Beijing, China
Business Type: Other
Butterfly valve, rubber lined
double flange, double eccentric,
Manufacture acc.to EN593
Face to face length acc.to ISO5752 series 13/14
Flange acc.to DIN2501
Body and disc of DI, CS,
Shaft of SS
with bare shaft, manual, gear, electric, pneumatic or others.
Applicable: sea water, corrosive medium etc.
If there is any request for large sizes or other materials, please contact us in detail.
Size | DN100 to DN4000 |
Pressure | PN10, PN16, PN25, PN40 |
Suitablem | water, and other weak corrosive liquid etc. |
Temp. | -10~120°C |
2. Double flanged double eccentric rubber seated butterfly standard items:
Description | Standard |
Design and manufacture | EN593 |
Face to face | ISO5752 series14, EN558-1 series 14, DIN3202 F4 |
Flange and drilling | ISO7005-2, EN1092, DIN2501 |
Pressure test | EN12266 ISO5208 |
Top flange of bare shaft valve | ISO5211 |
Top flange on worm gearbox for e-actuator | ISO5210 |
3. Double flanged double eccentric rubber seated butterfly main part material items:
Name | Material |
Body | ductile cast iron, WCB, stainless steel |
Disc | ductile cast iron, WCB, stainless steel, Al-bronze |
Stem | SS420, SS431 |
Disc seat ring | EPDM,NBR,VITON |
Body seat ring | SS304 |
Retainer | SS304, SS316 |
Shaft bearing | Al-bronze, self-lubricating bearing |
Bolt & nuts | 8.8 grade galvanized, SS304 |
Coating | epoxy coating, thickness: min. 250 microns, color code: RAl5015, 5017, 5010, and etc. |
4. Operating mode: bare shaft, worm gear+handwheel, electirc actuator, pneumatic actuator, hydraulic actuator, etc.
1. Product catalogue:
2.BCT Customers
4.Inspection and test
5.Packing
6.Installation and application