroom equipment? We provide high-quality products, competitive factory pricing, and flexible OEM/ODM customization services for global customers, meeting the diverse needs of industrial, medical, cleanroom, and HVAC projects.
Address: No. 458 Jiangping Road, Jingjiang City, Jiangsu Province, China
Payment Terms: L/C, T/T, D/P
International Trade Terms: FOB, CFR, CIF, DAP, EXW
Average Lead Time: Peak season: one month; off season: within 15 working days
Nearest Port: Shanghai
Looking for a reliable supplier of air filtration, air distribution, or cleanroom system products? We provide factory-direct pricing, customized OEM/ODM services, and complete engineering project solution support.
Submit your requirements, and our engineering team will provide a dedicated solution and quotation within 12 hours, including detailed product specifications and delivery lead time.