In urban, construction and enterprise water supply and drainage projects, medium and low pressure valves are widely used, especially low-pressure large-diameter valves (low-pressure valves refer to valves with nominal pressure PN ≤ 1.6Mpa). How to distinguish between low-pressure valves and medium-pressure valves / which is safer / the same as the pipe? This issue gives you a detailed answer!
1、 How to distinguish between low pressure valve and medium pressure valve
1. Pressure and flow are different
High output pressure and large flow of medium pressure valve; The low-pressure valve has low output pressure and small flow, which can control the tank pressure and release the gas little by little.
2. Different uses
Low pressure valve is generally used for domestic gas stove or water heater, and medium pressure valve is used for medium and high-power gas stove.
3. Different safety aspects
Due to the high pressure and fast flow rate, the medium pressure valve is likely to be damaged due to its inability to release the gas into the air. The low-pressure valve can control the pressure of the tank and release the gas bit by bit. Even if you unscrew the adjusting screw, the gas will not be very large.
2、 Which is safer, low pressure valve or medium pressure valve
@Anonymous user
The low-pressure valve used for fierce fire stove is very dangerous, because it can not meet the requirements of fire, so it is likely to cause fire. Medium pressure valve or high-pressure valve can be used. If the low-pressure valve is used for ordinary stoves, events will also occur when the pressure is too high DC12V、DC24V。 Low nominal pressure, which needs to be selected according to the design pressure of the pipeline, conventional PN16. If the low-pressure valve is selected under high pressure requirements, it is unsafe.
@Anonymity
Domestic gas stoves generally use low-pressure valve, which is generally 2800pa. Medium pressure is used by commercial stoves, and high-pressure valve must not be used. General gas products have a corresponding pressure range. If they are used beyond the pressure range, they can’t light a fire, and serious safety accidents will occur.
3、 Is the low pressure valve the same as the medium pressure valve pipe
Generally, the dividing points are 1.6Mpa and 10.0MPa. The low-pressure pipeline is the one with the design pressure less than or equal to 1.6Mpa, the medium pressure pipeline is the one with the design pressure greater than 1.6Mpa and less than or equal to 10.0MPa, and the high-pressure pipeline is the one with the design pressure greater than or equal to 10.0MPa.
Pressure pipeline refers to all pipelines that bear internal pressure or external pressure. Regardless of the medium in the pipeline, some valve pressures can also be distinguished according to this
1. Low pressure pipeline engineering pressure < 1.6Mpa
2. The pressure of medium pressure pipeline works is 1.6-6.4mpa
3. High pressure pipeline engineering pressure > 10MPa.
Post time: Apr-20-2022
