Which type of valve is preferred for slurry flow regulation and control?

Pinch Valves A cost-effective flow control valve, pinch valves are ideal for applications of slurries or liquids containing significant amounts of suspended solids.

What is the purpose of pinch valve?

A pinch valve is a 2/2-way valve designed to shut-off or control the flow of corrosive, abrasive or granular media. It utilizes pressurized air to open or close the valve. In the open position, the valve has no restrictions and allows a wide range of media to pass through the bore.

What are the advantages of a pinch valve?


  • Low & easy maintenance.
  • Low weight.
  • No clogging or dead spots.
  • Compact, simple, robust & straight through design.
  • Very fast opening/closing times.
  • Less air consumption.
  • Self cleaning.
  • Permanent seal with tight shutoff.

Can a pinch valve regulate flow?

This air-tight benefit comes in a lightweight valve that allows completely free-flow of product, without any resistance to flow when un-engaged. And pinch valves can reliably regulate the flow of applications to specific percentages of flow with a flow regulator or mechanical screw.

Which of the following valves is best suitable for slurry applications?

Pinch Valves They work well in most applications and are inexpensive to install. If you have a slurry with a significant percentage of solids, pinch valves can be a good choice. These seal using flexible elements like rubber tubes, which are pinched to control fluid flow.

What is slurry valve?

The Solution: Slurry Valves Valves designed to move slurry fluids face numerous challenges. These fluids are thick, filled with solids and quite often highly abrasive material. Plugging can be a problem with slurry applications in the material handling process.

What is pinching mechanism?

In its simplest form, the valve may comprise of a length of elastomer tube equipped with a mechanism of pinch bar, providing a closure in order to stop and prevent from over-pinching of the tube. The pinching mechanism is typically carried out by a molded rubber tube that is placed inside a body.

What is a pneumatic pinch valve?

Clippard’s NPP Series 2-Way pneumatic pinch valves are air-piloted devices designed to open or close tubes for controlling flow of liquids and gases. Other valve types have internal passages that may cause small amounts of fluid to remain in the valve.

What do pinch valves and diaphragm valves have in common?

Diaphragm valves are comparable with pinch valves in terms of their function and design. Both have a soft seal rubber element fitted in the valve housing that performs the main task of stopping the flow of media.

Which of the following valves permit flow of slurry material?

Knife Gate Valve Knife gate valves are the least desirable valve for controlling abrasive slurry. When the gate modulates, acute angles are formed between the gate and valve body. These angles produce high fluid velocities, increasing the wear rate significantly.

Can you throttle a pinch valve?

Function. Pinch valves can be used for On/Off, as well as throttling services.

Which valve is used in slurry service?

Gate valves or knife gates can be used in slurry service. With many gate valves, end users must be willing to sacrifice tight shut-off when they are used in lime slurry. Most gate valves have a wedge in which the gate is forced to close the valve.