Double-interlocked preaction valve is mainly used in preaction system, which utilize compressed nitrogen or air in the system piping, and water under pressure is held below valve until electrical/pneumatic actuators operate.
Available size
| Size | Connection | Working pressure (psi) | Ref. No. |
|---|---|---|---|
| 2″ / DN50 | FxF, GxG, FxG | 300 | V6801 |
| 2-1/2″ / DN65 | FxF, GxG, FxG | 300 | V6802 |
| 3″ / DN80 | FxF, GxG, FxG | 300 | V6803 |
| 4″ / DN100 | FxF, GxG, FxG | 300 | V6804 |
| 5″ / DN125 | FxF, GxG, FxG | 300 | V6805 |
| 6″ / DN150 | FxF, GxG, FxG | 300 | V6806 |
| 8″ / DN200 | FxF, GxG, FxG | 300 | V6807 |
| 10″ / DN250 | FxF, GxG, FxG | 300 | V6808 |
| 12″ / DN300 | FxF, GxG, FxG | 300 | V6809 |
Note:
1. It is Double interlock type with pneumatic-pneumatic actuation, and it also includes electrical and manual release in case of emergency.
2. The valve assembly must be worked with air pressure maintenance device and air compressor, and they are separately supplied.
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