OBD (2)OBD (2)


Currently, on the market, all kinds of air valves are designed with many different designs and models to meet the needs of many customers. Opposed Blade Damper (OBD) is an outstanding product that is trusted by many customers.

However, what is a square vent OBD valve and what are its characteristics. Let’s follow the post shared below of the P69 Mechanical Factory for answers.

What is Opposed Blade Damper (OBD)?

Opposed Blade Damper (OBD) also known as electric wind valves are being commonly used on the market, including round and square electric valves, installed on the wind pipeline, and solenoid valves installed on the wind, usually installed on the air intakes of the intake system. exhaust, smoke extraction, and on vents located on the ductwork.

Van OBD cửa gió vuông
High-quality Opposed Blade Damper (OBD) from P69 Mechanical Factory

Product Information

Product code: S- OBD

Materials: Galvanized steel sheet, stainless steel

Limited temperature: -20 to 120 Celsius Degree

Coating: Powder-coated

Standard color: Black, other standard colors

Detailed Structure:

– Body type: Body is not welded. Thickness from 0.75 -1.15(mm)

– Vane type: Single wing. Thickness from 0.58 – 1.15(mm).

Non-return Damper vane movement


– The vane is easily adjusted thanks to the interlocking mechanism connecting the blades to gently move, adjusted by a locking screw or a lever.

– Can be easily adjusted fully open, half or fully closed by the adjusting screw right in the valve, the operator can operate right under the ceiling without climbing up to the ceiling.

Connection: Connect the voice cage directly to the air duct cavity

Size: As required

Opposed Blade Damper (OBD) General Structure

+ An electric wind valve is composed of many main parts such as: valve body, vane, screw, screw, valve shaft, lever handle, motor, fuse … In fact, the structure of each auxiliary valve belongs entirely to the category of air valves; as well as the functions they can perform in each system.

+ An electric wind valve product is manufactured in many stages, under the support of machines, the production time of the valve will be reduced and each part will hold a separate function.

+ The electric wind valve has the body of the electric wind valve made of galvanized steel, which can be made of stainless steel or stainless steel. On the valve with an additional electric motor, the type is On / Off or stepless adjustment, the voltage used is AC 220V; AC 24V or DC 24V The electric air flow control valve can be round or square valve.

Opposed Blade Damper (OBD) Usage characteristics

The external design is not much different from the conventional hand-held wind valve, but the structure and operation process are completely different. With the automatic motor system, the electric wind valve will be opened and closed and perform the following purposes:

+ The electric wind valve can be used in the ventilation system or in the control system and is installed on the return or supply air, depending on the intended use.

+ The air flow is adjusted by the motor, so it can achieve high efficiency, making the system’s output easy to turn off and control.

+ Using the solenoid valve, the return and supply air volume is adjusted very easily and quickly, ensuring the best efficiency for the circulation of the wind system.

+ Wind valve is made of 2 main materials: stainless steel or galvanized steel, solenoid valve has an adjustment mechanism to open and close standard French steel standards, ensuring durability and anti-rust effectively.

+ The electric wind valve can self-correct, automatically open without having to use the handle like other types of air valves.

Opposed Blade Damper (OBD) Production Process

An electric wind valve product is manufactured and delivered to the user through many different production stages. Depending on its characteristics and general structure, the production process will be carried out according to each fixed and standard stage. The steps to make an electric wind valve product include the following steps:

+ Cutting materials

+ Create products

+ Mounting shaft, mounting wings

+ Fixed lever

In particular, the stage of fixing the electric wiper plays an extremely important role, which can be fixed by a screw with a screw valve or by mounting a motor, attaching a fuse with a fire suppression valve. At this stage, with each product, they will be performed with different operations and content.

Product Detailed Video

Where to buy the best Opposed Blade Damper (OBD)

So where to buy Opposed Blade Damper (OBD)? Definitely a question that gets the attention of many customers. On the market, there are many different product suppliers, but P69 Company is still a name trusted and chosen by customers because of the following advantages:

– A team of professional technicians with high professional qualifications

– Cheaper than other brands

– Product warranty policy 12-36 months

– Home delivery support

– Consulting and answering all questions 24/7

The above is the product information that P69 Mechanical Factory introduces, hopes to help you gain more useful knowledge about the product before choosing. If you have any questions, please contact our hotline directly for answers!


  1. Hiếu

    Sản phẩm bên mình rất chất lượng luôn, rất chắc chắn và bền bỉ. Mình thấy rất đúng khi lựa chọn mua hàng tại cơ khí P69

Add a review

Your email address will not be published. Required fields are marked *