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4.6.1 Quick release valve QRV
FIGURE 4-7: Quick release valve QRV
1. Thread for manual/electrical release device (here with a plastic protective cap)
2. Pressure relief button for the filling process
3. Pressure gauge connection
4. Bursting disc safety device (safety screw)
5. Valve inlet
6. Sequence valve connection
7. Valve output
8. Locking nut
9. Control connection
The quick release valve is installed on an extinguishing agent container and can be opened pneu-
matically, electrically or manually. When the valve is open, the extinguishing agent flows through
the pipelines to the extinguishing nozzles.
The valve works according to the differential pressure system. By activating a release device, the
pilot valve integrated in the valve is opened and the upper pressure chamber is vented abruptly.
This drop in pressure causes the extinguishing agent container pressure to press the closing pis-
ton in the opened position, thereby opening the valve.
The valve is fitted with an integrated pneumatic release device as standard. In addition, an electri-
cal release device and/or manual release device can be fitted on their designated thread.
Inst. and Maint. Manual | Oxeo PR LCP | F_101921 Rev 02 | 10-2022 | en
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