TeeJet - Diaphragm - Type Pressure Relief / Regulating Valve.
Model 8460 features:
Flow rate to 56 gpm (212 l/min) for 1/2"
Flow rate to 70 gpm (365 l/min) for 3/4".
Stainless Steel Springs, responsive to the pressure range of each valve.
Extra large valve passages to handle full flow from supply line.
Positive locknut to hold adjustment screw firmly in place. Not affected by jarring and vibration.