Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 11-18-2021, 03:08 PM   #1
Junior Member
 
jdjeff's Avatar
 
Join Date: Feb 2021
Location: PA
Posts: 29
Another Newb Winterizing Question

I followed a 19FD owner video on how to winterize. Just wondering about something once the lines are all full of anti-freeze.



Since the pump is used to pressurize the system and all hot cold valves are bled and closed, the lines remain pressurized. Is it good to leave these lines pressurized until next year? Or did I miss a step to depressurize everything? If so, what is the best way to release the pressure on the plumbing without losing your fill of antifreeze?



This video here:
jdjeff is offline   Reply With Quote
Old 11-18-2021, 03:42 PM   #2
Site Team
 
Join Date: Sep 2014
Location: Northen IL
Posts: 6,503
If they can handle having water in them all summer long they can handle having antifreeze in them all winter.

I don't think it's anything to worry about.
Iwritecode is online now   Reply With Quote
Old 11-18-2021, 03:49 PM   #3
Junior Member
 
jdjeff's Avatar
 
Join Date: Feb 2021
Location: PA
Posts: 29
Quote:
Originally Posted by Iwritecode View Post
If they can handle having water in them all summer long they can handle having antifreeze in them all winter.

I don't think it's anything to worry about.

Not concerned about the liquid...it's the pressure. Are these lines able stay under constant pressure like that?
jdjeff is offline   Reply With Quote
Old 11-18-2021, 03:58 PM   #4
Site Team
 
Join Date: Sep 2014
Location: Northen IL
Posts: 6,503
Quote:
Originally Posted by jdjeff View Post
Not concerned about the liquid...it's the pressure. Are these lines able stay under constant pressure like that?
The pressure from the liquid being in there?

Its the same whether it's water or AF.
Iwritecode is online now   Reply With Quote
Old 11-18-2021, 04:03 PM   #5
Junior Member
 
jdjeff's Avatar
 
Join Date: Feb 2021
Location: PA
Posts: 29
Quote:
Originally Posted by Iwritecode View Post
The pressure from the liquid being in there?

Its the same whether it's water or AF.

Are these lines able stay under constant pressure like that?
jdjeff is offline   Reply With Quote
Old 11-18-2021, 04:06 PM   #6
Site Team
 
Join Date: Sep 2014
Location: Northen IL
Posts: 6,503
Quote:
Originally Posted by jdjeff View Post
Are these lines able stay under constant pressure like that?
Like I said before, yes. They do all summer.

If you're really worried about it you can blow all the AF out of your lines and leave them empty over the winter. There are some people that do that.

But it's not going to hurt them at all leaving the AF in.
Iwritecode is online now   Reply With Quote
Old 11-18-2021, 04:42 PM   #7
Site Team
 
Flybob's Avatar
 
Join Date: Oct 2014
Posts: 13,560
The pressure generated by the pump is independent of the liquid and the pump max pressure is well below the bursting pressure of the plumbing as stated above.
__________________

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
Flybob is offline   Reply With Quote
Old 11-18-2021, 04:56 PM   #8
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 15,395
Or... if YOU have concerns... turn off the pump and open a faucet to bleed off the pressure.

No problem either way.
__________________
_________________________________________
2016 Flagstaff 8529IKBS Diamond Package 5th Wheel•Goodyear Endurance Tires•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA

Days Camped: '17=38 '18=49 '19=58 '20=110 '21=116 '22=19
5picker is offline   Reply With Quote
Old 11-18-2021, 05:18 PM   #9
Junior Member
 
jdjeff's Avatar
 
Join Date: Feb 2021
Location: PA
Posts: 29
I picked up this trailer in september. I haven't had a chance to go out and use it yet. As it sat on my property, I relieved the pressure on the lines by opening up all the faucets and pushing in the check valve on the city water connection.



I do the same thing with my garden hose. I don't leave it pressured up even though it can handle 60 psi house pressure. My logic is it's just good practice and hopefully you can make the garden hose last longer. I guess it comes from years of working in an industrial setting where you "de-energize" pressurized lines for safety reasons and to keep from damaging equipment.


I'm using the same logic with the plastic lines on the camper. Of course they are pressure rated below max pump pressure. But since they are not copper lines and use plastic connections all over the place, my logic is that to minimize the potential for leaks over long periods or maintain the integrity of the plastic, it would be best to bleed pressure off when not in use. It just seems to make sense. It's why I wondered that once you get all the lines full of anti-freeze, should we bleed the pressure off from a high point in the system. High point to keep all lines full.


But nevermind, it is likely a non issue.
jdjeff is offline   Reply With Quote
Old 11-18-2021, 05:25 PM   #10
Site Team
 
Join Date: Sep 2014
Location: Northen IL
Posts: 6,503
Quote:
Originally Posted by jdjeff View Post
As it sat on my property, I relieved the pressure on the lines by opening up all the faucets and pushing in the check valve on the city water connection.
I actually just learned yesterday that this is not recommended as you can damage the check valve.

It's mentioned on the 2nd AND 4th pages here:

https://www.bandbmolders.com/wp-cont...structions.pdf
Iwritecode is online now   Reply With Quote
Old 11-19-2021, 10:42 AM   #11
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 5,167
Applies to high-end RVs

Quote:
Originally Posted by Iwritecode View Post
I actually just learned yesterday that this is not recommended as you can damage the check valve.

It's mentioned on the 2nd AND 4th pages here:

https://www.bandbmolders.com/wp-cont...structions.pdf
That obviously applies to high-end RVs with that exotic Nautilus panel. The OP has a 19FD which surely has the same simple spring-and-ball check valve as 90% of RVs do. I've manually released the city-water check valve (as advised on this very forum) on our trailers for years with no ill effects.
__________________
Larry

Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
Larry-NC is offline   Reply With Quote
Old 11-19-2021, 10:46 AM   #12
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 5,167
If you want...

Quote:
Originally Posted by jdjeff View Post
Are these lines able stay under constant pressure like that?
If you want to bleed off the pressure, simply turn OFF the pump and open one of the shower taps. A bit of anti-freeze will run out. Then turn the tap off. By using the shower (highest point), you can be sure that you're not draining the lines and admitting air (not that it matters).

You could actually leave the tap open, but you risk forgetting and turning on the water in the spring while it's open. If you store stuff in the shower as we do, it would get wet.
__________________
Larry

Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
Larry-NC is offline   Reply With Quote
Old 11-19-2021, 10:50 AM   #13
Site Team
 
Join Date: Sep 2014
Location: Northen IL
Posts: 6,503
Quote:
Originally Posted by Larry-NC View Post
That obviously applies to high-end RVs with that exotic Nautilus panel. The OP has a 19FD which surely has the same simple spring-and-ball check valve as 90% of RVs do. I've manually released the city-water check valve (as advised on this very forum) on our trailers for years with no ill effects.
Im pretty sure it's the same standard city water inlet that all rvs have.

I've seen a lot of advice given on this forum that I wouldn't necessarily follow and I've also read about things that people had been "doing for years with no problems"... until it was a problem.
Iwritecode is online now   Reply With Quote
Old 11-19-2021, 11:28 AM   #14
Junior Member
 
jdjeff's Avatar
 
Join Date: Feb 2021
Location: PA
Posts: 29
Quote:
Originally Posted by Larry-NC View Post
If you want to bleed off the pressure, simply turn OFF the pump and open one of the shower taps. A bit of anti-freeze will run out. Then turn the tap off. By using the shower (highest point), you can be sure that you're not draining the lines and admitting air (not that it matters).

You could actually leave the tap open, but you risk forgetting and turning on the water in the spring while it's open. If you store stuff in the shower as we do, it would get wet.

Thank you. That's the kind of info I was looking for. Take care.
jdjeff is offline   Reply With Quote
Old 12-02-2021, 07:41 PM   #15
Member
 
Join Date: Jan 2019
Posts: 49
We live in northern Arizona where it not unusual for a 45 degree increase in the temperature during the day. One day I turned on the bath faucet as the RV was sitting in the driveway and the blast of water hit the opposite wall. Since then I make it a point to leave the faucet open when the RV is parked releasing any tendency of pressure buildup.
Glampen is offline   Reply With Quote
Old 12-02-2021, 09:12 PM   #16
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 5,167
No need

Quote:
Originally Posted by Glampen View Post
We live in northern Arizona where it not unusual for a 45 degree increase in the temperature during the day. One day I turned on the bath faucet as the RV was sitting in the driveway and the blast of water hit the opposite wall. Since then I make it a point to leave the faucet open when the RV is parked releasing any tendency of pressure buildup.
No real need to do that. The water heater temperature pressure relief valve will release excess pressure for you quite nicely.

In fact, we see posts here occasionally from newbies who are concerned about a trickle from the water heater outside door or the TP valve and don't realize it's protecting them.

We also see posts from folks who insist on pressure regulators on city water inlets or air compressors used for winterizing. Their value is generally overstated. The fact is that the PEX piping and fittings are good for more than the 150 psi relief of the TP valve.
__________________
Larry

Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
Larry-NC is offline   Reply With Quote
Old 12-02-2021, 09:19 PM   #17
Senior Member
 
Join Date: Jan 2020
Posts: 2,144
Quote:
Originally Posted by Larry-NC View Post
No real need to do that. The water heater temperature pressure relief valve will release excess pressure for you quite nicely.

In fact, we see posts here occasionally from newbies who are concerned about a trickle from the water heater outside door or the TP valve and don't realize it's protecting them.

We also see posts from folks who insist on pressure regulators on city water inlets or air compressors used for winterizing. Their value is generally overstated. The fact is that the PEX piping and fittings are good for more than the 150 psi relief of the TP valve.
If the trailer is properly winterized with anti-freeze, the water heater should be drained and the bypass valves should have it isolated from the rest of the plumbing system, though. The water heater relief valve should be protecting an empty tank with the drain plug (anode rod) removed.
NavyLCDR is offline   Reply With Quote
Old 12-03-2021, 01:52 AM   #18
A Mile High & a Mile Deep
 
pcsdpo's Avatar
 
Join Date: Oct 2019
Posts: 100
Quote:
Originally Posted by 5picker View Post
Or... if YOU have concerns... turn off the pump and open a faucet to bleed off the pressure.

No problem either way.
X2 - the problem with water freezing is that is expands more the colder it gets. When it changes from a fluid to a solid (Ice), it doesn't flow like a liquid, but becomes a solid block that is increasing in volume the colder it gets.

Here's a science project to perform over the winter. Leave one of your RV anti-freeze jugs outside where your RV is and go take a look at it when it gets really cold. Mine turned to slush (which is probably what it is supposed to do in the plumbing. . . )

I always relieve the pressure on my system by opening hot and cold faucets. It can't hurt.
__________________
"I would rather wake up in the middle of nowhere than in any city on earth." - Steve McQueen
pcsdpo is offline   Reply With Quote
Old 12-03-2021, 09:40 AM   #19
Member
 
Join Date: Feb 2017
Posts: 84
Just leave the faucets open, if you loose antifreeze its okay, it will be replaced by air, which is fine...ideally what you could do if fill the pipes with antifreeze and then blow the lines with air so any low spots in by the pipes would be filled with antifreeze instead of water...Back to filling the system with antifreeze, there is no rule that says the system needs to be COMPLETELY full of antifreeze, it just needs to replace any water in the system that would freeze, so if the lines are blown out with air there might be some water left in the valves for the toilet, sinks, low spots etc and if that water is replaced with antifreeze its all good..Also don't forget to pour a little (a cup or so)antifreeze into the sink and shower drains for good luck
mrfikser is offline   Reply With Quote
Old 12-03-2021, 10:17 AM   #20
Senior Member
 
Join Date: Sep 2016
Location: Colorado
Posts: 1,168
The idea of the antifreeze is to displace any water in the lines. No reason to leave it under pressure, and as long as you have adequately pumped it through the system, you can open all of the drains and faucets and let it drain out. You don't need to keep the system "full". That will not add any protection, although it probably doesn't hurt anything. Most freeze damage occurs at fittings which can't take the expansion of freezing water. As long as the antifreeze has passed through, you won't have an issue.
__________________
2003 Duramax
2017 Crusader 315

2016 Boston Whaler Montauk 150
Former Montana owner
Colorado Cruiser, Over the Pass and Down the Hill
Comanchecreek is offline   Reply With Quote
Reply

Tags
question, winter, winterizing

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 03:50 PM.