Water Pressure Regulators

[rvnubee]

I am researching water pressure regulators for my new motorhome. I am reading that this is recommended to prevent potential damage due to high water pressure sources. Is it necessary to get an adjustable unit or is one that I found pre-set at 40-50 PSI good enough?

[wa8yxm]

Regarding the argument on "Flow restrictors" or regulators.

I do not listen to gossip or rumor or lies. but put a GAUGE on the thing

Hydrant/Faucet--Regulator--Y--RV and Gauge.. A genuine WATTS pressure gauge (usually I've used other brands)

The 3/4" cylinders are REGULATORS. oh they restrict flow too but from static to about 1/2 to 1 Gallon per minute they hold the pressure at the pre set Usually about 45PSI. no sign that they let it increase less they are old and wore out.

Problem is shower takes TWO Gallons per minute.

You want a "Flow Restrictor" A washer. that's all it is, a washer.

[mike-s]

Boomerweps wrote:

Lynnmor wrote:

Boomerweps wrote:
Many of the so-called pressure regulators are really only FLOW restrictors.

I have never seen a "flow restrictor", the cheap barrel shaped pressure regulators often reduce flow and they might fail, but they still are a regulator.

Yes, they slow the flow which limits the pressure going through them. However once you stop the flow of water, the pressure before and after that type (under $10) unit will equalize through the small openings that restrict the flow.

You might want to recheck the source of that incorrect info.

Here's a test of regulators, including both one of the <$7 Camco 40055's and an expensive Watts adjustable one. They all regulate the pressure, although some are better than others. None, including the cheapest, are simple flow regulators.

[Cummins12V98]

^^^^^ Those types or regulators are a JOKE.

[Lynnmor]

Boomerweps wrote:


Yes, they slow the flow which limits the pressure going through them. However once you stop the flow of water, the pressure before and after that type (under $10) unit will equalize through the small openings that restrict the flow. So whatever the source pressure is, that will become the static pressure in the RV system. Fluid dynamics.
The more expensive RV water pressure regulators, which can be had for as low as $35-40, actually shut off the flow and pressure increase once the set pressure is reached. When the pressure on the use side of the system goes below the set point, the regulator allows flow to regain that set pressure.
These type water pressure regulators are often used in homes that have high pressure water supplies. I have seen semi-rigid plastic faucet supply lines blow out that used compression washers supposed to dig into the pipes on a home system, home in the valley, town tank on the hill a couple hundred feet higher.

Could you supply a link to one of these "restrictors"?

Is this what you are talking about?

[et2]

rvnubee wrote:
It looks like this regulator is connected to the RV park hookup. What kind of adapter will I need to connect? Standard water hose connector or is there a quick release type?

Most of these ( including what I linked) should adapt to anywhere you choose to put it along the hose connection. Connect to Campground water supply then hook your hose to that. Or if you want you can connect it to your connection on your rv and the hose to that. This way your can have it locked in your MH bay to prevent theft while using. Some, like us run a "T" off the park supply and I put the regulator on the T end going to the motor home fresh water. The other T is not regulated and goes to my sewage ( doesn't use MH plumbing) to get as mush pressure as I can.

[Boomerweps]

Lynnmor wrote:

Boomerweps wrote:
Many of the so-called pressure regulators are really only FLOW restrictors. The pressure out the faucet is limited by the flow. Once you shut off the water in the TT faucet, the pressure will build through the FLOW restrictor. If it is high enough pressure, it can still blow a hose or fitting. Once the fitting blows, then your leak in the trailer will be restricted to the 50-60# flow of the device ;(
Hence the recommendation, ALWAYS shut off your water AT THE SOURCE when away from your RV.

I have never seen a "flow restrictor", the cheap barrel shaped pressure regulators often reduce flow and they might fail, but they still are a regulator.

Yes, they slow the flow which limits the pressure going through them. However once you stop the flow of water, the pressure before and after that type (under $10) unit will equalize through the small openings that restrict the flow. So whatever the source pressure is, that will become the static pressure in the RV system. Fluid dynamics.
The more expensive RV water pressure regulators, which can be had for as low as $35-40, actually shut off the flow and pressure increase once the set pressure is reached. When the pressure on the use side of the system goes below the set point, the regulator allows flow to regain that set pressure.
These type water pressure regulators are often used in homes that have high pressure water supplies. I have seen semi-rigid plastic faucet supply lines blow out that used compression washers supposed to dig into the pipes on a home system, home in the valley, town tank on the hill a couple hundred feet higher.

[rvnubee]

It looks like this regulator is connected to the RV park hookup. What kind of adapter will I need to connect? Standard water hose connector or is there a quick release type?

[T18skyguy]

The best portable adjustable regulator on the market IMO is the Rinaldo available on Amazon. Very high quality and real nice oil filled gauge. Important especially if you have a tankless unit,

[rvnubee]

I have received SO MUCH valuable information and advise. I am learning so much from this. You guys are great! I hope to learn enough from my own experiences to pay it forward someday.

[Cummins12V98]

Buy a quality WATTS regulator set to 60 and forget about it.

[Lynnmor]

Boomerweps wrote:
Many of the so-called pressure regulators are really only FLOW restrictors. The pressure out the faucet is limited by the flow. Once you shut off the water in the TT faucet, the pressure will build through the FLOW restrictor. If it is high enough pressure, it can still blow a hose or fitting. Once the fitting blows, then your leak in the trailer will be restricted to the 50-60# flow of the device ;(
Hence the recommendation, ALWAYS shut off your water AT THE SOURCE when away from your RV.

I have never seen a "flow restrictor", the cheap barrel shaped pressure regulators often reduce flow and they might fail, but they still are a regulator.

[Boomerweps]

Many of the so-called pressure regulators are really only FLOW restrictors. The pressure out the faucet is limited by the flow. Once you shut off the water in the TT faucet, the pressure will build through the FLOW restrictor. If it is high enough pressure, it can still blow a hose or fitting. Once the fitting blows, then your leak in the trailer will be restricted to the 50-60# flow of the device ;(
Hence the recommendation, ALWAYS shut off your water AT THE SOURCE when away from your RV.

[Bobbo]

I got a Watts adjustable because of its much higher flow rate. Adjust it once, then leave it alone.

[Dave_H_M]

My Watts with I think has 3/4 inch passage for high flow has been working fine set at 45 for years, I would say 10 but that seems impossible.