Introduction To Several Common Valves In Water Supply And Drainage Systems

The water supply and drainage system is widely used in our daily life and is also an important part of the installation project. There are many types of pipes in the water supply and drainage system, and the valves are also different. Today, the editor will take you to understand several common valves in the water supply and drainage system.

Stop valve: The stop valve, also known as the stop valve, is the most widely used valve. During the switching process, the friction between the sealing surfaces is very small, it is relatively durable, easy to manufacture, and convenient to maintain. It is not only suitable for medium and low pressure pipelines, but also for high pressure pipelines. When installing the stop valve, pay attention to the flow direction of the medium and follow the principle of "low in and high out".

Lined Gate Valve: A valve that uses the lift of the gate to control the opening and closing. When the fluid passes through the valve, the direction remains unchanged and is widely used in hot and cold water pipeline systems. The gate valve can only be fully opened or fully closed, and cannot be adjusted or throttled.

Pressure reducing valve: A valve that reduces the inlet pressure to a certain outlet pressure and automatically maintains the outlet pressure stable by relying on the energy of the medium itself. The pressure reducing valve is a throttling element that can change the local resistance.

Check valve: Also known as a single-flow valve or a non-return valve, it is a valve that automatically opens and closes according to the pressure difference before and after the valve disc. The medium is only allowed to flow in one direction and is used in pipelines that do not allow the medium to flow back. It is often used as a bottom valve for pumping devices.

Butterfly valve: also called flap valve, is a simple regulating valve, mainly used to cut off and throttle pipelines, and is used for on-off control of low-pressure pipeline media. It can be used to control fluids such as air, water vapor, various corrosive media, mud, liquid metal, radioactive media, etc.

Diaphragm valve: It is a special form of stop valve. Its opening part is a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the drive part. It is widely used in various fields for the regulation of acidic and corrosive media.

Ball valve: It is divided into three types: pneumatic ball valve, electric ball valve, and manual ball valve. It is mainly used to cut off, distribute media and change the flow direction of media in pipelines, and is most suitable for use as a switch or stop valve.