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1. When the diameter of the fire pump outlet pipe exceeds 300mm, a single manual valve should not be used. The valve must be clearly marked with opening and closing indicators. A remote Control Valve should be equipped with a quick-opening and quick-closing function, as well as reliable sealing to ensure proper operation during emergencies. This is essential for maintaining system integrity and response efficiency.
2. Valves that are normally open or normally closed must be fitted with locking mechanisms to prevent accidental operation. Control valves and those requiring regular operation should have visible open/close indicators for easy identification. Additionally, any valve involved in remote control gun linkage must send its opening and closing signals to the central control room, ensuring real-time monitoring and coordination.
3. On dry powder pipelines, ball valves should be used, and their size must match the pipe diameter exactly. This ensures smooth flow and minimizes pressure loss, which is crucial for the effective delivery of dry powder during fire suppression.
4. All pipeline systems should be constructed from corrosion-resistant materials or undergo anti-corrosion treatment on the outer surface. This helps extend the service life of the system and prevents damage caused by environmental factors such as moisture, chemicals, or salt exposure.
5. Suitable flushing connections should be installed at appropriate locations where foam, foam mixture, or seawater is used. These connections allow for routine maintenance and cleaning, ensuring the system remains functional. An automatic air vent valve should also be installed at the highest point of any section where air could accumulate, preventing air pockets that might affect system performance.
6. A bypass test interface must be provided after the foam proportioning device. This allows for testing and calibration of the system without interrupting normal operations, ensuring accurate foam delivery when needed. Such a feature enhances system reliability and facilitates regular inspections and maintenance.
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