Constant Air Volume Valve
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Constant Air Volume Valve

Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd is a professional supplier and manufacturer of Constant Air Volume Valve in China. We are equipped with advanced production machines and skillful workers. Our aiming is to produce good products for our customers. We look forWard to your cooperation to have more market shares.

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Product Description

As a professional Constant Air Volume Valve manufacture, you can rest assured to buy Constant Air Volume Valve. our factory and we will offer you the best after-sale service and timely delivery. We hope to establish friendly cooperative relationship with your company with high quality products, reasonable price, considerate service and create a better future hand in hand.


1. Product Introduction

Constant air volume valve is a mechanical self-operated device suitable for ventilation and air conditioning systems that require constant air volume. The air volume control of the constant air volume valve does not require external power. It relies on the air force in the air duct to locate the position of the control valve, so as to maintain the air flow at the preset flow rate in the entire pressure difference range.


2. Product Parameter (Specification)

Connection form: flange

Nominal diameter: customized (mm)

Applicable medium: air

Pressure environment: normal pressure

Working temperature: normal temperature

Flow direction: one-way

Drive mode: manual

Parts and Accessories: Valve Stem

Form: Rotary

Type (channel position): two-way

Sealing form: hard sealing type

3. Product Feature And Application

The constant air volume valve is an automatic mechanical mechanism that does not require external power. An additional electric actuator can be added to change the flow setting through remote control signals. The constant air volume valve can be used in air supply and exhaust systems. The working temperature is generally 10 to 50°C, and the pressure difference range is 50 to 1000 Pa, that is, at least a 50 Pa pressure difference is applied before and after the valve, otherwise the constant air volume valve will not work. This should be noted, because the wind pressure value of the fresh air unit of the fresh air system is generally not large. The fixed air volume valve is not limited by position when installed, but the shaft of the valve plate should be kept level. Generally, a straight inlet air duct with a distance of 1.5 times the long side of the valve and a straight outlet air duct with a distance of 0.5 times are required.


Application of variable wind system

Exhaust system application

Air Duct Application

Purification system application

4. Product Details


The constant air volume valve is easy to install, not easy to corrode, and supports customization.


Thickened plate.Select high-quality thickened galvanized sheet.High hardness, not easy to corrode.



manual adjustment

Handle adjustment to control the air volume

easy to use



Low air leakage

Treated with sealing sheet

Good air tightness



Q:How does your factory do regarding quality control? 
A:"Quality is priority. We always attach great importance to quality controlling from the very beginning to the very end. Our factory has gained ISO9001:2008 authentication.


Q: Do you provide samples? Is it free or extra?

A: Yes, we could offer you the sample machine. But it's not free. You need to pay for the sample and the cost of freight.


Q: What is the warranty time of your products?
A: The warranty time is 12months from the date of the commissioning. All quick-wear spare parts will be provided for free within the warranty period. After the warranty, we also can ensure that you can buy any necessary spare parts with favorable price within 5 years.


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