LPG cylinder pressure reduction issue
Thread Content
When the stove is not using LPG gas, there is usually no problem as long as the pressure regulator on the LPG cylinder is not turned off and a hose is used to connect it to the stove. Logically, once there is no flow, the pressure inside the hose should be equal to that inside the cylinder; at this point the pressure should be high, so why can the hose still withstand it? I would like to ask everyone, why is this? Thank you
1. The pressure inside the hose is not equal to the pressure inside the cylinder； 2. When the pressure inside the hose reaches the set pressure of the pressure reducing valve, the valve will definitely close when there is no flow ； 3. The pressure reducing valves for gas are generally self-acting; their shut-off pressure = spring preload + set pressure of the pressure reducing valve (slightly higher).
Once the outlet pressure of the pressure reducing valve reaches the set pressure, it shuts off automatically internally. In some types of pressure reducing valves, the internal seal may fail in case of a malfunction, resulting in the valve failing to perform its pressure reduction function