Water regulator location

[Dennis66]

So I have been using a water regulator at the water spicket then using a water filter, Im starting to think the water regulator should be after the filter since the water filter restricts flow anyway. Have any of you put the regulator after the filter? My next trip Im planning on using the filter at spicket running a hose to my water bay and attaching the regulator there then a short hose to the rig. My guess is the filter will restrict flow below 65psi so the regulator can be set full open.

[howson]

So I have been using a water regulator at the water spicket then using a water filter, Im starting to think the water regulator should be after the filter since the water filter restricts flow anyway. Have any of you put the regulator after the filter? My next trip Im planning on using the filter at spicket running a hose to my water bay and attaching the regulator there then a short hose to the rig. My guess is the filter will restrict flow below 65psi so the regulator can be set full open.

Dang--never considered that configuration. Makes sense to me. Cate&Rob -- any reason this won't work?

[Lonestar]

Only issue I can see would be if water supply is very high pressure to begin with. This could put a lot of stress on the hose inline before the regulator. I have no idea what is the max recommended pressure on RV water hoses.

I just completed a project combining my regulator and filter together, running a 3' piece of hose between them and the water supply. Hopefully that short piece of hose will stand up to any increased pressure I get at the spigot.

[Hogdrv]

I put my regulator inside the door for my nautilus system. I was thinking the same thing about the filter, but also I figured I wouldn’t forget the regulator and it wouldn’t be as easy to steal.

Jim

[Dennis66]

I use zero G hoses and they withstand some high pressures

[RJAPCOK]

So I have been using a water regulator at the water spicket then using a water filter, Im starting to think the water regulator should be after the filter since the water filter restricts flow anyway. Have any of you put the regulator after the filter? My next trip Im planning on using the filter at spicket running a hose to my water bay and attaching the regulator there then a short hose to the rig. My guess is the filter will restrict flow below 65psi so the regulator can be set full open.

I have a 90 degree water pressure regulator attached directly to my city water connection on the docking station. From there I use a 10' piece of hose running down through the bottom of the storage bay. On the upstream side of that 10' hose is my water filter. From the water filter I use whatever length of hose I need to reach the supply hydrant. So the flow of water is, out of the supply hydrant, down my supply hose, into the water filter, through the short 10' hose, through my pressure regulator, and into the city water connection on the docking station.

I hope this is clear and helpful!
Bob

[Dennis66]

Yep that is exactly how Im going to hook up this next trip. I have a 4 foot hose anyway that I use when fill my tank so Im good on hoses

[Cate&Rob]

I do use a pressure regulator and put it right on the campground spigot, before the filter and hose. My logic is that it is protecting the filter and hose from excessive pressure . . . although, this is probably unlikely at most campgrounds.

As anyone with a "system" water pressure gauge knows . . . an inlet water pressure regulator makes no difference to the pressures reached within the RV water system. So, putting the regulator after the filter and hose (which could use the protection from excessive pressure) does not make a lot of sense. Once the water passes the RV inlet check valve, the pressure is no longer controlled by the pressure regulator. Normal water heating will often raise RV system water pressure well beyond 100 psi. If you encounter the (very common) water heater pressure relief drip that happens when the air dome in the water heater has been absorbed into the water . . . this happens at 140 psi .

Rob

[RJAPCOK]

I do use a pressure regulator and put it right on the campground spigot, before the filter and hose. My logic is that it is protecting the filter and hose from excessive pressure . . . although, this is probably unlikely at most campgrounds.

Once the water passes the RV inlet check valve, the pressure is no longer controlled by the pressure regulator.

Rob

I believe this would be true no matter where in the system the pressure regulator is located. So as I understand it, you are saying the ONLY advantage to a pressure regulator is to protect the supply hose and filter up to the inlet check valve on the RV. I had not thought of it that way.

Thanks!
Bob

[Cate&Rob]

I believe this would be true no matter where in the system the pressure regulator is located. So as I understand it, you are saying the ONLY advantage to a pressure regulator is to protect the supply hose and filter up to the inlet check valve on the RV. I had not thought of it that way.

Thanks!
Bob

Hi Bob,

That is exactly the way I see it. I have long been a proponent of the value of a "system" water pressure gauge. This can be T'd into any cold water line or even temporarily attached to the low point drain. For a few dollars, this gauge will tell you a lot about the functioning of your RV water system.

Rob

[StephenO]

I put our pressure regulator at the campground spigot, but that's only because it's cheap and leaks . Otherwise I would much rather keep it at the inlet to the trailer, since it would be much easier to not forget it when disconnecting. Several times I have disconnected our fresh water hose, only to realize when doing a final look around that I see I forgot the regulator. Although since it leaks, maybe it wouldn't be the end of the world to forget it....

[OurNewEra]

So I have been using a water regulator at the water spicket then using a water filter, Im starting to think the water regulator should be after the filter since the water filter restricts flow anyway. Have any of you put the regulator after the filter? My next trip Im planning on using the filter at spicket running a hose to my water bay and attaching the regulator there then a short hose to the rig. My guess is the filter will restrict flow below 65psi so the regulator can be set full open.

I just got my water bay setup and gave this some thought, probably too much thought. What I finally came up with is putting the filter cartridge in front of the regulator. On the inlet side. This, in my mind, does two things - 1) it will filter stuff so it won't clog the regulator, specifically the orifice on the pressure gauge, and 2) it will give you the actual pressure of the water entering the RV.

Here is a picture of my water bay setup. I also in life's a picture of using my 4' hose to fill up our tank at the campground fresh water fill. I didn't want the 4' hose when I purchased it. I wanted something a little shorter. But in this case it worked out perfectly.

[Cate&Rob]

Something to consider with a "semi-permanent" installation of the blue in-line filter is that these filters should be flushed each time before connecting to the RV water system. The "loose carbon" is most noticeable on the first use, resulting in a few seconds of black water, but this situation exists to a lesser extent every time the filter is bounced around during travel and then reconnected. I always flush the filter and hose before connecting to the RV. I would not want to put this loose carbon through the pressure regulator and into the RV water system.

Rob

[GrandDeal3]

Also be cognizant of the pressure limits of your filtration method. The blue cylinder ones do have a limit (65psi I think). I usually put the PR on at the Spigot to ensure the entire system is regulated. Good point on the filter potentially decreasing the pressure slightly also.

[TucsonJim]

I put our pressure regulator at the campground spigot, but that's only because it's cheap and leaks . Otherwise I would much rather keep it at the inlet to the trailer, since it would be much easier to not forget it when disconnecting. Several times I have disconnected our fresh water hose, only to realize when doing a final look around that I see I forgot the regulator. Although since it leaks, maybe it wouldn't be the end of the world to forget it....

I have a nice collection of "left over" brass regulators if you need a replacement.

Jim