Valves for Liquids containing Solids in Suspension

Valves are used to control the flow of fluids in pipelines. They are important parts in many industrial uses. But when solids are suspended in the stream being moved, choosing the right type of valve becomes extremely critical. Solids in suspension can jam valves, cause erosion and abrasion, and even cause valves to fail. In this piece, we're going to discuss about the best types of valves for fluids that have solids in them.

Different kinds of valves for fluids with suspended solids

Diaphragm Valves

Because they have a flexible diaphragm that seals against the flow of fluid, diaphragm valves are the best choice for fluids with solids in suspension. The valve can open and close because the diaphragm can move up and down. This design keeps solids from building up in the valve body and makes sure the valve works smoothly and reliably. Diaphragm valves are often used for things like slurries, treating garbage, and making chemicals.

Ball Valves

Ball valves are also a good choice for fluids with solids in suspension because they have a full-bore design that lets solids flow easily through the valve body. Ball valves have a ball that spins and can be moved to control how fluid flows through the valve. When the valve is open, the ball turns to let fluids and objects pass through. When the valve is closed, the ball turns to stop fluid from going through. Ball valves are often used in places like mines, the food industry, and the pharmaceutical industry.

Pinch Valves

These valves are made to work well with fluids that have solids suspended in them. To control the flow of fluid, they use a flexible tube that is closed by a device like a clamp or a screw. The tube can be made of materials that can stand up to wear and tear from objects, like rubber or elastomer. Pinch valves are often used in places like mines, paper mills, and wastewater treatment plants.

Knife Gate Valves

Knife gate valves are great for fluids that have solids suspended in them because the gate can cut through the solids to keep a clear path for the fluid to run through. The gate of a knife gate valve has a sharp edge that can cut through objects. This keeps the valve from getting clogged and worn down. Knife gate valves are often used in places like mining, making paper, and treating garbage.

Factors to Consider when Selecting a Valve for Solids in Suspension

Several things should be thought about when choosing a valve for fluids with solids in suspension. These things are:

The type of fluid

 It's important to know the type of fluid in order to choose the right valve. The material and form of the valve will depend on the type of solid particles, their size, and how many of them there are.

Flow rate and pressure

The size and type of valve you need will depend on the flow rate and pressure of the fluid.

Operating temperature

The material and design of the valve will depend on the temperature at which it will be used. This is to make sure that the valve can handle the temperature without affecting its performance.


When choosing a valve, you should think about how often it needs to be cleaned and fixed, among other things. The valve should be easy to get to and take care of.


To get the best performance, stability, and safety, it is important to choose the right valve for fluids with solids in suspension. For these kinds of fluids, you can use diaphragm valves, ball valves, pinch valves, or knife gate valves. Each type of valve has its own pros and cons, and the choice of valve will depend on the needs of the purpose. You can choose the valve that works best for your purpose by thinking about the type of fluid, how it will be used, and how it will need to be maintained.