A wet-operated valve type water flow detection device that reduces the risk of false fire alarms and water leaks. This product has passed the tests stipulated by the ministerial ordinance that sets the technical standards for water flow detection devices.
| Product name | YAVS-150AⅡ |
|---|---|
| Model number | Flow No. 2025-6 |
| Maximum flow rate (L/min) | 4800 |
| Nominal pressure | 10K |
| Installation method | vertical |
| Operating pressure range | 0.15–1.4 MPa |
| Detection flow constant | 50/60 (combined type) |
| Non-operating flow rate | 18L/min or less |
| Contact capacity | AC 250V 2A |
| DC 30V 2A | |
| Delay time | 5-25 seconds |
Purpose
Sprinkler, water spray, and foam fire extinguishing systems primarily use the YAVS-II wet-type water flow detection valve. This device meets the technical standards set by the Fire Service Act (Article 21-2, Paragraph 2). Pressurized water or foam solution constantly fills both the primary side (inlet) and secondary side (outlet). Opening a closed sprinkler or release valve drops the secondary-side pressure, which immediately opens the main valve body. The pressurized fluid then flows outward, causing the device to automatically detect the internal water flow and trigger an alarm signal.
