Low Vent High Seal Valve

QDG0.3/6.6

1 Overview

The low vent high seal valve is installed on the starting pipeline to prevent the gas from leaking due to the chronic leakage of the starting bottle. The buildup of pressure in the start-up pipeline causes the fire extinguishing system to malfunction. When the starting bottle group leaks, the pressure is (not accumulated) discharged through the valve. When the starting bottle group is open, the pressure is greater than the closing pressure; the valve is automatically closed to ensure that the start-up control system is functioning properly.

2 Technical Parameter