Dual Plate Wafer Check Valve
The Dual Plate Wafer Check Valve is a reliable, high-efficiency non-return valve designed to prevent backflow in fluid pipelines. Its compact, wafer-style body is designed to fit directly between two flanges, making it lightweight and easy to install. The dual-plate (or double-door) mechanism ensures quick, silent, and efficient closure.
⚙️ Technical Specifications
| Parameter | Specification | Note/Translation |
| Nominal Size (DN) | DN40 to DN1200 | Wide range of sizes. |
| Nominal Pressure (PN) | PN10, PN16, PN25, PN40 | Suitable for low to high-pressure ratings. |
| Body Material | EN-JS1040 (Ductile Iron) | A grade of Ductile Iron, offering strength and reliability. |
| Coating | Epoxy Resin | Provides effective anti-corrosion protection. |
| Working Temperature | -10°C to +80°C | Suitable for general utility fluids. |
| Connection Type | Wafer Type | Fits directly between pipeline flanges. |
| Sealing | Soft Seat | Ensures a tight, leak-proof seal. |
| Applicable Media | Clean or minimally contaminated water | Used for water pumping, service, and supply. |
⭐ Key Features and Advantages
- Dual Plate Design: Features two semi-circular plates (doors) that fold back into the flow when the pump is operating and quickly snap shut to prevent backflow when the pump stops.
- Spring-Assisted Closing: Utilizes a silent, progressive spring-assisted closing mechanism. This fast, dampened closure minimizes “water hammer” and reduces system noise and pressure surge.
- Wafer Installation: The wafer-style body is exceptionally compact and lightweight compared to traditional swing check valves, resulting in:
- Easy Installation: Simplified mounting between flanges.
- Reduced Space: Requires minimal installation space.
- Lower Cost: Requires less material and is easier to handle.
- Corrosion Protection: The Ductile Iron body is protected by an anti-corrosion epoxy coating, guaranteeing durability and long-term performance in water services.
- Flexible Installation: Can be installed in horizontal or vertical positions, offering versatility in pipeline design.
🏭 Ideal Applications
The Dual Plate Wafer Check Valve is an efficient and reliable choice for preventing reverse flow in systems such as:
- Water Pumping Stations
- Water Treatment and Distribution
- General Industrial Service and Utility Lines
- HVAC and Cooling Systems
This is an excellent choice for a space-saving and reliable anti-backflow solution.
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