double flange resilient seated butterfly valve

double flange resilient seated butterfly valve Product introduction

double flange resilient seated butterfly valve adopts double eccentric structure, so the sealing surfaces can be separated during opening without any damage. Its new structure,excellent performance and bi-directional function. Its widely used to throttle or adjust medium flow volume in industrial pipeline in the fields of water supply and drainage, petroleum, power and municipal construction.

double flange resilient seated butterfly valve valve standard

Face to face according to ISO5752 series 14(DIN3202-F4/EN558-14)

Flange drilled according to ISO7005-2(EN1092-2, DIN2501)

Coating: fusion bonded epoxy resin thickness≥250um

Suitable medium: water and low-corrosive liquid etc.

Suitable temperature: -10~120°C.

double flange resilient seated butterfly valve Technical parameters

Description	Standard
Design and manufacture	EN593
Face to face	ISO5752 series14, EN558-1 series 14, DIN3202 F4
Flange and drilling	ISO7005-2, EN1092,
Pressure test	EN12266
Top flange of bare shaft valve	ISO5211
Top flange on worm gearbox for e-actuator	ISO5210

double flange resilient seated butterfly valve Main part material

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.

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double flange resilient seated butterfly valve

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