There are several forms of leakage from chemical pipeline valves

It is often referred to as external leakage and internal leakage. Leakage is the process of medium flowing through the valve body to the outside of the valve. Internal leakage means that after the medium passes through the valve diameter, it is not blocked by the valve disc, valve plate, etc. Flow in the direction of the outlet.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Gland seal leakage, stuffing box leakage, valve body connection leakage, gasket leakage, internal leakage.

The easiest way to check for leaks in LPG pipes or valves is to apply soapy water.

After mixing the soap and water, apply the soapy water to the gas pipe where it needs to be checked, if it bubbles, there is a gas leak. If there is a leak, you should close the cylinder valve, extinguish all fires, open doors and windows, do not touch any electrical switches, and call the police outdoors**119.

In the event of a fire, do not panic and take effective measures to extinguish the fire. Cut off the air source first, if it is a leak from the pressure regulator, hose or stove**, the cylinder angle valve should be closed quickly, and the flame can be extinguished by itself. If there is an air leak at the angle valve of the cylinder**, you can use a wet towel or wet quilt to cover the ignition point tightly to isolate it from the air and extinguish the flame.

After the flame is extinguished, close the angle valve, quickly move the cylinder to a safe place for a full inspection, and dispose of it properly.

What behaviors must be eliminated for the safe use of liquefied gas cylinders:

1. Do not knock or collide with the cylinder.

2. When the bottle valve is frozen, it is not allowed to bake the cylinder with fire or dump the residual liquid without permission.

3. The cylinder shall not be close to the heat source, coal stove and other open flame furnaces and gas furnaces in the same room, and will be ignited once the gas leaks.

4. In summer, it is necessary to prevent sunlight exposure, so that the internal pressure of the cylinder increases and accidents occur.

5. The gas in the cylinder must not be exhausted, and there must be residual pressure bending.

6. Do not use two cylinders to pour gas without permission, which is prone to leakage of the interface or the rupture of the hose.

7. Do not dismantle or move the pressure reducing valve, angle valve and other equipment without permission, which is easy to cause air leakage. If a valve is found to be out of order, it must be replaced immediately.

Check for LPG.

The incorrect method of leaking a pipe or valve is: sniff with your nose, test with fire, and test with reagent.

Check the state history of liquefied gas tanks.

Safe method for valve leakage:

Liquefied gas tanks are generally detected with soap liquid. Place soap or laundry detergent.

Mix water into a soap solution and apply it to the gas pipe and gas meter in turn.

Hose and switch. If the soap leaks, it will be blown out of the foam by the leaking gas, and when you see the foam increasing, it is a sign that there is a leak in that part. After the gas leakage is found, the gas leak can be temporarily bandaged with adhesive tape, and then the gas company will be notified to send someone to repair it.

If you can smell the gas smell but do not find the leakage after inspection, you should immediately notify the liquefied gas tank company to come for maintenance. It can also be detected by seeing, hearing, touching, and smelling. (Note: Do not use an open flame to check for leaks.) ）

Sense of smell - household gas is mixed with odorants, and when it leaks, it will leave a smell on the stove.

Vision – Gas leakage can cause mist white smoke to form in the air.

Auditory – there will be a "hissing" sound.

Tactile - the hand is close to the leaked loophole book state search, there will be a cool feeling.

Valve leakage: refers to the fact that the valve is not closed tightly due to the erosion of the medium, even if the valve screw is tightened in place, because there is still a gap between the valve core and the valve body, the medium can still flow through.

Valve leakage: Generally refers to the loose sealing between the valve and the connecting flange or connecting thread, which causes the medium to flow out of the connection sealing surface, or the leakage of the medium caused by the loose sealing between the valve stem and the gland, or the external leakage caused by trachoma on the valve body blank, and the external leakage caused by the wear of the valve body due to the erosion of the medium punching and balancing.

The valve is a mechanical device that controls the flow, flow direction, pressure, temperature, etc. of the flowing fluid medium, and the valve is the basic component of the pipeline system. Valve fittings are technically the same as pumps and are often discussed as a separate category. The valve can be operated manually or with a handwheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow rate of the fluid medium.

You can use soapy water to empty the matter, mix the soap and water, and apply the soapy water to the place where the gas pipeline needs to be checked.

Professional equipment testing, you can contact the gas company, they will have professionals with testing equipment for inspection.

If there is a gas alarm at home, you can place the alarm near the pipe interface that needs to be checked for inspection, and the alarm will alarm if there is a problem.

You can use soapy water, mix soap and water, and apply soapy water to the place where the gas pipeline needs to be checked, if it bubbles, it is a leak.

Professional stupid return equipment testing, you can contact the gas company, they will have professionals with testing equipment for inspection.

If there is a gas alarm at home, you can place the alarm near the interface of the pipeline that needs to be checked for inspection, and the alarm will be reported to the hungry alarm if there is a problem.

You can use soapy water, mix soap and water, and smear the soapy water next to the tomb in the place where the gas Qiyu pipeline needs to be checked, if it bubbles, there is a gas leak.

You can also use professional equipment for testing, you can contact the gas company, and they will have professionals with testing equipment for inspection.