valve bonnet for 2-9/16 gate valve nb: 2", 3",4" gate valve bonnet rated wp:2000-10000psi valve ... cover api certified valve valve bonnet for 2-9/16 gate valvenb: 2", 3",4" GATE VALVE BONNETrated wp:2000-10000psi ... city for petroleum machinery production . our main range includes wellhead xmas tree, water injection wellhead , gate valve , choke valve ,mud valve , manifolds ...