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Breathing valve
Product classification of Meiyan One Pump Valve
- ShangHai Meiyan Yi Pump & Valve Co.,LTD.
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
Breathing valve
Breathing valves are usually installed at the top of storage tanks to solve the problem of positive or negative pressure gas entering and exiting the tank. After installing and using breathing valves in storage tanks, the liquid entering and leaving the tank will not be obstructed by the positive or negative pressure of the tank. When the liquid is injected into the tank, a large amount of gas is exhaled (called positive pressure). When the liquid inside the tank is exported, it must be sucked into the tank from the outside air (called negative pressure). If the breathing valve automatically closes when the work stops, it will not leak the liquid and gas inside the tank, which ensures the quality of the liquid inside the tank, especially volatile gases such as gasoline are not easily lost due to volatilization. Shanghai Meiyanyi Pump Valve has been a manufacturer of breathing valves for many years, with reliable quality. Users should pay attention to the safety of using the breathing valve and check whether the guide rod and valve disc of the breathing valve are flexible before use. And it is necessary to regularly (within 6 months) check whether the positive and negative breathing discs of the breathing valve are flexible, and whether the contact surface of the breathing valve disc is damaged. If there is any damage, it should be repaired immediately. After the maintenance is completed, the breathing valve can only be put back into use if everything is normal. Breathing valves are mainly divided into various models and specifications such as single breathing valves, single suction valves, all-weather breathing valves, fire-resistant breathing valves, explosion-proof breathing valves, etc. The following are also products and pictures of flame arresters, ventilation caps, etc. that are usually used together with breathing valves for your reference and selection.
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Single Call Valve
Single call valve is one of the main equipment on storage and reaction equipment pipelines for various media that undergo thermal expansion and contraction with the change of weather temperature during storage and reaction processes. Single call valves, fire-resistant single call valves, and explosion-proof single call valves are safe and energy-saving products that maintain the pressure balance of storage tanks, ensure that storage tanks or reactors are damaged when pressure increases, and reduce the volatilization and loss of media inside the tanks. When the pressure inside the storage tank or reaction vessel increases to the set value, the exhalation valve disc will automatically open, exhaling gas from the storage tank or reaction vessel to the outside, ensuring the safety performance of the storage tank while exerting pressure reduction function. The operating pressure range of the single call valve produced by Shanghai Meiyan Yi Pump Valve: Type A: -295pa (-30mmH2O)/+355pa (+36mmHg); Type B: -295pa (-30mmH2O)/+980pa (+100mmH2O); Type C: -295pa (-30mmH2O)/+1750pa (+180mmHg).View details>>
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Single suction valve
Single suction valve is one of the important devices for pipeline storage equipment of various gases and liquids that are prone to thermal expansion, contraction or volatility during storage. It is a safe and energy-saving product that maintains the pressure balance of the storage tank, ensures that the storage tank or reaction kettle is damaged when negative pressure is generated when the pressure decreases, and reduces the volatilization and loss of the medium inside the tank. When the pressure inside the storage tank or reactor decreases to the set value, the suction valve disc automatically opens to suck in gas from the atmosphere, ensuring the safety performance of the storage tank while exerting the suction function. The valve discs of the single suction valves, flame retardant single suction valves, and explosion-proof single suction valves produced by Shanghai Meiyan Yi Pump Valve are made of polytetrafluoroethylene material, which has the advantages of low temperature resistance, antifreeze, etc. The valves are equipped with electrostatic output devices to maintain equal potential with the tank body at all times. After testing and inspection, all technical indicators fully comply with the standards of various national ministries and commissions.View details>>
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Explosion proof Breathing Valve
Explosion proof breathing valve refers to a breathing valve whose structural design has a certain explosion-proof function, mainly achieved through flame arresters and explosion-proof flame retardant corrugated discs. The breathing valve and flame arrester are combined into one, and the respiratory port of the explosion-proof breathing valve has added the core component of the flame arrester: the explosion-proof flame arrester corrugated disc. This design not only retains the basic function of the breathing valve, but also ensures the explosion-proof safety performance of the storage tank. When gas passes through the breathing valve, the explosion-proof flame retardant corrugated disc can effectively prevent the fire source from entering the storage tank, thereby preventing explosion. The explosion-proof breathing valve produced by Shanghai Meiyan Yi Pump Valve is particularly suitable for flammable and explosive petrochemical materials such as gasoline, kerosene, diesel, aromatic hydrocarbons, sulfur, and air. It has the advantages of compact structure, large ventilation, small leakage, good sealing performance, small size, light weight, and easy maintenance and cleaning replacement.View details>>
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Fire breathing valve
The main function of a fire breathing valve is to provide both breathing and fire protection on pipeline equipment. Fire breathing valves can prevent external flames from entering pipeline equipment. The structural design of breathing valves includes a flame arrester part, which functions to prevent the spread of flames in gas pipeline systems, thereby protecting low-pressure storage tanks storing flammable media. The fireproof breathing valve produced by Shanghai Meiyan Yi Pump Valve can effectively control the pressure of storage tanks and pipelines. Its main working principle is that the breathing valve maintains the pressure balance inside the storage tank by releasing positive and negative pressure, preventing safety problems caused by high or low pressure in the storage tank. Fire breathing valves are particularly suitable for flammable and explosive petrochemical materials such as gasoline, kerosene, diesel, aromatic hydrocarbons, sulfur, and air.View details>>
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all weather breathing valve
The all-weather breathing valve refers to a breathing valve that can automatically operate around the clock without relying on any other energy. The working principle of the all-weather breathing valve is to control the exhaust and suction process of the storage tank through a spring limit valve plate. When the pressure inside the tank rises to a constant value, the pressure valve opens and the gas is discharged through the exhalation valve. When the pressure inside the tank drops to a certain vacuum degree, the vacuum valve opens and the external gas enters the tank through the suction valve, thereby maintaining the pressure balance inside and outside the tank. This design not only ensures the safety of the storage tank, but also reduces the volatilization loss of the medium. The all-weather breathing valves produced by Shanghai Meiyan Yi Pump Valve are generally installed on the top of fixed tanks to control the pressure of the storage tank by reducing oil evaporation loss and preventing damage to the storage tank caused by overpressure or vacuum inside the tank.View details>>
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Flame Arrester
Flame arresters are one of the main accessories of pipeline equipment for flammable and explosive media. Their working principle is based on the principle that flames extinguish due to heat loss when passing through narrow pores of thermal conductors. When the flame passes through the small channels of the flame retardant element, the heat loss gradually increases, resulting in a decrease in combustion temperature and flame propagation speed. When the channel size decreases to a certain value, the heat loss of the pipe wall is greater than the reaction heat, and the flame cannot continue to propagate and is extinguished. The flame retardant layer structure of the flame arrester produced by Shanghai Meiyan Yipump Valve comes in various forms, including gravel type, metal wire mesh type, or corrugated type. Widely used between high-temperature equipment that is prone to fire and explosion, pipelines that transport flammable liquids, and storage containers and pipelines for flammable gases and liquids, as well as the venting ends of equipment.View details>>
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Fire resistant breathable cap
The main function of the flame arrester breathable cap is to prevent external flames from entering equipment or pipelines containing flammable and explosive gases, as well as to prevent flames from spreading between equipment or pipelines. The design principle of the flame arrester breathable cap is to use the principle of extinguishing flames due to heat loss when they pass through narrow pores in thermal conductors. Fire blocking breathable cap is a safety device used to prevent flames from spreading outward. It is composed of a solid material (flame retardant element) that can pass through gas and has many small channels or gaps. The gap or channel of the flame retardant element is required to be as small as possible. Therefore, when the flame enters the flame retardant breathable cap, it is divided into many small flame flows by the flame retardant element. Due to heat transfer (gas is cooled) and wall effect, the flame flow is quenched, while air can still pass through normally.View details>>
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
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