butterfly valve

Quick iInstall hand lever butterfly valve is the centerline butterfly valve, which means the shaft center of the valve stem, the center of the butterfly plate and the center of the body are in the same position. The structure is simple and the manufacturing is convenient. Common rubber-lined butterfly valves belong to this category.

Fire fighting signal butterfly valve 's gear worm -drive device chest is set up the microswitchs inside the body. 1. At the gearing chest has out inside the body to and the pass to two micrswitchs. Two switches move respectively at the valve standard-sized sheet with when cutting outm the pilot lamp power supply in the connection control room " valve leavel" "valve pas"' make accurately shows the valve switch state. 2. In the gearing chest body The signal is closed down by the export valve to the microswitchaction when thme butterfly board is by 0-40 seat, and another can be sebded out the valve and opening the signal to often closing the contact during 40-90° seat. Can adjust the cam that the pressure was touched the microswitch, and show the different seats of butterfly board place.

This SS316 butterfly valve adopts a triple eccentric structure, which has a tighter sealing function as it closes, and its sealing performance is reliable. The eccentric butterfly valve sealing material is made of stainless steel + asbestos board with long service life. The stainless steel + asbestos plate sealing ring can be located on the valve body or on the butterfly plate. It can be applied to media with different characteristics for users to choose. The high temperature butterfly valve used outside bearing, this design can avoid the bearing lock due to high temperature and the valve cannot be opened normally.

1. Small and light, easy to disassemble and repair, and can be installed in any position. 2. The structure is simple and compact, the operation torque is small, and the 90 ° rotary opening is quick. 3. The flow characteristics tend to be straight line and the regulation performance is good. 4. The connection between the butterfly plate and the valve stem adopts the structure without pin, which overcomes the possible internal leakage point. 5. The outer circle of butterfly plate adopts spherical shape, which improves the sealing performance and prolongs the service life of the valve, and keeps zero leakage after more than 50000 times of opening and closing under pressure. 6. The sealing element can be replaced, and the sealing is reliable to achieve bidirectional sealing. 7. Butterfly plate can be sprayed with coating according to user's requirements, such as nylon or PTFE. 8. The valve can be designed as flange connection and clamp connection

The structure is simple, the flow resistance coefficient is small, the flow characteristics tend to be straight line, and no debris will be retained. It has the advantages of light weight, convenient installation and small driving torque. This kind of valve can be used not only to cut off the medium, but also to adjust the flow rate of the medium. According to the user's requirements, the driving device can be manual, electric, pneumatic and so on. Parts of different materials and sealing rings of different materials can adapt to different conditions

PTFE Seat Butterfly Valve salt-resisting,soda-resisting,weakacid-risisting,it's adaptability is wide This butterfly valve small size and light weight easy instllation and mintenance The medium of the Ptfe Butterfly Valve is fresh water,sea water,all kinds of gas,oil salt and weak acid

1. The material of the product is strictly selected, controlled and selected strictly 2. A variety of production equipment in the factory can receive a large number of orders and supply in time 3. Mature production technology, fast delivery

▶▷A sealing ring, ensuringtightness in the seat, forms a sandwich of stainlesssteel sheets layered witha soft filler of graphite. This composition is able to withstand high temperatures and ensures excellent resilience of the sealing element even during significant fluctuations of medium temperature and pressure. ▶▷The packing system consists of a series of soft graphite sealing rings preventing leakage around the shaft. Graphite is a material which perfectly seals and resists high temperatures. Optimization of the ratio between tightness around the shaft and the actuating torque can be easily achieved by tightening or loosening the nuts holding the packing flange. ▶▷Spirally wound stainless steel band with a soft graphite filler guarantees a perfect seal even with large temperature and pressure fluctuations inside the pipe.

Manual Dn150 Butterfly Valve use the ductile iron for body tensile strength σb (MPa): ≥450 Hardness: 160～210HB and good casting performance, low cost. For this butterfly valve the applicable temperature range is wide, the minimum operating temperature is -40～-60℃, and it can be used at 130℃ for a long time The butterfly valve size will be from 2"-40" and pressure would be PN10/PN16/150LB