I have a PRV installed outside with a faucet located right above it. When the faucet is turned on the water pulsates out. Also, when more than one faucet/toilet/shower is turned on inside, water flow is reduced out of them all with a pulsating noise reverberating through the pipes. Once the toilet is filled or the faucets turned off = no noise. Tried venting the air by turning off the main water valve and opening all of the faucets, but the flow and noise issues are still there. The only "faucet" that I didn't turn on after shutting off the main water valve was the water heater drain valve. Does it sound like a a bad PRV? If you need additional details to help me diagnose, please let me know. If it's bad, is it easy to replace (accessibility is NOT an issue), but if not, how much should a plumber charge to replace the PRV ( I live in Southern California). Any help appreciate. THANKS!
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Is it a bad pressure reducing valve and are they easy to replace