Hydraulic control butterfly valve for Hydropower station

Time：2019-04-11 15:23:30 Hot：

Hydraulic control butterfly valve for hydropower stataion

1. Size, pressure, medim and temp. range as listed below:

Size	DN100 to DN4000
Pressure	PN10, PN16, PN25, PN40
Suitablem	water, and other weak corrosive liquid etc.
Temp.	-10~120°C

2. 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. 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.

Notes: Other materials are available on request

4. Operating mode: lever, counter weight, hydrualic cylinder, and pack unit.