As the name suggests, a China check valve has a checking role in a system. To be more exact, it makes sure that the flow of the liquid or gas that passes through the pipes goes through only in one direction. This is very important in some systems where a reverse flow is possible but it is not desirable. The way in which such a valve is built can differ very much. Every check valve manufacturer can have his own models. What remains the same is the principle through which it works.

The most used model of this valve has a disk that covers the pipe. The pressure applied by the fluid has the role of opening or closing the valve. When the fluid travels in the wanted direction, it will apply pressure on the disk which will rise and let the liquid flow. If the flow reverses, the valve immediately closes and stops the fluid from moving backward. Due to this mechanism, this type of valve works automatically.

Another ability that a check valve has, is to control the pressure drop. By adjusting the pressure needed to open it, you can control the drop in the pressure with which the fluid leaves the valve. This can be very useful in systems that need different pressures in different segments of the pipes. The single inconvenience is the fact that in many models you can’t control the pressure through a stem and in many of these cases, you need to stop the system to make the adjustment.

What Systems Need a China Check Valve?

In most systems, a China check valve  has the role of preventing damage produced by the backflow of the fluid. It can be used in many applications and this article will present some common examples of such uses:

- Sewage. It is the best solution to prevent flooding. Unfortunately, there can be many reasons for which sewage can clog. If there is no check valve in these situations, a flood is inevitable and it can cause much damage.

- Boiler. In this system when the pressure inside becomes big enough the valve opens and the fluid leaves, when the pressure gets lower enough the valve closes. The pressure is needed to accomplish some processes but if it is too much, then it may break the system. For this reason, the check valve has the role of keeping the pressure under a certain threshold. The ones used in such systems can have an override method which lets the operator close the valve regardless of the pressure accumulated.

- Spray devices. The model used in these types of systems is usually a ball check valve. The pressure within the container keeps the ball fixed on its seat which prevents the fluid from getting out. When the button is pressed, the ball is pushed out of its seat and the fluid can flow out of the container.

As you can see, there are many different uses for these valves. Some are very important while others just increase the convenience. If you want to find if your systems need a check valve then the best option is to speak with a check valve manufacturer. His expertise will benefit you much more than an article because he can offer you information personalized on your own systems.

Why Should You Ask for Guidance from a Check Valve Manufacturer?

By speaking and asking for information from a  check valve manufacturer you can achieve many things at once. The first and most important benefit you will get is the fact that you will be able to observe his willingness to help you. The more open he is, the more you can see how much he cares about his clients. This will give you an idea about the quality of his products. The second benefit that has significant importance is the information you can learn about your system and tips you get from the manufacturer. You may learn how to improve it or find better valves that will increase its efficiency.

It is in your best interest to speak with at least one manufacturer before you order any China check valve. All manufacturers have more than one model for them and you may even find one that is personalized for your type of system. You can also find more information about all the valves they create on their site and there you can also see how much they try to help their clients.