QHXF-2000 all-weather antifreeze breathing valve

QHXF-2000 all-weather antifreeze breathing valve

First, product features:

1, QHXF-2000 all-weather antifreeze breathing valve is an important ventilation device installed on the fixed roof tank (can be used with the flame arrester) mainly to reduce the evaporation loss of oil, control the pressure in the tank, and protect the safety of the storage tank.

2. The valve disc of the breathing valve is set in parallel type (the two channels are separated), with the characteristics of large ventilation, small leakage, strong corrosion resistance, etc., and is connected with the safety device of electrostatic ground wire and tank body to maintain equal potential.

3, valve disc structure: Type I is a polytetrafluoroethylene film combination of air cushion valve disc; Type II adopts F-46 new materials to develop and shape the pressure plastic valve disc, durable, anti-freezing performance is outstanding, is suitable for cold areas of the name of the "all-weather" new products.

Ii. Product Overview:

QHXF-2000 all-weather antifreeze breathing valve is a ventilation device installed on the fixed roof tank to reduce oil evaporation loss, control tank pressure and prevent external flame

The role of. The valve has the characteristics of large ventilation volume, small leakage, corrosion resistance, and electrostatic grounding line, so that the valve and the tank to maintain equal potential. The valve has antifreeze performance and is suitable for

Cold areas.

Third, product application:

The all-weather antifreeze breathing valve is a ventilation device installed on the fixed roof tank, which can reduce the evaporation loss of oil products, control the pressure of the storage tank and prevent the external flame from entering. It makes full use of the pressure capacity of the oil tank itself to reduce oil vapor emissions, and its principle is to use the weight of the valve disc to control the positive pressure of the oil tank and the negative pressure of the suction.

Four, the working principle:

The all-weather antifreeze breathing valve makes full use of the pressure capacity of the oil tank itself to reduce oil vapor emissions, and its principle is to use the weight of the valve disc to control the positive expiratory pressure and negative inspiratory pressure of the oil tank. When the pressure of the gas in the tank is within the control pressure range of the mechanical breathing valve, the breathing valve does not act to maintain the tightness of the oil tank; When the pressure of the gas space in the tank rises to reach the positive pressure controlled by the breathing valve, the pressure valve is pushed open, and the gas escapes from the tank, so that the pressure in the tank does not continue to increase; When the pressure of the gas space in the tank drops and reaches the controlled negative pressure of the breathing valve, the atmosphere outside the tank will open the vacuum valve and enter the tank, so that the pressure in the tank will not continue to drop.