Camco Manufacturing Inc. 40053 Water Pressure Regulator - Brass

I bought this because I have well over 60lbs of water pressure. I couldn't keep a garden hose because of it. I put it on and haven't lost one since.

I'm actually going to purchase more for all of my faucets outside.

I bought 3 of these and they stop all flow if the input pressure is less than the 40/50 PSI pre-set rating. Maybe they work fine at higher pressures but for RV use, where one does not know the input pressure, they seem pretty worthless.