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Old 10-17-2018, 02:07 PM   #1
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Water filter canister replacement

Anybody know if there is a smaller replacement cap that would screw on in place of the full sized canister? Hate filling the cannister when Iím winterizing. Seems like a waste of antifreeze.
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Old 10-17-2018, 02:21 PM   #2
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Anybody know if there is a smaller replacement cap that would screw on in place of the full sized canister? Hate filling the cannister when I’m winterizing. Seems like a waste of antifreeze.
People here have reported filling the canister with either golf balls, marbles or an empty water/Gatorade bottle to minimize the volume.

There have also been reports of a plate/rubber disc that fits on the top of the canister to block the antifreeze from filling the canister. I suspect a Google search will find them.
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Old 10-17-2018, 08:30 PM   #3
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i found the bypass plate online but it was about $15 plus shipping. if you figure out the cost of the antifreeze needed to fill up the canister (i figured about $.50) vs the cost of getting the plate, you can buy antifreeze and fill the canister for many years before you would offset the cost of buying the plate.
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Old 10-17-2018, 09:16 PM   #4
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I agree with CHICKDOE.

Whatís wasteful is filling the water heater with antifreeze if you forget to put it in bypass. Even the smallest water heater is 6 gallons of RV antifreeze wasted.
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Old 10-17-2018, 10:56 PM   #5
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When I used the bypass plate it leaked, but they may be better now. I'll unscrew it and dump it in the toilet, not much leaks out of the lines, then put it back on. the outer canister say's do not freeze, I have had that crack in the past so I put a small bucket under it and store the canister in the house over winter.
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Old 10-18-2018, 09:06 AM   #6
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How about a piece of 2Ē PVC pipe and 2 end caps. Cut to match the length of the filter with end caps included. PVC cement the caps on and voila, a cheap and effective plug that is safe to use with RV antifreeze.
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Old 10-18-2018, 02:58 PM   #7
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How about a piece of 2” PVC pipe and 2 end caps. Cut to match the length of the filter with end caps included. PVC cement the caps on and voila, a cheap and effective plug that is safe to use with RV antifreeze.

An empty water bottle is cheaper. Or remove the filter and connect the lines together then use a exterior filter.
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Old 10-18-2018, 03:16 PM   #8
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If you have an FR1/KW1 like this, you may want to remove it before it cracks and leaks all over your trailer. Lots of threads here with reports of this happening.


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Replace the filter with a 1/2" coupler, about 67 cents at Home Depot.

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Then either rig up the FR1/KW1 with hose sections to use outside or use the blue Camco filters.

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Old 10-19-2018, 07:47 AM   #9
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An empty water bottle is cheaper. Or remove the filter and connect the lines together then use a exterior filter.

That is what I use. An empty water bottle but filled with sand so it does not get crushed by the water pressure. Tried the bypass plate, it leaked.
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Old 10-19-2018, 08:41 AM   #10
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Anybody know if there is a smaller replacement cap that would screw on in place of the full sized canister? Hate filling the cannister when Iím winterizing. Seems like a waste of antifreeze.
$9.71 @ rvupgrades.com,,, I think !!!
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Old 10-19-2018, 08:34 PM   #11
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After I finish winterizining, I pour the contents of the filter canister in the drain traps or toilet. Not wasted.
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Old 10-19-2018, 08:42 PM   #12
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I tried the bypass plate and it leaked for me as well.
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Old 10-19-2018, 08:51 PM   #13
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After I finish winterizining, I pour the contents of the filter canister in the drain traps or toilet. Not wasted.
I did this last year. It works no waste but it means you have to empty water out first and remove the filter, then fill with antifreeze then empty it again and you cannot leave lines pressurized as the directions state.

This year I removed the filter. About 4 fewer steps to winterize without it and no worrying about forgetting and filling the filter full of antifreeze.

I will say that I didn't notice a big decrease in antifreeze usage. Both ways took about 1.5gallons. Filters are about the same price too so cost is really a wash and it comes down to preference.
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Old 10-20-2018, 09:55 AM   #14
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I tried the bypass plate and it leaked for me as well.
It leaked for me the first time also,,, I took it apart and tried again and it did not leak the second time !!! They need to enlarge the rubber,,, it is not as large as the metal part !!! We should let the Co. know they leak !!!
I will !!!
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Old 10-20-2018, 10:19 AM   #15
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It leaked for me the first time also,,, I took it apart and tried again and it did not leak the second time !!! They need to enlarge the rubber,,, it is not as large as the metal part !!! We should let the Co. know they leak !!!

I will !!!



Sounds good, I only tried it once while I was winterizing didnít really fiddle with it. Rubber goes on top of metal plate or did I have it backwards?
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Old 10-20-2018, 07:42 PM   #16
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To keep from messing with the filter putting a towel under it and all that mess. Was under the seat just pulled it out and use a outside filter.
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Old 10-21-2018, 08:50 AM   #17
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Sounds good, I only tried it once while I was winterizing didnít really fiddle with it. Rubber goes on top of metal plate or did I have it backwards?
I believe that is the right way !!!
I looked @ it when I took it out,,, and you can see where the rubber pic needs to be larger !!! I went to RVupgraders and reviewed it,,, gave it 1 Star,,, and left a comment about the rubber being to small,,, when I get time I will see if I can get to the manufacture,,, it could be a Great product !!!

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Old 10-23-2018, 05:38 AM   #18
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I don't have the FR1/KW1 filter but there were enough threads warning about them when i bought my MH so I remove the filter and bracket every year when I winterize. I remove one of the filter's nipples and use it to join the two water lines and I'm done. Where it's located under the bed it's easier to just remove it on the bracket than try to remoe the cannister.
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Old 10-26-2018, 11:51 AM   #19
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The water bottle trick works well. I just fill the water bottle with antifreeze and reuse it each year. Keeps the bottle from being crushed and does not introduce any forms of contamination.
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Old 10-26-2018, 09:34 PM   #20
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by water bottle i am assuming you are referring to a 500 ml plastic bottle that drinking water comes in. i think they are just under 17 fluid ounces. i just bought antifreeze at $3.50/gal. that's $.0273/ounce. walmart has it cheaper. avoid using 17 ounces with the bottle and you have saved $.46 worth of antifreeze.

just wanted to put it in perspective
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