The Difference Between Diaphragm Valve and Ordinary Valve

There are significant differences between diaphragm valves and ordinary valves, which are reflected in their construction, application fields, performance and cost.

1. Structural differences

Diaphragm valves feature an innovative design centered on a diaphragm made of high-performance materials such as rubber or PTFE. This diaphragm cleverly separates the upper and lower parts of the valve, which not only effectively isolates the medium, but also gives the valve unique operating characteristics. In contrast, ordinary valves follow more traditional construction principles and are mainly composed of standard components such as valve bodies, valve seats, valve stems and valve discs, and control the flow of media through simple mechanical movements.

2. Differences in application fields

Both also have their own emphasis. Due to its excellent corrosion resistance, wear resistance and sealing performance, diaphragm valves are particularly suitable for handling media that are highly corrosive, contain particles or have high viscosity. This makes it widely used in chemical, pharmaceutical, food and other industries. Ordinary valves, because of their simple structure and easy operation, are widely used in oil, natural gas, water treatment and other situations where fluid flow and pressure need to be controlled.

3. Performance differences

The good sealing performance of the diaphragm valve ensures that the medium will hardly leak when the valve is closed. At the same time, the wear-resistant and corrosion-resistant characteristics also extend the service life of the valve. Although ordinary valves can also meet general control needs, they may be slightly inferior in terms of sealing and durability.

4. Cost difference

Because the diaphragm valve uses a more complex structure and high-quality materials, its manufacturing cost will naturally be higher than that of ordinary valves. However, considering the long-term benefits and reduced maintenance costs it can bring during use, this price difference is acceptable in many cases.