Wafer Butterfly Valve

Wafer butterfly valve
D71X
This series of valve products are widely used for level control of the towers, pool, high-rise building and other facilities.

Performance characteristics
1. The center of the linear structure
2. Valve plate and shaft to rely on accurate Double "D" type flat wedge connection and drive, no need to screw / pin, higher CV value, reliability and more convenient disassembly.
3. Valve shaft top and bottom of a pair of bearings prevents shaft ran relaxed and stable operating torque.
4. Seat sealing wide-brimmed design to achieve high sealing performance.
5. Seat distorted in the installation and use of offset and wear to rely on the strengthening of the seat backrest has been a good improvement.
6. All valves at the top of the platform are in line with the requirements of ISO521, can be directly installed in accordance with ISO5211 requirements of electric, pneumatic and other actuators.
7. Installation easy without additional mounting flange gasket.
The main technical parameters:
(1) Nominal diameter: DN50 ~ DN300mm
(2) Nominal pressure: 1.0/1.6Mpa
(3)Seal test: 1.1PN
(4)Shell test: 1.5PN
(5) the length of the structure: To GB12221-89
(6) Flange standard: GB9113-88
(7)Operating temperature: NBR -10 ° C ~ 80 ° C
EPDM -20 ° C ~ 120 ° C
PTEE -20 ° C ~ 150 ° C
Material Description:
Item Part name Material
1 body gray iron, ductile iron, carbon steel, stainless steel
2 disc Ductile iron
3 shaft stainless steel
4 seat rubber
5 "O"-ring rubber