22/09/19
Introduction to the principle, function and usage of self-closing valve
The self-closing valve is installed on the piping of the low-pressure gas system. When the air supply pressure of the piping is insufficient or pressurized, it is a device that automatically closes and opens manually without using electrical or other external power.
1. Overview of self-closing valve
The self-closing valve is installed on the piping of the low-pressure gas system. When the air supply pressure of the piping is insufficient or pressurized, it is a device that automatically closes and opens manually without using electrical or other external power. The self-closing valve installed at the end of the pipe behind the gas meter and the connection of the hose requires the loss of pressure sealing function.
Second, the basic principle of self-closing valve
The basic principle of the self-closing valve is to magnetize the permanent magnet material according to the design to generate a multi-pole permanent magnet linkage mechanism that has always been remembered, which can recognize the change of the air pressure parameters passing through it, and automatically close the valve and cut off the gas source after exceeding the reliable set value.
3. The function of self-closing valve
The self-closing valve has the functions of automatically closing undervoltage, overvoltage, undervoltage, and manual reset. When the gas stops, the gas supply is abnormal, the hose falls off, etc., it will automatically shut down to prevent leakage;
Automatic shutdown without electricity or external power;
Automatic operation, long-term reliability, no malfunction
Clear working status, easy to troubleshoot
Easy to install and easy to use.
Fourth, the quotation of the self-closing valve (the price comes from the network, for reference only) ) ).
1. Marine valve CB/T3778-1999 sounding self-closing valve
fifty dollars
2. Piping gas self-closing valve, gas on-off valve
60 dollars
Five, the correct use of self-closing valve
After installing the natural gas meter in the user's home. The device at the f end of the gas pipeline is a self-sealing valve.
The white valve consists of an inverted body, a reset button, and a front valve. There are two ways to close the white valve: suction and expansion.
The function of the self-closing valve; it is a reliable device that automatically closes when the gas is abnormal and prevents the continuous output of the gas.
When the gas pipe network stops, the pressure is too high, the gas is exhausted, and the hose falls off, the self-closing yan will automatically shut down.
When the self-closing valve reset knob is in the green line scale, it is a normal gas state. At this time, the user can use the stove, water heater and other burners normally.
When the reset button rod of the self-closing valve is in the state of the red line scale, it proves that the pressure of the gas pipeline is too large, and the self-closing valve automatically closes (the reset button expands at this time), and the self-closing valve is all closed when the pipe network stops, the hose falls off, and the gas leaks. Inhaled and disconnected instead.
Many users are used to closing the pressure of the self-closing valve every time they use natural gas, which is not good. If the self-closing valve is frequently opened and closed, the self-closing valve will lose its function, resulting in gas leakage, which often fails to protect. In addition, there are also users who are hung on the self-closing valve stem or have foreign objects mixed in. In the long run, the self-sealing valve is in a normally open state and loses its reliable protection function, which is a hidden danger. After opening and closing the self-closing valve, the self-closing valve is prone to failure, causing gas leakage and no longer playing a protective role. In addition, some users hang on the self-closing valve stem or mix in foreign objects. For a long time, the self-closing throttle valve is in a normally open state, losing its protection function, causing hidden dangers.
Other information
Contact us
Fax：0576-87331866
Address: Xiaomaiyu Small and Micro Industrial Park, Yuhuan City, Taizhou City, Zhejiang Province
