There are three kinds of forged steel gate valve bonnet design, one is bolt type bonnet, through the concave and convex surface connection, stainless steel band and flexible graphite wound gaskets, ring joint may be adopted according to the demand, the second is welding type bonnet, after thread sealing welding, and the rigid welding according to the requirements can be directly used, the third is the sealing cover, since the seal bonnet joint with thread.

Product model: Z41H
Nominal diameter: DN15~50mm
Nominal pressure: PN1.0~10.0MPa
Main materials: A105, LF2, F5, F11, F22, F304,F316, F304L,F316L
Design and manufacture: GB12234GB1221GB9131
Structure length: JB/T74
Connection flange: GB9112 ~ 9131
Pressure-temperature: HGJ67JB/T74 ~ 90
Test and inspection: HGJ44 ~ 76JB/T9092