High Quality Corrosion Resistant Flange Hard Seal Stainless Steel Body Butterfly Valve

Product Description

Product Description

Our industrial butterfly valve is a high-performance flow control solution designed for efficiency, durability, and easy operation across diverse applications. Featuring a compact and lightweight structure, it offers quick on/off control and precise flow regulation, making it ideal for pipelines conveying water, gas, oil, chemical fluids, and HVAC systems.
Constructed with high-quality materials—choose from stainless steel (SS304/SS316) for corrosion resistance, cast iron for
cost-effectiveness, or PTFE-lined bodies for harsh chemical environments—it ensures long-term reliability even under high pressure (up to 10bar) and temperature ( -20℃ to 200℃) conditions. The valve is equipped with an EPDM or PTFE seal, providing excellent sealing performance to prevent leakage and reduce maintenance needs.
Available in multiple drive options: manual (handwheel/lever) for simple operation, electric for automated control with smart feedback, and pneumatic for fast response in industrial automation lines. Connection types include wafer, flanged, and lug designs, compatible with standard pipeline sizes from DN50 to DN600, ensuring easy installation and replacement.Compliant with international standards (ISO, DIN, ANSI), our butterfly valve meets strict quality requirements for industrial use.
Whether for municipal water supply, chemical processing, oil & gas, or HVAC projects, it delivers consistent performance, lower energy consumption, and a long service life—your trusted choice for efficient flow control.

Product Advantages

 1. Efficient Flow Control:It enables quick on/off operation and precise flow regulation, with a streamlined disc design that minimizes pressure loss, ensuring smooth medium conveyance in pipelines.
 2. Compact & Space-Saving:Featuring a lightweight and compact structure, it occupies less installation space compared to other valve types (such as gate valves), making it ideal for narrow or limited-space applications.
 3. Cost-Effective Solution:The simple structure reduces manufacturing and maintenance costs. It also has a long service life, lowering the overall lifecycle cost for users.
 4. Easy Installation & Maintenance:With flexible connection options (wafer, flanged, lug) and fewer internal components,
 installation is straightforward. Routine maintenance, like seal replacement, can be done quickly without complex disassembly.
 5. Wide Adaptability:Available in various materials (stainless steel, cast iron, PTFE-lined) and drive modes (manual, electric, pneumatic), it suits diverse media (water, gas, oil, chemicals) and working conditions (high pressure, high temperature, corrosion).
 6. Energy-Saving Performance:The low friction resistance between the disc and valve body reduces the energy required for operation, especially when matched with automated drive systems, contributing to energy conservation.

How does valve work?

Butterfly valves operate on a simple yet efficient principle centered around a rotating disc, which controls the flow of media through a pipeline.
At the core of the valve is a circular disc (resembling a butterfly's wing) mounted on a central shaft. When the valve is fully
open, the disc rotates to align parallel with the pipeline's inner wall. This position creates minimal obstruction, allowing media (such as water, gas, or chemicals) to flow through the valve smoothly with low pressure loss.
To close the valve, the shaft drives the disc to rotate 90 degrees (or a partial angle for throttling). As the disc turns, it
gradually blocks the pipeline's inner cross-section. When fully closed, the disc presses tightly against the valve seat (equipped with a seal like EPDM or PTFE), forming a tight seal to stop media flow and prevent leakage.
The rotation of the shaft is controlled by a drive mechanism. Manual drives (e.g., handwheels or levers) rely on manual force for operation, while automated drives (electric motors or pneumatic cylinders) enable remote, precise control—ideal for industrial automation systems. This simple rotational movement ensures quick response times, making butterfly valves suitable for both on/off service and throttling applications across various industries.

Product Parameters

 * Nominal Diameter (DN): Refers to the nominal inner diameter of the valve. The common range is DN15 - DN4800, such as DN50, DN100, DN600, etc.
 * Connection Dimensions: Include the bolt hole spacing and diameter for flanged connections, as well as dimensions for wafer connections. These must comply with relevant standards like ANSI, DIN, and ISO.
 * Pressure Rating: Common pressure ratings include PN6, PN10, PN16, PN25, PN40, PN63, etc. They can also be expressed in class ratings, such as CLASS 150, CLASS 300, CLASS 600, etc.
 * Operating Temperature: The operating temperature range varies depending on the valve body material and seal material, generally ranging from -29℃ to 1200℃. For example, butterfly valves with ordinary rubber seals typically have an operating temperature of around -20℃ to 120℃, while those with special metal seal materials can withstand high temperatures up to 1200℃.
 * Valve Body Material: Common materials include metal materials such as carbon steel, stainless steel (e.g., SS304, SS316), cast steel, cast iron, and brass, as well as plastic materials such as PES, PP, and PVC.
 * Seal Material: Common seal materials include rubber (e.g., EPDM, NBR), plastic (e.g., PTFE), and metal (e.g., stainless steel, cemented carbide).
 * Actuation Method: Mainly includes manual, pneumatic, electric, hydraulic, and worm gear drive.
 * Structural Type: Can be divided into center-line sealed butterfly valves, single-offset sealed butterfly valves, double-offset
 sealed butterfly valves, triple-offset sealed butterfly valves, etc.
 * Implementation Standards: Common implementation standards include NB/T47044, ASME B16.34, ISO 5208, etc.