Double eccentric flange telescopic butterfly valve is a new product developed by our company on the basis of double eccentric flange type butterfly valve, telescopic and other products. Itsstructure is new and easy to install and use, it is the old pipeline transformation, maintenance and matching valve replacement products
Features of double eccentric flanged telescopic butterfly valve;
set double eccentric flange type butterfly valve and telescopic function as one,installation and maintenance is very convenient.
The sealing between the telescopic tube and the valve body adopts a wedge-shaped sealing ring, which has reliable sealing performance and can guarantee zero leakage.
Double eccentric flange type telescopic butterfly valve is used in petrochemical, food, medicine, textile, paper, water and electricity,ship, water supply and drainage, smelting and other systems, all corrosive,non-corrosive gas, liquid, semi-fluid and solid powder lines and containers for regulation and closure.
Double eccentric flange telescopic butterfly valve has been widely used in petroleum, chemical industry, metallurgy, hydropower and other fields as a part of pipe system on-off and flow control. The butterfly plate ofthe telescopic butterfly valve is installed in the diameter direction of the pipe. Within the cylindrical channel of the butterfly valve body, the discbutterfly plate rotates around the axis, and the rotation angle is between0 . When rotating to 90 , the valve plate is fully open. This valve is generally installed horizontally. Technical advantages of double eccentric flange telescopic butterfly valve;
- Small and light, easy to disassemble and repair, and can beinstalled in any position
- Structure is simple, compact, operation torque is small ,90degree turn on quickly.
- flow characteristics straight line, good regulation performance
- butterfly plate is connected to the stem with a pinlessstructure to overcome possible internal leakage points
- Seals can be replaced and sealed reliably to achieve two-waysealing.
- Butterfly plate can be sprayed according to user requirements,such as nylon or polytetrafluoroethylene.
- The valve can be designed as flange connection and pair clampconnection.
- Drive mode can choose manual, electric or pneumatic.
When the double eccentric flange type telescopic butterflyvalve is in the fully open position, the thickness of the valve plate of thetelescopic butterfly valve is the main obstacle to the medium pressure loss, sothe pressure drop generated through the valve is very small, so it has betterflow control characteristics. The telescopic butterfly valve has two sealingtypes: elastic seal and metal seal. Elastic sealing valve, sealing ring can beinlaid on the valve body or attached to the butterfly plate peripheral.