China Customized Valve Manufacturers Factory - Wholesale Bulk Valve

Fire Damper
A product is a crucial safety device installed in the air ducts of ventilation and air conditioning systems. It normally remains open to allow regular airflow. When a fire occurs and the smoke temperature reaches 70°C, the product
read more
Smoke Exhaust Fire Damper
The product is a specialized valve installed in mechanical smoke exhaust systems. It normally remains open, ready to exhaust smoke during a fire. When the smoke temperature inside the duct reaches 280°C, the smoke exhaust fire damper
read more
Air Volume Regulating Valve
The air volume regulating valve is a simple yet essential device used in ventilation and air conditioning ducts. Its main function is to adjust the air volume in branch ducts or to mix fresh air and return air. This product is available in
read more
Explosion-proof Air Valve
Ultra-Fast Protection in Hazardous Environments The explosion-proof air valve is a specialized safety device used in duct systems located in areas containing explosive gases, dust, or fibers. It provides blast resistance, isolation, and
read more
Stainless Steel Air Valve
The stainless steel air valve is not a special-function valve, but rather a material option. Any valve type—such as a regulating valve, fire damper, or check valve—can be manufactured as a product. The key benefit is outstanding resistance
read more
Panel Exhaust Outlet
The panel exhaust outlet is installed at the entrance of building smoke exhaust ducts. It normally stays closed. When a fire breaks out, the product opens automatically or manually to quickly extract hot smoke. This helps clear escape
read more
Aluminum Check Valve
One-Way Airflow Protection with No Power Needed The aluminum check valve is an automatic valve that allows air or smoke to flow in only one direction. It completely prevents reverse flow. This product requires no electricity or manual
read more
Constant Air Volume Valve
The constant air volume valve, also called a CAV valve, is a mechanical device that requires no external power. It uses an internal spring and balancing mechanism to automatically adjust its opening. This keeps the airflow through the
read more
Adjusting Air Volume Control Valve
The adjusting air volume control valve, often called a VAV terminal, is an electronically controlled device. It automatically adjusts the amount of air supplied to a room based on the room’s temperature. When the room becomes too warm, the
read more
Stop Valve Ac
The stop valve AC, also called a rectangular shut-off valve, is designed for one main purpose: to completely block airflow when closed. Unlike standard control valves, this product seals tightly between the blades and frame, and between
read more
Circular Sealing Valve
The circular sealing valve is designed to completely block airflow in round ducts when closed. Like its rectangular counterpart, it creates a tight seal between the blade and valve body, as well as between the valve and the duct
read more

We're well-known as one of the most experienced valve manufacturers in China, also support customized service. With abundant experience, we warmly welcome you to buy bulk discount valve from our factory. If you have any enquiry about quotation, please feel free to email us.