DN100 – DN4000/ 4"-160" Double Eccentric Double Flange Butterfly Valve BS EN593 EN12266

Double eccentric Butterfly Valve, rubber seated design,

double flange, is applied in the water industry, municipal engineering, water conservancy project, drinking water engineering, and etc.

Design standard: BS EN593
Face to face length : EN558-1/ISO5752 series 14& 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.

Overview:
1.Flange
Flange and drilling to EN1092-2, face to face as per ISO5752 series 14 & ISO5752 series 13.

2.Disc
Streamlined low profile disc ensures the lower flow resistance.
3. Body
Stainless steel welded and finished body seat ensures Reliable and durable performance.
4. Shaft
Disc to shaft connection by means of key, or taper pin.
5. Bearing
Self lubricating bearing of Al-bronze material, free from maintenance.
6. Gearbox
Low torque gearbox can be easily operated by hand wheel or connect with actuator.
7. Top flange
ISO 5211 top flange connect with gearbox or actuator.
8. O ring
Multiple shaft O rings provide long life and reliable sealing performance, which is easy to be adjusted or replaced.
9. Seal ring
T profiled disc seal ring fixed by retainer ensures the reliable sealing performance in both direction, which is also easy to be adjusted or replaced without any special tools

Butterfly valves are used for on-off or modulating services and are popular due to their light weight, small installation footprint, lower costs, quick operation and availability in very large sizes. These valves can be operated by handles, gears or automatic actuators.