Diaphragm valves
Diaphragm valves are a type of valve controlled by a flexible portion (membrane) that opens and closes depending on the pressure within the valve. The valve works by using the pressure of the fluid acting on a flexible membrane and when the pressure is high, the membrane is closed and when the pressure is low, the membrane opens. Diaphragm valves are used in a wide variety of applications such as industrial, medical, and engineering processes. These valves can be used in systems ranging from domestic plumbing to commercial gas and water systems.
The flexibility of the diaphragm means that it can respond quickly to changes in pressure, meaning it is often used in applications such as fuel tanks and air brakes. Additionally, the valves are often used in systems where pressure and temperature need to be controlled precisely, such as hydro-pneumatic systems and water tanks.
Data Controls and Standards
Since diaphragm valves are primarily used in controlling the flow of liquids and gases, they must be designed in such a way that they do not become damaged due to high pressure or temperatures. Data controllers and standards are put in place to ensure that any diaphragm valve manufactured meets these requirements. These standards are based on the operational requirements of the valve, including factors such as the pressure and temperature range it must be able to withstand. These standards also cover the materials used to construct the valve, as well as testing methods that ensure its integrity and durability.
The American Society of Mechanical Engineers (ASME) is one of the organizations that publishes standards for diaphragm valves. These standards cover testing methods, materials and design features for a range of pressure and temperature ranges for different types of valves.
Integral and Remote Diaphragm Valves
Diaphragm valves come in two forms: integral or remote. An integral diaphragm valve has a diaphragm that is built into the valve body itself, and this type of valve is often used in applications where the pressure is low. Remote diaphragm valves, on the other hand, feature a diaphragm that is separate from the valve body. These types of valves are often used in applications where the pressure is higher, such as in fuel systems and air brakes.
Conclusion
Diaphragm valves are widely used in a variety of applications, including domestic and commercial gas and water systems. As they are used in situations where accurate pressure and temperature control is essential, they must be designed to be able to withstand the pressures and temperatures they are exposed to. Data controllers and standards are in place to ensure any diaphragm valves that are manufactured meet these requirements. Diaphragm valves come as either integral or remote, and the type chosen will depend on the application in which it is being used.
