HXF-3 type flame retardant breathing valve with suction pipe

Overview of HXF-3 type flame retardant breathing valve with suction pipe

The flame retardant breathing valve with suction connection is an essential safety equipment on fixed top storage tanks for crude oil, gasoline, kerosene, light diesel, aromatic hydrocarbons, etc. It can prevent evaporation loss and protect the storage tank from damage when subjected to overpressure or vacuum. It is a safe and energy-saving product that maintains the pressure balance of storage tanks and reduces the volatilization of media. According to the national standard "Fire Protection Design Code for Petrochemical Enterprises", "Fixed top tanks storing Class A and Class B liquids should be equipped with flame arresters and breathing valves". One of the popular products in the market is the breathing valve with a suction connection (flame retardant), which plays a safety protection role in the system. In practical applications, the characteristic type should be selected according to actual needs, and the optimal diameter should be chosen based on the large displacement. It is a new and improved breathing valve that combines the dual functions of a breathing valve and a tank flame arrester.

Working principle of HXF-3 type flame retardant breathing valve with suction pipe

The breathing valve controls the exhaust positive pressure and suction negative pressure of the storage tank by the weight of the positive and negative pressure valve discs. When the pressure of the medium inside the tank is within the control operating pressure range of the breathing valve, the breathing valve does not work, maintaining the airtightness of the oil tank; When the medium is added to the tank to increase the pressure in the upper gas space of the tank, reaching the operating positive pressure of the breathing valve, the pressure valve is pushed open, and gas escapes from the exhalation port of the breathing valve, preventing the pressure inside the tank from continuing to increase; When the medium is extracted from the outside of the tank, causing the pressure in the upper gas space inside the tank to decrease and reach the operating negative pressure of the breathing valve, the atmosphere outside the tank will push open the negative pressure valve disc of the breathing valve, allowing external gas to enter the tank and prevent the pressure inside the tank from continuing to decrease, balancing the pressure inside and outside the tank to protect the safety device of the storage tank.

A breathing valve with suction connection (flame retardant) is a ventilation and flame retardant device installed on a fixed top tank, which can reduce oil evaporation loss, control tank pressure balance, and control flames. It can automatically adjust the pressure inside and outside the storage tank. The breathing valve is equipped with an electrostatic protection device, which keeps the valve at the same potential as the tank at all times. There are many types of breathing valves, each with its own unique performance and characteristics. When selecting, it is important to consider objective factors such as the conditions that their characteristics meet and whether they can achieve good operating results.

Performance and characteristics of HXF-3 type flame retardant breathing valve with suction pipe

The shell of the breathing valve with suction connection (flame retardant) is made of stainless steel, cast steel, and aluminum alloy, with a compact structure, strong flame retardant performance, large ventilation capacity, small leakage, corrosion resistance, low temperature resistance, frost resistance, easy maintenance, safety and convenience; The valve disc is made of PTFE material, which is resistant to low temperatures and has good anti freezing performance; The flame retardant plate is made of stainless steel material, which has excellent flame retardant performance.

Structural diagram of HXF-3 type flame retardant breathing valve with suction pipe

Technical parameters of HXF-3 type flame retardant breathing valve with suction pipe

Main appearance and installation dimensions of HXF-3 type flame retardant breathing valve with suction pipe

Ordering Notice:

Please specify detailed parameters such as product name, nominal diameter, pressure rating, material, flange standard, and operating pressure when placing an order. The above product dimensions are standard universal models. If you need other specifications, non-standard product design drawings and detailed parameters, or if the environment is very important for use and complex, please contact our company for our experts to review and serve you wholeheartedly.

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