Characteristics and performance of the breathing valve:

The valve body of the breathing valve can withstand a water pressure of 0.2Mpa without osmosis and deformation. The low temperature resistance of the breathing valve is greater than 70% in air and the lowest temperature is -30 °C. After 24 hours of freezing, the valve opening pressure meets the working pressure requirement (allowing the pressure difference is plus or minus 20pa).

When the valve disc component of the GTQ type snorkel is operated, the sensitivity is high, and the seal is ensured after the operation is completed. There is enough space in the valve to ensure the ventilation of the tank. Before the breathing valve reaches the working pressure: the nominal diameter is ≤150mm, the leakage is ≤0.04m3/h; the nominal diameter is ≥220mm, the leakage is ≤0.4m3/h; when the breathing valve reaches the working pressure: the valve disc is immediately Open to ensure normal ventilation requirements for the tank.

Main specifications / special features:
Features and performance:
The new pipe flame arrester is made of cast iron, cast steel, stainless steel and aluminum alloy with good corrosion resistance. The valve disc and the valve sealing ring are made of stainless steel tetrafluoroethylene. Low temperature resistance and good antifreeze performance. The valve is a ventilation device installed on the fixed top tank to reduce the evaporation loss of the oil and control the pressure of the tank. The valve has large ventilation, small leakage, corrosion resistance and good antifreeze performance. It can automatically adjust the pressure inside and outside the oil storage tank.

The gas flame arrester has a simple structure, light weight, easy maintenance and convenient installation. The hydraulic test is qualified. Low temperature and antifreeze passability: No pressure is applied to the pressure valve disc, vacuum valve disc and seal ring after being operated at -42 °C for 2 hours. Fully meet the standard requirements. Continuous operation at normal temperature of 36 ° C for 72 hours, 10,000 operations, pressure valve disc, vacuum valve disc and guide rod contact surface without any signs of wear and bruise, the guide rod lift sensitive and no jam.