How to solve the lock up of natural gas pressure reducing valve

The high-pressure compressed natural gas comes out of the gas storage cylinder, and after being filtered by the natural gas filter, it enters the high-pressure pressure regulator through the high-pressure solenoid valve, and the opening and closing of the high-pressure solenoid valve is controlled by ECM, and the function of the high-pressure pressure reducer is to adjust the pressure to 7bar-9bar through decompression heating of the high-pressure compressed natural gas (working pressure 200bar-30bar). In order to prevent the pressure reducer from freezing, the engine coolant is drawn from the engine to the pressure reducer to heat the gas. The depressurized natural gas enters the electronically controlled pressure regulator, which is used to accurately control the amount of natural gas injection according to the operating conditions of the engine.

Natural gas and air are fully mixed in the mixer, enter the engine cylinder, and are ignited by the spark plug for combustion, the ignition time of the spark plug is controlled by the ECM, the oxygen sensor monitors the oxygen concentration of the exhaust gas after combustion in real time, and calculates the air-fuel ratio, and the ECM corrects the amount of natural gas injection in time according to the feedback signal of the oxygen sensor and the control MAP.

Method:When the pressure is insufficient, residents should not force the gas pipeline safety self-closing valve to be opened by themselves, and it is best to contact the natural gas company to solve the problem.

Reason:It is understood that the gas pipeline safety self-closing valve is a valve that is automatically closed under abnormal conditions of gas supply, and is an automatic protection device, which cannot be operated manually as a switch valve, and the green scale line should be exposed under normal conditions.

If there is a gas failure at home, you should first check whether the reset button of the self-closing valve is in the normal position, and after the troubleshooting air supply returns to normal, the reset button should be restored to the green tick mark position before normal use.

Self-closing valves

Pipeline gas self-closing valve, referred to as self-closing valve, is installed on the pipeline of low-pressure gas system, when the pipeline gas supply pressure is underpressure or overpressure, without electricity or other external power, it can be automatically closed and must be opened manually.

The gas pipeline self-closing valve may be small, but it is also a delicate component. Therefore, there are certain requirements for use, and frequent manual operation will reduce its sensitivity and lose its safety protection effect. After the automatic shutdown occurs, first ask about the gas ** situation, if it is an inspection, wait for the gas supply to resume after the inspection and then manually turn it on.

If it is an air leak, it is necessary to find the source of the air leak and repair it in time.

Natural gas self-closing valve can not be opened solution:

1. When the natural gas self-closing valve can not be opened, the first thing to determine the direction of opening the natural gas self-closing valve, clockwise rotation is to close the valve, counterclockwise rotation is to open the valve, there will be two English abbreviations on the natural gas self-closing valve, where S stands for SHUT=off, O stands for open=open.

2. When the natural gas self-closing valve is a ball valve, there are only two options: fully open or fully closed. Turning clockwise is to open the valve, turning counterclockwise is to close the valve, for this kind of valve only need to turn the ball valve clockwise.

3. When the shape of the natural gas self-closing valve is like a wrench, the valve is closed when the wrench and the pipe are crossed, and the valve in a vertical state is open.

4. There is a red plastic button at the upper end of the natural gas meter, this red plastic button is the button that automatically closes the valve urgently, when the gas consumption exceeds a certain value, it will be considered that the natural gas is leaking and automatically closed, opening the red plastic button is also very simple, accounting for the transparent plastic cover above the button, after opening, grab the red button and pull it up to open it.

2. Call ** to the gas company for repair, don't repair it yourself, there are potential safety hazards, and it is not allowed. The gas self-closing valve is a safety device that automatically closes in the case of abnormal gas supply, and it is an automatic protection device on the gas pipeline, and the valve cannot be opened and closed manually.

Hope it helps.

Question: What is the matter if the gas is there and it can't be pulled.

Isn't it the few.

Wait a little 4, there is a red plastic button at the upper end of the natural gas meter, this red plastic button is the button that automatically closes the valve urgently, when the gas consumption exceeds a certain value, it will be considered that the natural gas is leaking and automatically close, open this.

You look at these four.

1.If it's a manual valve. Just pull the main valve directly.

2.If it is an automatic valve, you need to find the battery compartment and remove the battery inside. Then wait ten minutes before putting the battery back on. The valve opens automatically.

The solution for automatic closing of natural gas self-closing valve is as follows:

The solution is divided into two situations: when the gas self-closing valve is shut down, or when the pressure generated is large, it will automatically close, so as to prevent leakage, which is normal and does not need to be operated.

When the reset button lever is in full, the old code stops the gas, or the gas hose falls off, then the self-closing valve will also be automatically closed, and it is necessary to contact professionals to deal with it in time.

Attention should be paid to the use of gas pipeline self-closing valves.

When the ball valve behind the gas pipe self-closing valve behind the stove is closed under normal air pressure, manually pull the handle up and hold it for 3 to 5 seconds. The valve is then released and left open.

When the gas pipeline self-closing valve exceeds the red line, it means that the valve is in a state of overpressure, and the ball valve at the rear end needs to be closed in time, and then contact the gas company for treatment. When the fault is dealt with, the ball valve can be restored to the closed position, and then it can be opened normally.

If the gas pipeline self-closing valve is in the closed position, check whether the hose between the valve and the stove has fallen off or cracked, and if not, check whether the inlet pressure is too low. Only after the fault has been dealt with, can the valve be opened normally.

Summary. 1. There is generally a knob on the gas tank pressure reducing valve, which can be adjusted along the counterclockwise or clockwise direction, if the clockwise is to increase the pressure of the gas, then the counterclockwise is to reduce its pressure.

2. If you find that the pressure of the pressure reducing valve is abnormal, you can restore its pressure to normal by rotating the screw plug above it counterclockwise, and you can usually find a pointer pressure gauge on its surface, as long as you adjust it to the green field, it can return to normal, but if it is in the red field, it is very dangerous.

Kiss. 1. There is generally a knob on the gas tank pressure reducing valve, which can be adjusted along the counterclockwise or clockwise direction, if the clockwise is to increase the pressure of the gas, then the counterclockwise is to reduce its pressure. 2. If you find that the pressure of the pressure reducing valve is abnormal, you can restore its pressure to normal by rotating the screw plug above it counterclockwise, and you can usually find a pointer pressure gauge on its surface, as long as you adjust it to the green field, it can return to normal, but if it is in the red field, it is very dangerous.

Do not open the natural gas valve without authorization after it is locked, otherwise it is easy to cause accidents. Natural gas valves use burglar valves, which lock when closed and must be opened with a key (a specific tool). It is recommended to call the natural gas company**, ask for professional help, and do not violently unlock the lock to avoid causing safety accidents.

Do not open the natural gas valve without authorization after it is locked, otherwise it is easy to cause accidents. Natural gas valves use burglar valves, which lock when closed and must be opened with a key (a specific tool). It is recommended to call the natural gas company**, ask for professional help, and do not violently unlock the lock to avoid causing safety accidents.

1. Replace the solenoid valve The gas stove can not turn off the fire, this situation shows that the pipeline of the gas stove is through, the main pipeline of the gas stove is not blocked, under normal circumstances, the flameout is closed by the solenoid valve, and the solenoid valve may be blocked due to rust or other faults, resulting in the solenoid valve being blocked, and the fire cannot be turned off, and the solenoid valve needs to be replaced.

Second, the maintenance switch of the natural gas is broken, resulting in the user in the implementation of the operation of turning off the fire, can not drive the normal switch of the gas stove, this is, it is necessary to contact the maintenance master to repair the switch, when waiting for the maintenance master, in order to avoid accidents, you can turn off the gas tank.

After the burning raw materials are cut off, the fire of the gas stove will also be extinguished.

3. Maintain normal ventilation You can check whether the wildfire is stable, it may be because the fire separator of the gas stove is rusty too much, the rust blocks the vent, affecting the ventilation, and the gas stove can not turn off the fire, you can clean up the rust inside the fire separator of the gas stove and maintain normal ventilation.

1. Close the on-off valve in front of it and open the valve in the back; 2. Turn the adjusting screw to the top position; 3. Close the switch valve at the back; 4. Then slowly open the front valve; 5. Rotate the screw clockwise to adjust the pressure to the required size; 6. After adjustment, lock the nut tightly and open the valve at the back.

Summary. Hello dear, you can do this if you accidentally lock the gas main valve:1

Before closing the gas main valve, the gas pipeline should be checked for leakage, and if there is a leak, the alarm should be called immediately, and measures should be taken to eliminate the leakage in time. 2.If there is no leakage, you can try to gently unscrew the gas main valve with a wrench, and if it can't, you can try lubricating it with lubricant and then unscrewing it again.

3.If you still can't unscrew it, you can call in a professional to help solve the problem.

Hello dear, you can do this if you accidentally lock the gas main valve:1Before closing the gas main valve, the gas pipeline should be checked for leakage, and if there is a leak, the alarm should be called immediately, and measures should be taken to eliminate the leakage in time.

2.If there is no leakage in the rotten shed, you can try to use a wrench to gently unscrew the gas main valve, if it can't be opened, you can try to lubricate it with lubricant, and then unscrew it. 3.

If you still can't unscrew it, you can call in a professional to help solve the problem.

How to turn on the gas when it is turned off.

How to open the natural gas shut-off valve "After rotating the valve handle of the natural gas pipeline counterclockwise, the pipeline will be parallel to the void mountain between the handles, so that the natural gas shut-off valve will be opened in the hail.