产品型号：

ALUMINU BUTTERFLY VA

Standards
1	Design	API 609, BS EN 593, Din 3352
2	Face To Face	API 609, BS EN 5558 Din 3202
Main Part Name and MATerial
1	Body	Cast Iron , Ductile   Cast steel, Stainless steel
2	Disc	Ductile Iron,Nylon or PTFE  Cating   Bronze ,Stainless steel
3	Seat	Hypalon Epdm Nbr Viton Ptfe Neoprene
4	Shaft and Pin	Astm A182-F304/F316/410/416  Monel  K500  NBR or EPDM