Our goal: to be a high-quality manufacturer of industrial control valves, gaining unanimous recognition from new and old customers
Our mission: To fully utilize the effectiveness of industrial control valves to achieve better results
General characteristics of butterfly valves
1. Butterfly valves are characterized by simple structure, small volume, light weight, low material consumption, small installation size, rapid switching, 90 ° reciprocating rotation, and small driving torque. They are used to cut off, connect, and regulate the medium in pipelines, and have good fluid control characteristics and closing sealing performance.
2. Butterfly valves can transport mud and store less liquid at the pipe orifice. Good sealing can be achieved under low pressure. Good adjustment performance.
3. The streamlined design of the butterfly plate reduces the loss of fluid resistance, making it an energy-saving product.
4. The valve rod is a through-stem structure, which has undergone tempering treatment, and has good comprehensive mechanical properties, corrosion resistance, and scratch resistance. When the butterfly valve is opened and closed, the valve stem only rotates without lifting. The packing of the valve stem is not easily damaged and the seal is reliable. It is fixed with the tapered pin of the butterfly plate, and the protruding end is designed to prevent the valve rod from collapsing when the connection between the valve rod and the butterfly plate accidentally breaks.
5. The connection methods include flange connection, wafer connection, butt welding connection, and lug wafer connection.
The driving forms include manual, worm gear transmission, electric, pneumatic, hydraulic, electro-hydraulic linkage, and other executive mechanisms, which can achieve remote control and automatic operation.
advantage
1. Convenient and rapid opening and closing, labor-saving, low fluid resistance, and frequent operation.
2. Simple structure, small overall size, short structural length, small volume, light weight, suitable for large diameter valves.
3. It can transport mud and store less liquid at the pipe mouth.
4. Good sealing can be achieved under low pressure.
5. Good adjustment performance.
6. When fully open, the effective flow area of the valve seat channel is larger and the fluid resistance is smaller.
7. The opening and closing torque is relatively small. Due to the fact that the media acting on the butterfly plates on both sides of the rotating shaft are basically equal, the direction of the torque generated is opposite, so it is easier to open and close.
8. The sealing surface material is generally rubber or plastic, so the low pressure sealing performance is good.
9. Easy installation.
10. The operation is flexible and labor-saving, and manual, electric, pneumatic, and hydraulic modes can be selected.
shortcoming
1. The operating pressure and temperature range are small.
2. Poor sealing performance.
Butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type, and lever type according to their structural forms.
According to the sealing form, there are two types: soft sealing type and hard sealing type. The soft seal type generally adopts rubber ring seal, while the hard seal type usually adopts metal ring seal.
According to the connection type, it can be divided into flange connection and wafer connection; According to transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
