Product introduction:
The flange expansion butterfly valve is to avoid the axial deviation of the pipeline caused by thermal expansion and contraction and other factors, and the professionally designed valve can freely expand and contract on the pipeline. Telescopic butterfly valve is a general term, it can be a soft-seal telescopic butterfly valve or a hard-seal telescopic butterfly valve. Like the flanged butterfly valve, the valve is suitable for various working conditions. The structural length of the valve can be axially extended and retracted within a certain range, and can also overcome the offset caused by the different axes of the pipes butting within a certain angle range. The design of the valve solves the error caused by the installation process, and can effectively avoid the leakage or damage of the pipeline caused by thermal expansion and contraction.
Product Features:
1. Unique structure, flexible design, light weight, labor saving, quick opening and closing.
2. It can not only compensate the function of thermal expansion and cold contraction caused by the temperature difference of the pipeline, but also facilitate the installation and replacement of maintenance valves.
3. The sealing part can be adjusted and replaced, and the sealing performance is reliable.
4. Compact shape, light weight, low production cost, wide application range and long service life.
5. Because the length of the structure can be freely adjusted, it can effectively avoid the leakage or damage of the pipeline caused by the stress concentration caused by thermal expansion and contraction.
6. The butterfly valve can not only solve the problem of pipeline installation and various self-stress problems, but also can be used to open and close or adjust the flow of the medium. It can be said that the valve is multi-purpose.
Field of Application：
Operating Temperature：
NBR: 0℃~+90℃
EPDM: - 20℃~+120℃
PTFE: -10℃~+150℃
Operate:
DN32-DN250: Lever
DN300-3200: Worm gear
Optional operation: Lever, Worm gear, Pneumatic, Electric-Motorized
Application: Chemical processing, Desalination plants, Drinking water, Dry powder, Food and beverage, Gas plants, HAVC Mining industry, Paper industry, Sand handling, Seawater, Sugar industry, Thermo technical water treatment, Waste water, Cooling Water Circulation, Compressed Air
Technical Specification：
Design Standard:
EN 593, MSS SP67, API 609, BS5155
Face to Face dimension:
ISO 5752, EN 558, MSS SP67, API 609, DIN3202
End Standard:
ANSI B16.1 Class125LB & B16.5 Class150LB
AS 2129 Table D & E BS 10 Table D & E
DIN 2501 PN6, PN10 & PN16
EN 1092 PN6, PN10 & PN16
ISO 2531 PN6, PN10 & PN16
ISO 7005 PN6, PN10 & PN16
KS B 1511 / JIS B 2210 5K & 10K
MSS SP44 CL. 150LB AWWA C207
SABS 1123 Table 1000/3 & Table 1600/3
Top Flange: ISO5211
Test standard: API 598, ISO 5208, EN 12266
MATERIAL LIST
| Material Specification |
| Part Name | Material |
| Body | Cast Iron, Ductile iron, WCB, SS304, SS316, Bronze, Aluminum Alloy |
| Seat | EPDM, NBR, PTFE, VITON, Rubber |
| Dsic | Ductile Iron, CF8, CF8M, WCB, Bronze, Aluminum Alloy
|
| Stem | 45#, 410, 420, 431, 304, 304L, 316, 316L, Bronze, Monel, Hard alloy |
