Step 6 · Tighten Lock Nut and Finish
Once you have successfully adjusted the pressure to your desired level (ideally between 50 and 60 PSI), the final step is to secure your adjustment. Using the same adjustable wrench or pliers, turn the lock nut clockwise until it is snug against the bell housing of the PRV. Do not overtighten, as this can damage the valve. Just make it firm enough to prevent the adjustment screw from vibrating or turning on its own. Finally, you can turn off the outdoor hose bibb and remove your water pressure gauge.
Tools and Materials
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