Bob Landry wrote:
it makes no sense to me to protect the trailer and not the water hose supplying water to it.
Simple solution - just use a high pressure RV hose like his Valterra one. Around $15 for 25'.
If you want to put something inside, forget about an inline regulator. They don't really perform that well and are more of a flow restrictor. They have a small hole inside of around 1/16" dia. or less. They have a low flow rate of about 1 gpm. Since they work simply by restricting flow through a hole, the pressure will end up equalizing on both sides of the "regulator" and you can get high pressure inside your unit that can cause damage. The inline regulators inline regulators are more prone to plugging up from sediment and debris. Some info. on how inline regulators work: inline regulator performance
If you are going to put one inside, I would use a "proper" regulator like the Watts 263A or H560 that have a diaphragm inside acting against a spring. The 263A is good for 4 - 4.5 gpm and the H560 is good for 2 - 2.5 gpm. You should have a gauge with one of these so that you can see what the regulated pressure is.
The ease of installing one inside depends on where the city water inlet is and the availability of space to mount it. I installed a Watts 263A inside our TT and the city water inlet is under the kitchen sink which made connecting to the piping easy and there was plenty of space to mount the regulator at the rear of the lower cabinet. I also installed water filters too.
If you are going to use a regulator mounted inside, that means that your hose (to the cg faucet) is unprotected against high cg pressure. To handle that, you can get a high pressure rating hose like Valterra makes. It's available in 1/2" and 5/8" and the 5/8" is good for 200 psi. I would also upgrade the piping type inside between the city water inlet and regulator to handle higher pressure. Often there is braided hose with a hose fitting which may not be able to handle high pressure. I actually went a step further and installed brass pipe from our inlet to the regulator.
For info. and purchase, this is a good vendor: RV Water Filter Store
Photo 1 is the regulator setup below our sink. I installed a telltale gauge ahead of the regulator to see how high the pressure reached over the camping season. So far it's been up to 80 psi, but we haven't done much camping yet. Photo 2 shows where I mounted the gauge for the regulated pressure - at the HWT where I can easily view it by opening the door.
If you are going to put one inside, I would use a "proper" regulator like the Watts 263A or H560 that have a diaphragm inside acting against a spring. The 263A is good for 4 - 4.5 gpm and the H560 is good for 2 - 2.5 gpm. You should have a gauge with one of these so that you can see what the regulated pressure is.
The ease of installing one inside depends on where the city water inlet is and the availability of space to mount it. I installed a Watts 263A inside our TT and the city water inlet is under the kitchen sink which made connecting to the piping easy and there was plenty of space to mount the regulator at the rear of the lower cabinet. I also installed water filters too.
If you are going to use a regulator mounted inside, that means that your hose (to the cg faucet) is unprotected against high cg pressure. To handle that, you can get a high pressure rating hose like Valterra makes. It's available in 1/2" and 5/8" and the 5/8" is good for 200 psi. I would also upgrade the piping type inside between the city water inlet and regulator to handle higher pressure. Often there is braided hose with a hose fitting which may not be able to handle high pressure. I actually went a step further and installed brass pipe from our inlet to the regulator.
For info. and purchase, this is a good vendor: RV Water Filter Store
Photo 1 is the regulator setup below our sink. I installed a telltale gauge ahead of the regulator to see how high the pressure reached over the camping season. So far it's been up to 80 psi, but we haven't done much camping yet. Photo 2 shows where I mounted the gauge for the regulated pressure - at the HWT where I can easily view it by opening the door.
