Stainless Steel Ventilation Butterfly Valves

The stainless steel D341W ventilation butterfly valve is a centerline butterfly valve specifically designed for industrial ventilation systems. It is manufactured using stainless steel materials such as 304, 316, 304L, and 316L, and complies with the D341W series and relevant industry standards for ventilation butterfly valves. The valve is installed in ventilation duct systems via flange connections and is driven by either manual operation or a worm gear actuator to rotate the disc, enabling opening, closing, and flow adjustment of gaseous media.

As a typical stainless steel ventilation butterfly valves, its design is optimized for low-pressure, large-diameter, dusty, and corrosive gas conditions. While ensuring basic sealing performance, it also meets the ventilation system’s requirements for flow capacity, operational flexibility, and long-term stability.

Structure & Working Principle

Centerline Design

The stem and disc share the same centerline, so the disc rotates around the stem axis during operation. This simple and balanced structure reduces opening torque and is well-suited for long-term use in large-diameter ventilation ducts.

Flange Connection

Both ends of the valve body feature integral flanges compatible with GB/T 9113 or ANSI B16.5. Installation is straightforward using bolts, ensuring reliable positioning and easy maintenance.

Ventilation-Specific Sealing

The “W” in D341W indicates a ventilation-type structure designed to control leakage rather than achieve zero leakage. Options include metal hard seals or metal + fluororubber composite seals, which reduce jamming caused by dust or thermal expansion while maintaining safe operation.

Actuation Options

Smaller sizes: Manual operation for simplicity and easy maintenance

Medium and large sizes: Worm gear actuators for higher torque, easier operation, and suitability for overhead or centralized control

Key Features

Strong Material Adaptability

Stainless steel construction provides excellent corrosion and oxidation resistance, suitable for sulfur-containing flue gas, acidic gases, and high-humidity environments.

Low Flow Resistance

The centerline design and thin disc minimize airflow obstruction, reducing system resistance and energy consumption.

Controllable Maintenance Costs

With fewer components and a straightforward sealing structure, routine inspection and maintenance are minimal, making it ideal for continuously operating ventilation systems.

Wide Operating Range

Temperature range: -30℃～400℃Pressure range: PN0.1～PN1.0MPaSuitable for most industrial ventilation and flue gas applications.

As a mature stainless steel ventilation butterfly valves, its design prioritizes system stability and long-term reliability.

Applications

The D341W stainless steel ventilation butterfly valves is widely used in:

Metallurgy: Blast furnace, sintering, dust collection, and flue gas handling systems

Power industry: Boiler air and flue gas systems, desulfurization and denitrification ducts

Chemical industry: Process exhaust systems with corrosive gases

Building materials & cement: Kiln tail dust collection, hot air recirculation systems

Environmental engineering: Industrial waste gas treatment and emission systems

In these applications, the stainless steel ventilation butterfly valves primarily serves for isolation, regulation, and flow diversion, rather than high-pressure sealing control.

Technical Parameters

Selection & Usage Recommendations

Key selection considerations include:

Medium composition and corrosivity

Design pressure and operating temperature

Pipe size and installation space

Presence of high dust, high temperature, or continuous operation

For dusty environments, a perforated stainless steel disc is recommended. For high-temperature flue gas systems, metal hard seals are preferred to enhance stability.

Conclusion

The stainless steel D341W ventilation butterfly valve is characterized by reliable structure, stable materials, and strong adaptability. As a standardized stainless steel ventilation butterfly valves, it is designed to meet the long-term safety and maintenance requirements of industrial ventilation and flue gas systems, making it a practical choice for engineering projects and equipment integration.