rubber seated Butterfly Valve, double eccentric disc design, double flange, series 14 or series 13
Design standard: BS EN593
Face to face length : EN558-1/ISO5752 series 14 (DIN3202 F4) / ISO5752 series 13
Flange dimension and drill : BS EN1092/BS4504 (DIN2501)
Size: DN100 - DN4000/ 4" - 160"
Pressure rating:PN6- PN10-PN16-PN25-PN40
Application: water, drinking water, sewage, low-corrosive liquid etc.
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
