Standard	EN593/ ISO5752 /BS5155/AWWA C504 Flange drilling is according to DIN2501, BS4504, ANSI B16.1
Working pressure	10bar/16bar/25bar
Testing pressure：
Shell	15bar/24bar/37.5bar
Seal	11bar/17.6bar/27.5bar
Type	Double Flange Eccentric, Double Flange Concentric
Material：
Body	DI/CI /Carbon Steel/Stainless Steel
Disc	DI/Stainless steel 304/316,AL-Bronze
Shaft	Stainless steel410/416/420
Seat	EPDM/NBR
Coating	Internal and external with fusion bonded epoxy coating min250μm

Double Flange Butterfly Valve

No	PART NAME	MATERIAL
1	Gear box	Carbon steel/ stainless steel/cast iron
2	Support	Carbon steel/ stainless steel/cast iron
3	Body	Cast iron/ductile iron/ stainless steel/carbon steel
4	Disc	AI-Bronze/ monel/CF8M/WCB/ductile iron
5	Bolts	Carbon steel/stainless steel
6	Retalner	Carbon steel/stainless steel
7	Rubber seat	EPDM/PEFE/buna/hypalon/viton/neoprene
8	Seat retainer	Carbon steel/ stainless steel/cast iron

TIANYI SUNS PIPE&FITTINGS CO.,LTD. is one of the main suppliers in China manufacturing and supplying of advanced pipe systems and solutions, connecting people with water and energy. We provide a broad range of pipeline system products for infrastructure, building ,irrigation ,industry, gas and energy applications.Our ProductOur main pipeline system product are as below: ductile iron pipe, ductile iron pipe fitting, manhole cover, gate valve, butterfly valve, check valve, Y strainer, flange, dismantling joint, flange adaptor, flexible coupling, saddle, gibault joint and repair clamp.