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Comparison and analysis of the performance of the wafer butterfly valve
With the same nominal pressure and nominal diameter, ordinary which has better tightness and is not easy to leak? butterfly valve or gate valve? The airtightness of the gate valve is better than that of the butterfly valve, but there are also manufacturers’ butterfly valves that have better airtightness. The gate valve is large in […]
What is a wafer type butterfly valve
The butterfly valve plate of the wafer type butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°-90°. When the rotation reaches 90°, the valve is fully opened. This valve […]
Notes on selection and installation of butterfly valve
Product selection points of butterfly valves: 1. The main control parameter of the butterfly valve is the size. 2. The butterfly valve is a single-plate air valve. It has a simple structure, convenient processing, low cost, and easy operation, but the adjustment accuracy is poor. It is only suitable for the occasion of switching or […]
Common failures of butterfly valves and the characteristics of installation
Common errors of butterfly valves: The rubber elastomer in the butterfly valve will tear, wear, aging, perforate or even fall off during continuous use. The traditional thermal vulcanization process is difficult to meet the needs of on-site repair. Special equipment is used for repair, which consumes a lot of heat and electricity, which takes time […]
Applicable occasions of butterfly valve
Butterfly valves are suitable for flow regulation. Because the pressure loss of the butterfly valve in the pipeline is relatively large, the robustness of the butterfly plate to withstand the pressure of the pipeline medium when closing should also be considered. In addition, the working temperature limit of the elastic seat material must be considered […]
How to choose the right butterfly valve (2)
However, the following problems still exist during the use of this butterfly valve: 1. Due to the multi-layer soft and hard laminated seal ring fixed on the valve plate, when the valve plate is normally open, the medium forms a frontal flush on the sealing surface. The soft sealing tape in the metal sheet interlayer […]
How to choose the right butterfly valve (1)
When the butterfly valve is fully open to fully closed, it turns usually less than 90°. The butterfly valve and the butterfly stem itself have no self-locking capability. For the positioning of the butterfly plate, a worm gear reducer must be installed on the valve rod. The use of worm gear reducer can not only […]
The main classification method of butterfly valve (2)
According to the connection method, the butterfly valve can be devided into four or five types: 1. Wafer type butterfly valve The butterfly plate of the wafer butterfly valve is installed in the diameter direction of the pipeline. The valve is fully open. Wafer type butterfly valve has simple structure, small volume and light weight. […]
The main classification methods of butterfly valve (1)
There are several classification methods of butterfly valves. According to the driving method (1) Electric butterfly valve (2) Pneumatic butterfly valve (3) Hydraulic butterfly valve (4) Manual butterfly valve According to the structure: (1) Center sealed butterfly valve (2) Single eccentric sealed butterfly valve (3) Double eccentric seal butterfly valve (4) Triple eccentric seal butterfly […]
The advantages and disadvantages of butterfly valves
Advantages of butterfly valve: 1. Convenient opening and closing, labor saving, low fluid resistance, and can be operated frequently. 2. The structure is simple, the external dimensions are small, the structural length is short, the volume is small, and the weight is light. It is suitable for valves with large diameter. 3. Mud can be […]