Yamato Protec Corporation
Yamato Protec YVB-40 Simultaneous Opening Valve

Manufacturer: Yamato Protec Corporation
Model: YVB-40
Application
This localized valve opens fixed foam, water spray, or open-type stage sprinkler systems.
| Product name | YVB-40 |
|---|---|
| Model number | Kai No. 24-5 |
| Maximum flow rate (L/min) | 450 |
| Equivalent pipe length (m) | 6.9 |
| Pressure test pressure | 2.0 MPa |
| Operating pressure range | 0.15–1.4 MPa |
| Mounting direction | Can be used vertically or horizontally |
| Paint color | Red (7.5R4/14) |
Overview
The YVB type simultaneous opening valve (pressure reducing type) primarily serves foam fire extinguishing systems in parking lots. It has passed the tests stipulated in the Ministerial Ordinance (Ministry of Home Affairs Ordinance No. 19 of 1975) that establishes technical standards for simultaneous opening valves, based on the provisions of Article 21-4, Paragraph 2 of the Fire Service Act. The simultaneous opening valve is a pressure-reducing valve that sits within each discharge area. A sensing head (closed-type sprinkler head) can activate it automatically, or a manual activation device can open it via remote control.











