Butterfly valves are a commonly used solution in installations, they enable convenient and effective regulation of flow between subsequent sections of the pipeline. What variants of butterfly valves can be distinguished, how are they constructed and in what situations are they used?
Check out butterfly valves at the Onninen wholesaler
Types of butterfly valves
The butterfly valve, or throttle, is one of the most frequently used solutions. Its primary role is to regulate the flow of liquid in the system. This effect is achieved thanks to the special construction of the valve. The main element of the structure is a disk that rotates like a butterfly's wings - which gives it its name.
In practice, butterfly valves are available in various variants. When analyzing available solutions, you can use various criteria. One of them is the type of construction. The first is a butterfly valve with a flanged structure, which is attached to pipes using special flanges. In the annular wafer design, the valve itself has no flanges and is mounted using pipe flanges. The last solution is inter-flange structures with ears. In this variant, the whole thing is attached with special external screws.
The second division criterion relates to the location of the disc. What stands out here is:
- concentric valve, also called coaxial, this is the simplest design in which the shaft is located in the central part of the disk;
- double eccentric valve, the characteristic feature is the displacement of the shaft and disk relative to each other, in two planes (along the fluid flow axis and the pipe cross-sectional plane;
- a triple eccentric valve, which differs from the previous variant by an additional shift along the axis of the disk truncation.
How is a butterfly valve constructed?
The butterfly valve is characterized by a specific structure, which includes four characteristic elements:
- valve body ;
- disk;
- pin;
- nest.
Each of the components plays a very important role in the proper functioning of the entire system. When the valve is closed, the disc inside blocks the flow of the liquid in the system. The valve is activated after connecting the stem to the actuator.
Application and purpose of butterfly check valves
Their simple design and effective operating effect make butterfly valves widely used in various industries and industries. Disc valves are suitable for both cold and hot water installations. They can be installed in open and closed systems. Butterfly valves are perfect for water and heating installations.
Both the butterfly valve and the ball valve are used to cut off the flow, but both variants are used in different situations. The valve intended for high-pressure installations is characterized by high quality of operation, but where butterfly valves are used, it is not the operating temperature that matters, but the pressure regulation system that allows for its balancing.
Butterfly valves at the Onninen wholesaler
Butterfly valves are very popular due to their numerous advantages. These are modern and effective solutions with a solid and durable structure. Universality is also important. High-quality models are available at the Onninen wholesaler.
The simplest and most popular solutions include a chrome tap valve, BSZ head with a butterfly knob . Its structure resembles a classic faucet, easy to use. The product is prepared by the Schell brand, a manufacturer with extensive experience and trusted by professionals. The product is equipped with a backflow blocker and a pipe aerator. Thanks to the threaded connector, it can be easily attached to the hose.
The offer also includes FAF type butterfly check valves . Due to their specific design, they are mainly used in heating and air conditioning networks, as well as water supply and industrial networks. FAF butterfly valves can be installed in water or oil installations and wherever the substances in the system do not react with carbon steel in any way. The Onninen wholesaler offers various variants of valves, adapted to the needs of various installations. Before purchasing, it is best to check the detailed technical data to choose the right size valve type . We offer models with DN: 40, 50, 65, 80, 125, 150, 200, 250, 300, 350 and 400.
A special variant is the double eccentric flanged damper . This product is prepared by the Aeon brand. This solution is commonly used in installations regulating the flow of drinking water and treated municipal sewage. They can also be installed in systems filled with non-aggressive media.