Double Eccentric, wafer/flange, industrial valve/control, GGG40, METAL/RUBBER, Butterfly Valve

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