water pressure regulators

Another fan of the Watts 263 series. Expensive but you won't regret it.

Using a Camco Stainless Steel RV Water Pressure Regulator. I like that this one is lead-free since it is used for drinking water. There might be advantages to one with a gauge, but this simple one works well for us.

263A for me. Full time 10+ years.

watts adjustable regulator.

Amazon is your friend. Get an inexpensive one with a gauge. The small inline ones restrict the flow too much for my liking.

There is no such thing as a flow reducer, only pressure regulators. The barrel shaped plastic and brass regulators can be restrictive and nearly all of that type are junk. You don't need to pay the premium price of a Watts, any of that type may be fine.

Do you want a true pressure regulator or just a pressure/flow reducer? You will pay in money for the first and you will pay for the latter many times as they typically do not last long before causing problems.

https://www.amazon.com/Camco-Pressure-Regulator-High-Pressure-40055/dp/B003BZD08U
I have one of these, works fine for me. If its not enough pressure, fill the tank and use the pump. I dont need one thats adjustable. You may require something diffent. I also have a plastic one. That gets used when i loose the other one!

Ill take 2 plastic ones instead. Wholly cow thats a lot.

Good ones are not cheap. Don't remember paying this much for mine but price of brass has increased. Any of the Watt's 263A models will give you good service and are rebuildable.
I have this one: 263A w/ oil filled gauge