Name: Motorized Duct Dampers | 220V/24V PP/PVC Air Volume Control Valves | XiCheng EP
SKU: 6570
Availability: InStock

Description

XiCheng EP manufactures premium motorized duct dampers (electric air volume control valves) designed for precise airflow regulation in industrial and laboratory ventilation systems. Our dampers feature a one-piece injection molded body and self-developed electric actuator, delivering exceptional sealing performance, corrosion resistance and long-term reliability in harsh environments.

These 200mm and 250mm standard models are the most widely used in laboratory fume hood systems and industrial exhaust gas treatment lines. They are fully compatible with our complete range of PP ventilation ducts and anti-corrosion pipe fittings, providing a seamless airflow control solution for your entire ventilation system

Core Advantages of XiCheng Motorized Duct Dampers

Table of Contents

1. Superior One-piece Injection Molding Construction

Sizes ≤φ315mm adopt precision injection molding technology, creating a seamless, gap-free valve body
Excellent airtightness with ≤1% air leakage rate, significantly improving system energy efficiency
Uniform wall thickness and high structural strength, resistant to deformation under high airflow pressure
Smooth inner surface minimizes airflow resistance and pressure drop

2. Excellent Corrosion Resistance

Standard materials: 100% virgin PP and PVC, resistant to most acids, alkalis and chemical fumes
Custom materials available: stainless steel (304/316) and glass fiber-reinforced plastic (FRP) for extreme environments
Ideal for use in corrosive ventilation systems paired with PP wet scrubbers and activated carbon adsorption towers

3. Precise & Reliable Electric Control

Equipped with XiCheng self-developed electric actuator for accurate airflow regulation
Two voltage options: 220V AC (for industrial applications) and 24V DC (for safety-critical laboratory environments)
Fast response time with full open/close operation in 5-15 seconds (depending on size)
Manual override function for emergency operation during power outages

4. Easy Installation & Maintenance

Lightweight design (80% lighter than metal dampers) reduces installation time and labor costs
Multiple connection options: collar connection for quick installation and flange connection for high-pressure systems
Modular design allows for easy replacement of actuator without removing the entire valve body
No lubrication required, minimal maintenance needs

5. Comprehensive Customization Capabilities

Custom sizes available from φ50mm to φ1200mm
Both round and square dampers can be manufactured to your specifications
Custom voltage, control signals (0-10V, 4-20mA) and fail-safe positions available
Custom colors and branding options for bulk orders

Comprehensive Technical Specifications

Parameter	Standard Options	Customization Available
Material	100% Virgin PP, 100% Virgin PVC	Stainless Steel 304/316, FRP, PP-FRP Composite
Standard Sizes (Injection Molded)	PP: φ50, φ63, φ75, φ90, φ110, φ160, φ200, φ250, φ315mm PVC: φ110, φ160, φ200, φ250, φ315mm	φ350mm to φ1200mm (hand welded) Square dampers: 100×100mm to 1000×1000mm
Connection Methods	Collar connection (injection models)	Flange connection, custom connections
Voltage Options	220V AC (50/60Hz), 24V DC	110V AC, 380V AC, 12V DC
Control Type	On/off control	Modulating control (0-10V, 4-20mA)
Operating Temperature	-10℃ to 60℃ (PP) -10℃ to 50℃ (PVC)	Special grades for up to 120℃
Pressure Rating	0.6MPa	Up to 1.0MPa
Air Leakage Rate	≤1% at 500Pa	–
Actuator Torque	5Nm to 50Nm (depending on size)	Higher torque options available
Open/Close Time	5-15 seconds	Custom speed options
Seal Material	EPDM	Silicone, Viton
Certifications	CE, RoHS	ISO 9001, UL
Standard Price	$20.00 (φ200mm PP model)	Custom quote based on specifications

Product Structure & Working Principle

Internal Structure

Our motorized duct dampers consist of three main components:

Valve Body: One-piece injection molded PP/PVC body with integrated connection ends
Butterfly Disc: Precision molded disc with EPDM seal for excellent airtightness
Electric Actuator: Self-developed high-torque actuator with manual override lever

Working Principle

When the actuator receives an electrical signal, it drives the butterfly disc to rotate 0-90 degrees, changing the cross-sectional area of the duct to regulate airflow. The on/off control type provides fully open or fully closed positions, while the modulating control type allows for precise adjustment of airflow volume from 0% to 100%.

Step-by-Step Installation Guide

Collar Connection (Recommended for Standard Installations)

Cut the PP ventilation pipe to the required length and deburr the ends
Slide the collar over the pipe end
Insert the damper into the pipe until it stops
Tighten the collar evenly around the connection to ensure a secure, leak-proof seal
Connect the electrical wiring according to the wiring diagram
Test the damper operation to ensure it opens and closes smoothly

Flange Connection (For High-Pressure Applications)

Weld PP flanges to both ends of the damper and the connecting pipes
Insert an EPDM gasket between the flanges
Align the bolt holes and tighten the bolts evenly in a crisscross pattern
Connect the electrical wiring and test the operation

For detailed installation instructions and video tutorials, refer to our PP Ventilation System Installation Guide.

Typical Application Scenarios

Our motorized duct dampers are widely used in various industrial and commercial ventilation systems:

Laboratory Fume Hoods: Precise airflow control to maintain safe working conditions
Electroplating & Etching Lines: Corrosion-resistant dampers for acid and alkaline fume exhaust systems
Chemical Processing Plants: Airflow regulation in corrosive gas treatment systems
Pharmaceutical Manufacturing: Clean room ventilation and exhaust gas control
Semiconductor Manufacturing: Toxic process gas exhaust systems
Wastewater Treatment Plants: Odor control ventilation systems
Commercial HVAC Systems: Airflow balancing and zone control

View our project gallery to see our motorized dampers in action in real-world installations.

Matching Ventilation System Components

Complete your ventilation system with our high-quality compatible products:

PP Ventilation Ducts and fittings
PP 45° & 90° Elbows
Anti-corrosion Centrifugal Fans
PP Wet Scrubbers for waste gas treatment
Manual PP Butterfly Valves for manual airflow control
PP Flexible Connectors to absorb vibration

Why Choose XiCheng EP?

With 16 years of specialized experience in manufacturing anti-corrosion plastic ventilation equipment, XiCheng EP has become a trusted supplier to clients in over 50 countries worldwide.

ISO 9001 Certified Manufacturing: All products undergo strict quality control at every stage of production
Self-developed Actuators: We design and manufacture our own electric actuators for optimal performance and reliability
Large Inventory: Standard sizes are always in stock for immediate shipment
Custom Engineering: Our in-house team can design custom dampers to meet your specific requirements
Competitive Pricing: Direct factory pricing without middleman markup
Comprehensive Warranty: All our motorized dampers come with a 12-month warranty against manufacturing defects
Global Technical Support: Our engineers are available to provide installation training and technical assistance worldwide

For bulk orders, custom specifications or technical consultation, contact our sales team today for a free, no-obligation quote.

Frequently Asked Questions (FAQ)

Q: What is the difference between PP and PVC dampers?

A: PP dampers offer better chemical resistance, higher temperature tolerance (-10℃ to 60℃ vs -10℃ to 50℃ for PVC) and greater impact strength. PVC dampers are generally less expensive and suitable for less demanding applications. For a detailed comparison, read our article: PP vs PVC: Which is Better for Industrial Ventilation?

Q: Can I use these dampers outdoors?

A: Yes, our standard PP dampers are UV-stabilized and can be used outdoors. For prolonged exposure to direct sunlight in harsh climates, we recommend our special UV-resistant PP grade.

Q: Do you offer modulating control dampers?

A: Yes, we offer modulating control dampers with 0-10V or 4-20mA input signals for precise airflow regulation. These are ideal for applications where variable airflow is required.

Q: What is the maximum size damper you can manufacture?

A: We can manufacture custom dampers up to φ1200mm in diameter or 1000×1000mm square. Larger sizes are available upon request.

Q: How do I choose the correct voltage for my application?

A: 220V AC is the most common choice for industrial applications, while 24V DC is recommended for laboratory environments and applications where electrical safety is a priority.