Flanged Ball Type Check Valve
The Flanged Ball Type Check Valve, also known as a non-return valve or single-direction valve, is an automatic flow control valve primarily designed to prevent medium backflow in pipelines, thereby safeguarding pump equipment and preventing water hammer (liquid shock).
Characterized by its unique cast iron, rubber-coated ball disc, this valve is particularly suitable for demanding applications involving high-viscosity fluids and those containing suspended solids, making it a specialized valve for municipal and industrial wastewater systems.
⚙️ Technical Specifications
| Parameter | Specification | Note/Standard |
| Body Material | Ductile Iron | Used for the robust valve body. |
| Nominal Size (DN) | DN40 – DN600 | Wide range suitable for sewage mains. |
| Nominal Pressure | 1.0 – 1.6MPa | ≈PN10 – PN16 |
| Connection Type | Flanged | Standard GB/T17241.6 GB/T 9113 |
| Disc/Seal Material | Cast Iron Ball Encapsulated in Rubber (O-ring seal) | Optimized for sewage and suspended solids. |
| Applicable Media | Water, Industrial & Domestic Sewage | Specialized for high-viscosity, suspended solids media. |
| Applicable Temperature | 0°C – 80°C | Standard temperature range for water/sewage. |
| Control Method | Hydraulic Control / Fluid Self-Controlled | Automatic operation based on fluid pressure. |
| Testing Standard | GB/T13927, AP1598 | Tested for sealing and pressure integrity. |
⭐ Core Design and Performance Features
1. Specialized Sealing Mechanism
- Rubber-Coated Ball Disc: The unique spherical disc is encapsulated in rubber, providing a large, soft sealing surface that ensures excellent sealing performance and a long service life.
- Rolling Action: The disc rolls up and down along an internal guide path within the valve body, using the media’s force to open and closing via gravity/pressure differential.
2. Superior Flow and Anti-Clogging
- Full-Channel Structure: The valve body is cast in a full-bore structure, ensuring the flow channel is highly unobstructed.
- Low Resistance and High Flow: This structure provides the benefits of large flow capacity and low fluid resistance.
- Suspended Solids Handling: The rolling ball design and full passage make it perfectly suited for high-viscosity and sewage networks with suspended solids, where traditional check valves would easily clog.
3. Operational Advantages
- Minimal Water Hammer: The quick closing action of the disc ball minimizes the closing impact, preventing the generation of water hammer.
- Flexible Installation: Can be installed in both horizontal and vertical pipelines, offering installation convenience.
- Compact Design: Features a short face-to-face length, making it smaller and lighter than many traditional flanged check valves.
🏭 Ideal Applications
This valve is the specialized solution for gravity-sensitive or solid-containing fluids:
- Wastewater Treatment Plants
- Industrial and Domestic Sewage Networks
- Submersible Sewage Pump Discharge Lines
- General Industrial Lines handling viscous or particle-laden media.
This Ball Type Check Valve is designed for reliable, maintenance-free service in challenging fluid environments.
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