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China Wafer Butterfly Valve Suppliers - Ductile Iron and PTFE Rubber Factory DN50-DN600 for Fluid Control
Product Specification
| Product Name | Butterfly valve | Body/Disc Material | Ductile Iron |
| Type | Wafer | Shaft | SS304/SS316 |
| Size | DN50-DN600 | Seal | PTFE |
| Operation | Handle/Worm gear/Electric/Hydraulic/Peneumatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Butterfly valves function on a straightforward yet effective principle, relying on a central disc rotated by a stem to control fluid passage. This disc, when aligned with the pipeline, allows unobstructed flow, while a 90-degree rotation seals the passage completely—making the valve ideal for on-off or throttling applications.
The key components driving performance include the disc, stem, body, and sealing assembly. Disc designs vary by application: resilient-seated discs offer tight closure for low-pressure systems, while metal-seated options withstand high temperatures and abrasive media. The stem, often connected to manual handles or automated actuation systems, ensures precise disc positioning, with anti-leakage features preventing fluid loss at the stem-body interface.
Compared to other valve types, butterfly valves deliver distinct benefits: their compact profile reduces installation space, and the minimal pressure drop across the disc enhances energy efficiency. They also excel in rapid operation, with quick opening/closing cycles that minimize process downtime. These traits make them suitable for scenarios ranging from municipal water distribution to light industrial fluid handling, where reliability and cost-effectiveness are paramount.
Frequently Asked Questions
What is the operating principle of a wafer butterfly valve?
A wafer butterfly valve operates by using a central disc connected to a stem. When the disc is aligned with the pipeline, it allows fluid to flow freely. Rotating the disc 90 degrees blocks the passage completely, providing tight sealing for on-off or throttling services.
What materials are used in the construction of these butterfly valves?
The valve body and disc are made of durable Ductile Iron. The shaft is constructed from high-grade SS304 or SS316 stainless steel, and the sealing assembly utilizes PTFE for excellent chemical and temperature resistance.
What sizes and international standards are supported?
These valves are available in sizes ranging from DN50 to DN600. They are designed to meet multiple international standards, including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility with global piping configurations.
What options are available for valve operation?
To accommodate different system requirements, the valves support multiple operation methods, including manual Handle and Worm gear, as well as automated Electric, Hydraulic, and Pneumatic actuation systems.
What are the main advantages of using a butterfly valve?
Key benefits include a compact, space-saving profile, minimal pressure drop for improved energy efficiency, and rapid opening and closing cycles. This makes them highly cost-effective and reliable for municipal water distribution and light industrial fluid systems.