PVC (polyvinyl chloride) and PP (polypropylene) are two common materials used to manufacture backdraft dampers, as they are lightweight, durable, and resistant to corrosion and moisture. These materials are also non-reactive and do not release harmful chemicals, making them safe for use in air handling systems.

Backdraft dampers are typically installed in ventilation ducts or exhaust systems to prevent the unwanted entry of air, moisture, or contaminants. They work by using flaps or blades that are positioned to allow air to flow in one direction, while closing to prevent reverse flow of air.

Backdraft dampers are commonly used in HVAC (heating, ventilation, and air conditioning) systems, as well as in industrial, commercial, and residential settings. They are an important component for maintaining air quality and preventing the spread of contaminants, and can help to improve energy efficiency and reduce heating and cooling costs.

A backdraft damper is a device used to prevent the backflow of air through a duct or ventilation system. It is typically installed in exhaust fans, dryer vents, and other ventilation systems to prevent air from flowing back into the system when it is not in use.

Here are some general steps for using a backdraft damper:

Install the backdraft damper: The first step is to install the backdraft damper in your ventilation system. The installation process will vary depending on the type of damper you have and the specific system you are installing it in. Follow the manufacturer’s instructions carefully to ensure proper installation.

Test the damper: Once the damper is installed, you can test it by turning on your ventilation system and observing the damper. It should open to allow air to flow out of the system, and then close to prevent air from flowing back in.

Maintain the damper: Backdraft dampers should be inspected regularly to ensure that they are functioning properly. Clean the damper and surrounding area as needed to prevent buildup of dirt or debris that could interfere with its operation.

Replace the damper if necessary: Backdraft dampers may wear out over time or become damaged, and may need to be replaced. If you notice that your damper is not functioning as it should, it may be time for a replacement.

Overall, a backdraft damper is an important device for ensuring the safe and effective operation of your ventilation system. By following these steps and ensuring that your damper is functioning properly, you can help to prevent the backflow of air and ensure that your system is working efficiently.

1. The role of water balance. The Check Valve Industrial is reasonable, ensuring reliable fresh air distribution in different areas.
2. The function of energy-saving and precise control of air volume. On the premise of ensuring the fresh air volume, the system runs energy-saving and low-consumption
3. It is widely used in the industrial waste gas treatment industry, which can accurately control waste gas emissions and prevent the backflow of toxic waste gas.
4. The effect of reducing noise. It can effectively reduce wind noise and other noise in the air duct, especially in the exhaust system of industrial production and office buildings, replacing exhaust fans, significantly reducing noise, saving energy, and maintaining continuous ventilation.

The Check Valve with nothing to do with the pipeline pressure is used in the central fresh air system and exhaust system to effectively ensure the continuous new air volume and exhaust volume effectively and accurately control the air volume and reduce noise. They are usually used in a large area in the air duct system of the central fresh air system and exhaust system of hotels, hospitals, office buildings, and other places to replace traditional manual valves and exhaust fans.

Check Valve Duct Damper Control has a range:

The Check Valve  is suitable for industrial waste gas treatment, civil building HVAC systems, ventilation equipment in school laboratories, and hospital ventilation and exhaust systems. It is one of the vital equipment to control ventilation modes in various environments. Its main features are flexible operation, low noise, small leakage (closed type leakage> 0.5%), wide operating temperature range, reliable structure, safe and convenience.

Warrantry time: 1 year

• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com

The Butterfly Valve is made of PP/PVC material, which is resistant to acid and alkali corrosion. The working principle of the PP/PVC plastic manual air valve is the same as that of the PP/PVC electric air valve, except that the electric actuator is changed to a pneumatic actuator, and the air pipe is controlled by a third-party plate solenoid valve. The switch realizes the opening and closing of the Manual Damper.

Butterfly Valve is suitable for application environments with explosion-proof requirements such as chemical plants and laboratories. Used in PVC ventilation duct system, connected with PVC air duct. It is used for exhaust control of corrosive gas, corrosion resistance and acid resistance. Manual Damper have complete specifications, and are equipped with PP/PVC air ducts, elbows, tees, and reducers to form a complete PP/PVC ventilation duct system. The pneumatic actuator of the PP/PVC plastic manual air valve can be selected according to the specifications of the air valve. torque.

Butterfly Valve is a kind of non-closed butterfly valve, which is widely used in universities, chemical industry, biology, electric power, energy, environmental engineering, etc. During the production process, the medium temperature is less than or equal to 90℃, and the nominal pressure is less than 0.1Mpa. Connect, open and close or adjust the medium, usually installed at the top of the fume hood, PVC suction hood, and at the entrance of the pipeline of the spray tower to be used as the switching direction of the exhaust gas flow of the spray tower

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

The The Restricts Air Flow Valve produced by Xicheng EP Ltd. is mainly used in PP material ventilation duct system, connected with PP air duct, used for corrosive gas extraction and exhaust control, anti-corrosion acid and alkali resistance, PP electric air valve specifications Complete, supporting PP air ducts, elbows, tees, and variable diameters are used to form a complete PP ventilation duct system. The damper body below ø315 is injection-molded, and the body above ø315 is custom-made by coil.

The Restricts Air Flow Valve is a kind of non-sealed butterfly valve, which is widely used in colleges, chemical, biological, electric power, energy, environmental engineering, etc. in the production process, the medium temperature is less than or equal to 90 ℃, and the nominal pressure is less than 0.1Mpa. , Open and close or adjust the medium, usually installed on the top of the fume hood, the PP suction hood and the inlet of the pipeline of the one-use-one-standby spray tower, as a switch to the exhaust gas flow direction of the PP spray tower.

The Restricts Air Flow Valve

The Restricts Air Flow Valve is installed in the PP pipeline system. Through manual operation or PLC automatic control technology, the PP electric air valve can be opened and closed according to the needs. Drive the rotation of the butterfly valve blade to achieve a 90-degree angle, achieve the purpose of opening and closing, and have a feedback indication function. Through the differential pressure detection device, after closing the air valve, the signal is transmitted to the PLC system, so as to control the PP fan inverter to reduce the speed and save energy.

The Restricts Air Flow Valve

Voltage: AC220V
Current: <0.1A
Torque: 8N/m
Switch stroke: 6 seconds

The Restricts Air Flow Valve performance characteristics

PP material processing, acid and alkali corrosion resistance, strong anti-corrosion performance;
Both ends of the Analog Electric Damper are designed with sockets and flanges, and flanges can also be welded;
High-strength actuator, all-copper design, switch life more than 20,000 times;
The inner and outer walls are smooth and the wind resistance is small.

The Restricts Air Flow Valve specifications and models

The Restricts Air Flow Valve industry application

Workshop ventilation system
Chemical fresh air system
Laboratory ventilation system
HVAC system

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

The Industrial Ventilation Pipe Fittings Valve Electric Actuator produced by XICHENG EP LTD is mainly used in PP material ventilation duct system, connected with PP air duct, used for corrosive gas extraction and exhaust control, anti-corrosion acid and alkali resistance, PP electric air valve has complete specifications, supporting PP Air ducts, elbows, tees, and variable diameters are used to form a complete PP ventilation duct system. The damper body below ø315 is injection-molded, and the body above ø315 is custom-made by coil.

Industrial Ventilation Pipe Fittings Valve Electric Actuator is a kind of non-sealed butterfly valve, which is widely used in universities, chemical industry, biology, electric power, energy, environmental engineering, etc. in the production process, the medium temperature is less than or equal to 90℃, and the nominal pressure is less than 0.1Mpa. , Open and close or adjust the medium, usually installed on the top of the fume hood, the top of the PP suction hood, and the inlet of the pipeline of the one-use and one-standby spray tower, as a switch to the exhaust gas flow direction of the PP spray tower.

Industrial Ventilation Pipe Fittings Valve Electric Actuator

The Industrial Ventilation Pipe Fittings Valve Electric Actuator is installed in the PP pipeline system. Through manual operation or PLC automatic control technology, the PP electric air valve can be opened and closed according to the needs. Drive the rotation of the butterfly valve blade to achieve a 90-degree angle, achieve the purpose of opening and closing, and have a feedback indication function. Through the differential pressure detection device, after closing the air valve, the signal is transmitted to the PLC system, so as to control the PP fan inverter to reduce the speed and save energy.

Industrial Ventilation Pipe Fittings Valve Electric Actuator parameters

Voltage: AC220V
Current: <0.1A
Torque: 8N/m
Switch stroke: 6 seconds

Industrial Ventilation Pipe Fittings Valve Electric Actuator performance characteristics

PP material processing, acid and alkali corrosion resistance, strong anti-corrosion performance;
Both ends of the PP electric air valve are designed with sockets and flanges, and flanges can also be welded;
High-strength actuator, all-copper design, switch life more than 20,000 times;
The inner and outer walls are smooth and the wind resistance is small.

Industrial Ventilation Pipe Fittings Valve Electric Actuator industry application

Workshop ventilation system
Chemical fresh air system
Laboratory ventilation system
HVAC system

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

1. The role of water balance. The PVC Swing Check Valve Industrial is reasonable, ensuring reliable fresh air distribution in different areas.

2. The function of energy-saving and precise control of air volume. On the premise of ensuring the fresh air volume, the system runs energy-saving and low-consumption

3. It is widely used in the industrial waste gas treatment industry, which can accurately control waste gas emissions and prevent the backflow of toxic waste gas.

4. The effect of reducing noise. It can effectively reduce wind noise and other noise in the air duct, especially in the exhaust system of industrial production and office buildings, replacing exhaust fans, significantly reducing noise, saving energy, and maintaining continuous ventilation.

The PVC Swing Check Valve Industrial with nothing to do with the pipeline pressure is used in the central fresh air system and exhaust system to effectively ensure the continuous new air volume and exhaust volume effectively and accurately control the air volume and reduce noise. They are usually used in a large area in the air duct system of the central fresh air system and exhaust system of hotels, hospitals, office buildings, and other places to replace traditional manual valves and exhaust fans.

The PVC Swing Check Valve Industrial has a range:

The PVC Swing Check Valve Industrial is suitable for industrial waste gas treatment, civil building HVAC systems, ventilation equipment in school laboratories, and hospital ventilation and exhaust systems. It is one of the vital equipment to control ventilation modes in various environments. Its main features are flexible operation, low noise, small leakage (closed type leakage> 0.5%), wide operating temperature range, reliable structure, safe and convenience.

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

(1) The Rectangular Motorized Duct Damper has four specifications when the blade width is all the same. The blade shape is a diamond-shaped double blade, and the blades are soft overlapped, so the sealing performance is excellent.

(2) The valve body frame of the air volume control valve is injection molded from polypropylene material, which has good sealing performance. The product itself has the characteristics of anti-acid and alkali corrosion, and can be widely used in exhaust gas exhaust pipes.

(3) The dispatch valve is divided into manual and electric. The valve body structure and specifications are the same.

2.the characteristics of the Rectangular Motorized Duct Damper

(1) The takeover standard of the split multi-leaf air volume dispatching valve is the same as the rectangular air duct standard of the national ventilation duct standardization.

(2) The blades of the air volume dispatching valve are side-opening and forward-opening, which are used as dispatching valves in ventilation, air dispatching and air purification systems.

(3) According to the test, the air-tightness of the air volume dispatching valve is good, and its relative air leakage is about 5%, and the dispatching performance is good.

3.the scope of application of the Rectangular Motorized Duct Damper

It is widely used in industrial, mining, and civil building HVAC systems to accurately schedule air flow. It is one of the key equipment for controlling ventilation modes in various environments. Its main features are flexible work, low noise, small leakage, reliable structure, safety and convenience.

The above are the main functions and features of the air valve. There are also different types of air valve for different occasions and needs.

• 
• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

The Manually Operated Air Auct Air Volume Damper is made of PP/PVC material, which is resistant to acid and alkali corrosion. The working principle of the PP/PVC plastic manual air valve is the same as that of the PP/PVC electric air valve, except that the electric actuator is changed to a pneumatic actuator, and the air pipe is controlled by a third-party plate solenoid valve. The switch realizes the opening and closing of the Manual Damper.

Manually Operated Air Auct Air Volume Damper is suitable for application environments with explosion-proof requirements such as chemical plants and laboratories. Used in PVC ventilation duct system, connected with PVC air duct. It is used for exhaust control of corrosive gas, corrosion resistance and acid resistance. Manually Operated Air Auct Air Volume Damper have complete specifications, and are equipped with PP/PVC air ducts, elbows, tees, and reducers to form a complete PP/PVC ventilation duct system. The pneumatic actuator of the PP/PVC plastic manual air valve can be selected according to the specifications of the air valve. torque.

Manually Operated Air Auct Air Volume Damper is a kind of non-closed butterfly valve, which is widely used in universities, chemical industry, biology, electric power, energy, environmental engineering, etc. During the production process, the medium temperature is less than or equal to 90℃, and the nominal pressure is less than 0.1Mpa. Connect, open and close or adjust the medium, usually installed at the top of the fume hood, PVC suction hood, and at the entrance of the pipeline of the spray tower to be used as the switching direction of the exhaust gas flow of the spray tower

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

The Polyethylene Plastic Damper is made of PP/PVC material, which is resistant to acid and alkali corrosion. The working principle of the PP/PVC plastic manual air valve is the same as that of the PP/PVC electric air valve, except that the electric actuator is changed to a pneumatic actuator, and the air pipe is controlled by a third-party plate solenoid valve. The switch realizes the opening and closing of the Manual Damper.

Polyethylene Plastic Damper is suitable for application environments with explosion-proof requirements such as chemical plants and laboratories. Used in PVC ventilation duct system, connected with PVC air duct. It is used for exhaust control of corrosive gas, corrosion resistance and acid resistance. Manual Damper have complete specifications, and are equipped with PP/PVC air ducts, elbows, tees, and reducers to form a complete PP/PVC ventilation duct system. The pneumatic actuator of the PP/PVC plastic manual air valve can be selected according to the specifications of the air valve. torque.

Polyethylene Plastic Damper is a kind of non-closed butterfly valve, which is widely used in universities, chemical industry, biology, electric power, energy, environmental engineering, etc. During the production process, the medium temperature is less than or equal to 90℃, and the nominal pressure is less than 0.1Mpa. Connect, open and close or adjust the medium, usually installed at the top of the fume hood, PVC suction hood, and at the entrance of the pipeline of the spray tower to be used as the switching direction of the exhaust gas flow of the spray tower

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783

The Constant Air Volume dampers (CAV) is made of PP/PVC material, which is resistant to acid and alkali corrosion. The working principle of the PP/PVC plastic manual air valve is the same as that of the PP/PVC electric air valve, except that the electric actuator is changed to a pneumatic actuator, and the air pipe is controlled by a third-party plate solenoid valve. The switch realizes the opening and closing of the Manual Damper.

Constant Air Volume dampers (CAV) is suitable for application environments with explosion-proof requirements such as chemical plants and laboratories. Used in PVC ventilation duct system, connected with PVC air duct. It is used for exhaust control of corrosive gas, corrosion resistance and acid resistance. Manual Damper have complete specifications, and are equipped with PP/PVC air ducts, elbows, tees, and reducers to form a complete PP/PVC ventilation duct system. The pneumatic actuator of the PP/PVC plastic manual air valve can be selected according to the specifications of the air valve. torque.

Constant Air Volume dampers (CAV) is a kind of non-closed butterfly valve, which is widely used in universities, chemical industry, biology, electric power, energy, environmental engineering, etc. During the production process, the medium temperature is less than or equal to 90℃, and the nominal pressure is less than 0.1Mpa. Connect, open and close or adjust the medium, usually installed at the top of the fume hood, PVC suction hood, and at the entrance of the pipeline of the spray tower to be used as the switching direction of the exhaust gas flow of the spray tower

• Warrantry time: 1 year
• Product spec: Custom
• Material: 100% polypropylene
• Shape: round or square
• Contact information
• Email: Leyte@chian-xicheng.com
• Whatsapp: +86 19925135783