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What Are The Major Types Of Diaphragm Valves?

Bidirectional diaphragm valves are used on all diaphragm valves. They can be utilized as throttling and on-off valves. Diaphragm valves provide benefits over other types of valves in certain low-pressure applications. Their fluid channels are streamlined and smooth, reducing pressure drop. They’re ideal for mild throttling applications and have good leak-tight properties, even while transporting liquids with suspended particulates. The valve’s working parts are separated from the fluid stream, preventing contamination of the fluid and corrosion of the operating mechanism. The valve is essentially leak-proof since there is no leak route around the valve stem. When leakage into or out of the system cannot be permitted, this characteristic makes the valve vital.

Types of Diaphragm Valves:

Diaphragm Valves of the Weir Type

A weir is supplied as an inherent element of the valve body, as illustrated in Fig. A. The weir serves as the valve seat, compressing the diaphragm to halt the flow. This diaphragm valve is often manufactured in big sizes. The higher weir minimizes the amount of diaphragm travel from completely open to fully closed, minimizing diaphragm tension and strain.

Diaphragm Valves with a Straight Path

The diaphragm of the straightway valve raises high when it is open, allowing complete streamlined flow in either direction. Even with gritty or fibrous debris in the line, when the valve is closed, the diaphragm seals tight for positive closure. In the beverage business, full-bore valves are the most commonly utilized. It allows you to clean the ball brush with steam or caustic soda without having to open or remove the valve from the line.


The diaphragm valve is extensively utilized in a variety of sectors because it is inexpensive, effective, and versatile. The number of conceivable uses is unlimited, however here are a few examples of popular applications for diaphragm valves:

  • Treatment plants for water.
  • Systems for producing pharmaceuticals.
  • Plants that process food and chemicals.
  • Industries that generate electricity.
  • Services for vacuuming.
  • Breweries.
  • Applications that are corrosive.

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What Are The Major Types Of Diaphragm Valves?

by Piping Mart time to read: 1 min