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Why install a pressure reducing valve on the gas cylinder?

2023年03月21日

1. Pressure reducing valve


The pressure reducing valve for household gas cylinders, also known as the low-pressure valve, is a standard name for a household bottled liquefied petroleum gas regulator. It is applied to thousands of households and is closely related to our life safety.

A pressure reducing valve is a valve that adjusts the inlet pressure to a desired outlet pressure, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure.

From the perspective of fluid mechanics, a pressure reducing valve is a throttling element that can change local resistance. By changing the throttling area, the flow rate and kinetic energy of the fluid are changed, resulting in different pressure losses and achieving the purpose of pressure reduction.


2. The function of the pressure reducing valve


The pressure reducing valve for household gas cylinders, also known as the low-pressure valve, is a standard name for a household bottled liquefied petroleum gas regulator. It is applied to thousands of households and is closely related to our life safety.

A pressure reducing valve is a valve that adjusts the inlet pressure to a desired outlet pressure, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element that can change local resistance. By changing the throttling area, the flow rate and kinetic energy of the fluid are changed, resulting in different pressure losses and achieving the purpose of pressure reduction.


3. Classification of pressure reducing valves


Low pressure valve, medium pressure valve, high pressure valve


Taboos for using pressure reducing valves


The pressure in the gas cylinder is relatively high. If it is directly connected to the stove, it will cause unstable combustion of the stove flame; Secondly, connecting the stove directly with high pressure can create safety hazards, and excessive pressure can easily cause leakage during combustion; Thirdly, a large amount of gas rushes out to produce a powerful flame, which greatly wastes energy (large flame combustion of household gas is completely unnecessary, and partially burned gases are harmful to human health); The fourth is that the high-pressure valve has high pressure and fast flow rate, which is highly likely to release liquefied gas into the air if it does not ignite. If ignited again, it is easy to ignite the mixed gas and cause an explosion, which in serious cases can indirectly lead to the explosion of liquefied gas cylinders.


Everyone must pay attention that the pressure reducing valve for household gas stoves must be a legitimate one, labeled with JYT-0.6, with an inlet pressure of ≤ 1.56Mpa and an outlet pressure of 2800pa ± 500pa, and must be non adjustable.


The pressure reducing valves on the market are diverse and of varying quality. So when buying a pressure reducing valve, we must be cautious and buy a qualified pressure reducing valve from a reputable manufacturer to prevent being deceived into buying counterfeit and inferior products.


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