Parameters and scope:

Model specification: HXF-HR1(Z) DN450-DN750(18"-30")

Material requirements: shell, valve disc stem, valve seat and dust cover, materials can refer to the detailed parameters of the breathing valve series

Operating pressure: -295Pa/+98000pa(-30mmH2O/+10000mmH2O)

Connection method: flange connection

Flange standard and pressure rating: HG, GB are common standards, PN6, PN10, PN16 are common pressure ratings of breathing valve flanges.