Posi flate butterfly valve (valve)

Posi flate butterfly valveA type of valve in which the closing element (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing, mainly used for cutting off and throttling in pipelines. The butterfly valve opening and closing component is a disc-shaped butterfly plate that rotates around its own axis inside the valve body to achieve the purpose of opening, closing, or adjusting. The fully open and fully closed butterfly valve is usually less than 90 °, and the butterfly valve and stem themselves do not have self-locking ability. In order to position the butterfly plate, a worm gear reducer should be installed on the stem. By using a worm gear reducer, not only can the butterfly plate have self-locking ability to stop at any position, but it can also improve the operational performance of the valve. The characteristics of industrial butterfly valves are high temperature resistance, high pressure range, large nominal diameter, carbon steel valve body, and metal ring instead of rubber ring for valve plate sealing. Large high-temperature butterfly valves are manufactured by welding steel plates and are mainly used for flue gas ducts and gas pipelines for high-temperature media.

The rubber elastomer in Posi flate butterfly valves may experience tearing, wear, aging, perforation, and even detachment during continuous use. However, traditional hot vulcanization processes are difficult to meet the needs of on-site repairs, requiring specialized equipment and consuming a large amount of heat and electricity, which is time-consuming and labor-intensive. Nowadays, the use of polymer composite materials is gradually replacing traditional methods, among which the most widely used is the Fushilan technology system. The adhesive strength and excellent wear and tear resistance of its products ensure that the repaired parts meet or even exceed the service life of new components, greatly reducing downtime.

Structural characteristics of Posi flate butterfly valve:

1. Butterfly valves have the characteristics of simple structure, small volume, light weight, low material consumption, small installation size, fast opening and closing, 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 with minimal accumulation of liquid at the pipeline outlet. Under low pressure, good sealing can be achieved. Good regulation performance.

3. The streamlined design of the butterfly plate reduces fluid resistance loss, making it an energy-saving product.

4. The valve stem is a through stem structure that has undergone quenching and tempering treatment, and has good comprehensive mechanical properties, corrosion resistance, and abrasion resistance. When the butterfly valve is opened and closed, the valve stem only rotates and does not move up or down. The packing of the valve stem is not easily damaged and the seal is reliable. Fixed with the butterfly plate cone pin, the extended end is designed to prevent the valve stem from bursting out in case of accidental breakage at the connection between the valve stem and the butterfly plate.

5. The connection methods include flange connection, clamp connection, butt welding connection, and lug clamp connection.