As one of the leading big size resilient seat gate valve,Website: , dn800 soft seat cast iron gate valve, dn900 resilient seat ductile iron gate valve, dn500 epdm seat cast iron gate valve manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service. Big size resilient seat gate valve Components   Dimensions                Unit mm 1 Body Cast iron / Ductile iron   DN L 2 Disc   S.S. /  bronze   3 Bonnet Cast iron / Ductile iron   F4 F5 BS5163/5150 ANSI SABS 4 Stem S.S. / Brass   DN350 290 550 381 381 470 5 O-ring NBR   6 Nut Brass / Bronze   DN400 310 600 406 406 470 7 Seat Brass / Bronze   8 Operation Handle wheel / Gear   DN450 330 650 432 432 485           Applicarion   DN500 350 700 457 457 510 1 Face to face according to DIN F4/F5/ANSI/BS/JIS/SABS     DN600 390 800 508 508 600   DN700 430 900 610 610 610 2 Flange drill according to DIN2532/ 2533/ 2501/EN1092/ ASME B16.1/16.5   DN800 470 1000 660 660 660   DN900 510 1100 711 711 711           DN1000 550 1200 811 811 811 Test           Work pressure PN10 PN16   DN1200 630 1400 1015 1015 1015 Shell pressure 1.5 Mpa 2.4 Mpa   DN1400 710       Seat pressure 1.1 Mpa 1.76 Mpa   DN1600 790