Knowledge sharing: teach you how to choose a high quality butterfly valve

The butterfly valve has the advantages of simple structure, small volume, light weight, material consumption, installation of small size, fast switching, reciprocating and rotating 90 degrees, small driving torque characteristics pole structure of the stem to pass, after quenching, with good mechanical properties and corrosion resistance, scratch resistance. When the butterfly valve is opened and closed, the valve stem is only rotated and does not move up and down. The packing of the stem is not easy to destroy, and the seal is reliable. It is fixed with the cone pin of the butterfly plate, and the outstretched end is designed to prevent the outgoing design, so as to prevent the stem from breaking out when the stem and the butterfly plate connection is accidentally broken.

Butterfly valve introduction:

1, butterfly valve has the advantages of simple structure, small volume, light weight, material consumption, installation of small size, fast switching, reciprocating and rotating 90 degrees, small driving torque characteristics, for truncation, connect, adjust the line of medium, has good flow control characteristics and close sealing performance
2, the butterfly valve can carry mud, and the minimum amount of liquid is deposited at the pipe mouth. A good seal can be achieved under low pressure. The regulation performance is good.

The streamline design of 3 and butterfly plate makes the loss of fluid resistance small, it is a kind of energy-saving product.


4, the stem is a connecting rod structure, after being quenched and tempered, it has good comprehensive mechanical properties, corrosion resistance and abrasion resistance. When the butterfly valve is opened and closed, the valve stem is only rotated and does not move up and down. The packing of the stem is not easy to destroy, and the seal is reliable. It is fixed with the cone pin of the butterfly plate, and the outstretched end is designed to prevent the outgoing design, so as to prevent the stem from breaking out when the stem and the butterfly plate connection is accidentally broken.
5, the connection mode has flange connection, pair clamp connection, butt welding connection and lug pair clamp connection.

The actuators are actuators such as manual, worm drive, electric, pneumatic, hydraulic and electro-hydraulic linkage, which can realize remote control and automatic operation.

There are three selection criteria for butterfly valves:
1. Select the applicable butterfly valve according to the parameters (size, size, size)
2. Is there a regular production qualification and product detection report
3. Material material should be guaranteed. The use of the hydraulic system must be special for the butterfly valve
4, the butterfly valve structure to be reasonable, to have a stronger product.