Outside faucet whines when under pressure

[MasterPlumbersKeymaster]

I have an outside faucet that starts to whine (a medium pitched “Hmmmmm” sound) when under pressure. Free flow, the noise goes away, but if I put a sprayer on the end of the hose, the faucet starts whining again. No vibration or hammering, just an annoying, annoying, annoying whine that I can hear all the way back into my house. Hopefully this is an easy fix. Can someone help???

[SylvanLMPParticipant]

You hit the nail on the head with the “free flow” comment.

You see by decreasing the orifice (sprayer) your increasing velocity (FPS) and any water in excess of 8 FPS should be avoided for the reason your stating noise and in certain conditions erosion can occur.

Since your taking about an outside hose bib this is a globe type of valve and it is perfectly OK to use this type of valve to throttle the volume down until the nose subsides

[GuestParticipant]

I’m sorry, I didn’t quite follow your last comment about the valve. Are you saying I should buy and install a different type of valve to correct the noise problem? Rebuild the present valve? I have tried throttling the valve, but it has no effect. Both barely open, full open, and anywhere in between it makes the noise as soon as I put back pressure on it.

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