FAQ
Does this check valve comply with the BS 1868 standard?
The entire product line is designed to be fully compatible with the BS 1868 standard. We can provide corresponding compliance certificates to meet the procurement requirements for industrial projects in Europe.
What is the applicable standard for wafer-type check valves?
Wafer-type check valves are designed in strict accordance with the API 594 standard. Their slim, lightweight construction is ideal for pipeline installations with limited space.
What are the typical applications for axial-flow check valves?
The axial-flow design features a smoother flow path and lower resistance at high flow rates, making it suitable for pipeline locations—such as pump outlets—that require rapid check valve response.
What is the difference between internal-shaft and external-shaft designs?
Internally mounted shafts have no exposed parts, reducing direct erosion of the shaft by the medium; externally mounted shafts allow for online maintenance and lubrication without disassembling the valve body, accommodating various operational and maintenance needs.
Can check valves effectively mitigate water hammer in pipelines?
An optional slow-closing, noise-reducing configuration is available. By extending the closing time, it reduces the impact force, effectively mitigating destructive water hammer during start-up and shutdown cycles to protect downstream equipment.