DS341F telescopic butterfly valve

elescopic butterfly valve products:

The diameter direction of the butterfly plate installed in pipeline telescopic butterfly valve. Cylindrical channel in the butterfly valve, disc-shaped butterfly plate around the axis of rotation, the rotation angle is 0° ~90 °, the 90 ° rotation, the valve is full-state license.

Telescopic butterfly valve application scope:

Telescopic butterfly valve used to achieve piping system as an on-off and flow control components, has been in many fields of petroleum, chemical, metallurgy, water and electricity are very widely used.

Three eccentricity metal hard sealing telescopic butterfly valve and seat components for the piece, the valve seat sealing surface layer welding temperature, corrosion resistant alloy material. Multi-layer soft-stacked ring fixed in the valve plate, this butterfly has a high temperature compared with the traditional butterfly valve, easy to operate, open and close without friction, closed with the transmission of the torque to compensate for increased seal, to improve a butterfly valve sealing performance and durability advantages, suitable for high temperature, high pressure and corrosion resistance to wear, etc..

Telescopic butterfly valve structural characteristics:

1, novel design, reasonable, unique structure, light weight, convenient operation, fast opening and closing;
2, in addition to the telescopic butterfly valve for regulating and interception effect, temperature compensation pipeline thermal expansion and contraction function, but also for the installation and replacement, repair valves provide a convenient;
3 sealing parts replaced, adjustable, reliable sealing performance.

Telescopic butterfly classification

Classification of 1, telescopic butterfly valve according to the structure of the form

( 1 ) single eccentric telescopic coal valve
( 2 ) double eccentric expansion butterfly valve
( 3 ) three eccentric expansion off valve

2, the telescopic butterfly valve by sealing surface material classification
( 1 ) the soft sealing telescopic butterfly valve.
1 ) sealing by the non-metal soft materials on the non-metallic soft material composition.
2 ) by metal hard seal material on the non-metal soft material.
( 2 ) the metal hard seal butterfly stretching. By metal hard seal material on the metal hard material.

Standard Specification for butterfly valve expansion:
Design and manufacturing standards: GB/T 12238-2008, JB/T 8527-1997
The structural length standard: GB/T 12221-2005
The connecting flange standards: GB/T 9113
Pressure - temperature rating: GB/T 12224-2005
Testing standard: GB/T 13927-2008