Diaphragm valves are an important element in many installations, playing a key role in ensuring the safety and efficiency of systems. These are devices that allow you to control the flow of substances in pipelines and other installations, while protecting against unwanted leaks or failures. How do they work and what are the benefits of using them?
Check out diaphragm valves at the Onninen wholesaler
Types and benefits of diaphragm valves
In hydraulic installations, one of the key issues is to ensure a high level of tightness to ensure the efficiency of the entire system. The use of diaphragm valves is a good solution because they allow you to regulate the intensity of flows in the installation. This feature is one of the greatest advantages of this solution.
There are two main types of products among diaphragm valves. The first of them are globe valves, characterized by the fact that the liquid can flow inside the installation without any restrictions. This effect was achieved thanks to the use of special membranes made of highly flexible materials. Closing the valve and retaining the fluid in the system means that the diaphragm must be strong. Due to their specific parameters, these models are perfect for pipelines designed to transport thick and viscous liquids, as well as suspensions and sludge.
The second option is weir valves. They differ from the first ones in their method of operation and construction. Inside the body, in its central part, there is a special protrusion whose task is to limit the passage inside the valve. The membrane in this model is smaller than in the first variant, but it must be thicker and heavier. This structure makes it more resistant to high pressure and temperature. The weir variant of the diaphragm valve is used primarily in the food industry.
According to another classification, valves can be divided into: direct, indirect or combined acting valves. Depending on the product variant, it operates with different pressure levels. For example, in intermediate valves, a certain minimum pressure is necessary to open the system.
The benefits of using membranes in valves also include durability and reliability of such a solution. Additionally, they allow for very precise control of the proper operation of the entire system.
Principle of operation of the diaphragm in a diaphragm valve
The detailed method of operation of the valve depends on its type and specifications, but in principle it is possible to indicate the general principle of operation. The elastic membrane inside bends, thus limiting the flow of the substance contained in the installation.
The membranes in the valves are made of polymers with various properties. It happens that some products are equipped with a silicone membrane.
Application of diaphragm valves
Due to their durability and operational advantages, diaphragm valves are widely used in many industries. They are particularly useful where conditions are difficult. The membranes are resistant to corrosive substances and those that could cause patency problems or lead to damage. Examples include viscous liquids, oily, fibrous suspensions or fluids containing solid particles.
Due to the fact that diaphragm valves allow for effective isolation of the medium in the system from the external environment, they can be used where high hygiene is necessary. A diaphragm valve ensures aseptic conditions.
The membrane structure is widely used in the food industry. Due to the specific nature and the need to maintain sterility, weir valves are usually installed, because their advantage is the possibility of self-cleaning. The solution will be perfect for, among others: in the production of food, purees, juices and drinks.
Diaphragm valves at the Onninen wholesaler
The Onninen installation wholesaler 's offer includes diaphragm valves for mechanical pumps used in industrial installations. Made of stainless steel, they are characterized by exceptionally high resistance to chemicals.
Wilo DN 100/PN 16 diaphragm valve is a device that can operate in systems with a wide pressure range. Compared to other proposals, diaphragm valves available from Onninen are very universal models that can be successfully used in various industries. The closing and opening mechanism guarantees safe and stable operation, regardless of the load. Reliable operation and high-quality components from which the valves are made mean that they can be part of virtually any installation, ensuring its proper operation, no matter how difficult the conditions are.