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4 Inch Dual Plate Wafer Lug Check Valve - China Suppliers & Factory for High-Quality Flow Control Components
| Valve Type: | Wafer check valve | Structure: | Double disc |
| Standard: | BS5153 | Workmanship: | Investment casting |
| Sealing Direction: | Single-directional | Sealing Grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Self-starting |
⚙ Characteristics
This valve adopts a wafer-type mounting design, which allows it to be directly sandwiched between a pair of pipeline flanges without requiring additional extended installation space. In contrast to flange-connected check valves, this configuration substantially reduces the spatial footprint of the entire piping system, rendering it particularly suitable for narrow or constrained installation environments.
✓ Advantages
Easy Installation
Adopting a clip on installation method, i.e. chip design, it can be easily installed between two pipeline flanges, saving space, reducing the overall weight of the system, and facilitating installation in narrow spaces.
Good Fluid Performance
The valve disc adopts a lightweight design and is equipped with low friction bearings, with low opening pressure, low fluid resistance, and smooth flow channels, which can reduce the energy consumption of power equipment such as pumps and compressors.
Excellent Sealing Performance
The double valve disc is precision machined, with a smooth sealing surface, and forms a double sealing barrier with an elastic valve seat. It can quickly close when the medium flows back, and has good sealing performance.
📦 Packing
📚 Standard export wooden case packaging
🏢 Application Scenarios
This valve finds extensive use in pipeline networks for industries ranging from water supply, sewage disposal and fire safety systems to petroleum refining, chemical manufacturing, power engineering and metallurgical operations. It demonstrates particularly strong compatibility with piping layouts where installation space is restricted.
❓ Frequently Asked Questions
Q What is a wafer check valve and how does it differ from a flanged check valve?
A wafer check valve is designed to be sandwiched directly between two pipeline flanges using bolts, requiring no additional end connections. Unlike flanged check valves, the wafer-style design significantly reduces face-to-face dimensions, saving installation space and reducing overall system weight.
Q What standard does this wafer check valve comply with?
This valve is manufactured in compliance with BS5153, a British Standard specification for check valves used in pipeline systems, ensuring consistent quality, dimensional accuracy, and reliable performance.
Q What is the operating temperature range of this valve?
This wafer check valve is rated for operating temperatures between -20°C and 120°C, making it suitable for a wide range of industrial fluid handling applications including water, chemicals, and petroleum-based media.
Q How does the double disc design improve sealing performance?
The double disc structure features precision-machined sealing surfaces that work in conjunction with an elastic valve seat to create a dual sealing barrier. This design enables rapid closure upon flow reversal, achieving zero leakage and preventing backflow effectively.
Q In which industries is this wafer check valve commonly used?
This valve is widely applied across water supply, sewage treatment, fire protection, petroleum refining, chemical processing, power generation, and metallurgical industries. Its compact wafer design makes it especially well-suited for installations with limited pipeline space.
Q How is this valve packaged for export?
All valves are shipped in standard export wooden cases, providing robust protection during international transit. The packaging is designed to prevent damage from moisture, impact, and vibration, ensuring the product arrives in perfect condition.