The Model 31-B is a compact relief regulator designed expressly for use as a back pressure regulator or bypass valve for controlling inlet pressure between 2 and 6 Inches – W.C. Body is available in cast carbon steel or stain less steel materials only. Interior wetted trims for
corrosive applications is standard.
Body Sizes: 1/2″, 3/4″, 1″, 1-1/2″, 2″
Maximun CV: 3.02
Materials_Body: CS, SST
Materials_Spring Chamber: CS
End Connections: NPT, FLANGED, EXTENDED NIPPLES
Temperature Range: -30 to 400F
Inlet Pressures Range: UP to 50 PSIG
