As one of the leading wafer eccentric butterfly valve, double eccentric wafer butterfly valve, double offset wafer butterfly valve, lug ecentric butterfly valve manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service.
Wafer eccentric butterfly valve
Description
1, wafer/lug double eccentric butterfly valve call as high performance butterfly valve also, which can bear high pressure , with long longevity and good stability comparing with center line type butterfly valve.
2, wafer/lug double eccentric butterfly valve was improved based on the center line type butterfly valve, the main structure features is the stem axis deviated the disc center and valve body, the results of double eccentric makes the disc break away from the the seat after the valve was opened or closed, eliminated drastically the non-necessary excessive squeeze and scraping between disc and seat.
3, the significant reduction of scraping makes the wafer/lug eccentric butterfly valve can adopt metal material seat to improve eccentric butterfly valve’s application in high temperature field.
4, adopted eccentric structure, reduced the sealing ring’s friction, prolonged the valve’s longevity.
5, Hand Lever / Worm Gear Operated Double Eccentric Design,off Set Disc,Wafer Type Butterfly Valve 150 Class,Fire Safe Design,High-Performance Double Offset- Class 150 - 2” through 24”, 30”, 36”.
6, during wafer eccentric butterfly valve opening or closing, the butterfly plate sealing face will be deviated gradually from and pressed into gradually the valve seat’s sealing face, thus reducing the mechanical abrasion and damage between the butterfly plate and the valve seat during opening or closing. For the wafer double-eccentricity butterfly valve, when the butterfly plate rotates from 0° to 8°-12°, the butterfly plate sealing face will break away from the valve seat sealing face completely, thus reducing the mechanical abrasion and the extrusion corner travel during opening or closing the double eccentric butterfly valve. With the reduction of mechanical abrasion and extrusion, the sealing performance and service life of butterfly valve will be improved greatly.
Valve materials of construction
Body Materials: Cast Iron/Ductile Iron/ WCB + S.S. , CF8/CF8M
Body painting : epoxy coating for iron material
Seat Materials: NBR, EPDM, VITON
Disc Materials: Ductile Iron+EPDM,duplex S.S./CF8/CF8M/CF3M+EPDM
Stem Materials: SS416/420, SS304, SS316,S.S.316L, duplex S.S.
Applicable standard
Size Range: 4~120"(DN100~DN3000）
Pressure: PN10, PN16, Class125, Class 150
Standard : ANSI,DIN,JIS
End Connection: wafer and lug
Operate: Manual, worm gear, double acting & spring return pneumatic actuated and electric motorized.
