two propane regulators in line? - Fiberglass RV



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Old 07-10-2018, 11:48 AM   #1
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Name: Chuck
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two propane regulators in line?

Can one put two propane regulators in line? I want to feed a Coleman camp stove from the low pressure propane line on the trailer, but Coleman has its proprietary gas bottle fitting with regulator that would be a pain to replace or remove.

I'll try to be brief; here is my setup: I have the Scamp-installed two stage regulator mounted on the trailer tongue, with the high pressure pigtail coming directly from the tank to the input of the regulator. I have installed a flare "T" on the low pressure (output) side of the regulator and plumbed in two quick disconnect LP fittings (one also mounted on the tongue, and the other mounted between the door and the passenger side tire).

I want to use the new quick connect under the side of the trailer to feed the Coleman camp stove for when we want to cook/broil/grill outside. But that means the little chintzy Coleman regulator (which is integral to the grill) would be downstream from the low pressure side of the two stage regulator on the trailer. I don't think that setup would be dangerous, but would it even work?

Any experience out there? I'm guessing that if the Coleman regulator output is less than or equal to the main regulator output, all would be well. Thoughts?

Thanks in advance.

Chuck
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Old 07-10-2018, 12:47 PM   #2
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Quote:
Originally Posted by beardrum View Post
Can one put two propane regulators in line? I want to feed a Coleman camp stove from the low pressure propane line on the trailer, but Coleman has its proprietary gas bottle fitting with regulator that would be a pain to replace or remove.

I'll try to be brief; here is my setup: I have the Scamp-installed two stage regulator mounted on the trailer tongue, with the high pressure pigtail coming directly from the tank to the input of the regulator. I have installed a flare "T" on the low pressure (output) side of the regulator and plumbed in two quick disconnect LP fittings (one also mounted on the tongue, and the other mounted between the door and the passenger side tire).

I want to use the new quick connect under the side of the trailer to feed the Coleman camp stove for when we want to cook/broil/grill outside. But that means the little chintzy Coleman regulator (which is integral to the grill) would be downstream from the low pressure side of the two stage regulator on the trailer. I don't think that setup would be dangerous, but would it even work?

Any experience out there? I'm guessing that if the Coleman regulator output is less than or equal to the main regulator output, all would be well. Thoughts?

Thanks in advance.

Chuck
It will not work. The regulator on your trailer reduces propane under high pressure to pressure that will support a column of water approximately 11-inches high. The proprietary regulators used on Coleman and other similar camp stoves will support a column of water somewhat higher, NOT LOWER! If you “adapt” a Coleman type stove to run on what is considered a low pressure system (already regulated down to @11 inches, you will get hardly any flame and it would only serve as a “warmer.” And placing two regulators in series will reduce gas pressure to almost nothing. The Coleman must be used with the pressures that come directly out of a propane tank, either refillable or the small disposable ones. If you want to eliminate the small one pound disposable bottles, you need a tap before the regulator, or you can purchase a stove like the Camp Chef Ranger II, which can be used on a low pressure system.
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Old 07-11-2018, 11:40 AM   #3
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Adapter hose

12’ tank-to-Coleman adapter hose.

1. Unscrew hose from one of your propane tanks.
2. Screw on the “tank fitting” end of the hose.
3. Screw the “Coleman stove fitting” end of the hose onto the stove.

Reverse procedure when you pack up camp.

I had almost the same question. I was thinking Tees n fittings n valves. Slick plumbing etc. Someone suggested the made-for-the-job adapter hose and it’s perfect and simple.
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Old 07-11-2018, 12:20 PM   #4
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...I wanted to have a tap BUT, they don't work without serious modification of the appliance so, I decided to try one of these...it works...
...however, I found the hassle of carrying and setting up an extra tank with a propane "tree" to work better for my style of camping...I can run a lantern, a stove and a firepit all off the same tank...and not even worry about placing items anywhere but where I want them...of course driving a full sized PU w/cap gives me plenty of cargo space to carry an extra tank(or 2).........
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Old 07-11-2018, 01:34 PM   #5
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Yes, MadJack. Years ago as an asst scoutmaster on a winter jamboree with many other troops, I t was a campfire-free jamboree except for a group fire at night, to keep the woods from being stripped. I walked to all the camps and noted some elaborate “trees” and other setups. Our troop used gasoline stoves but the trend was toward propane. Many of these setups were also used for tailgaiting parties. Turkey fryers, lanterns, grills and all sorts of ingenius configurations. I’m not there yet but we’ll see !
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Old 07-14-2018, 03:26 PM   #6
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You can buy a flow through adapter that allows you to reconnect your 20# tank, and has a take off the same as a 1 pound propane bottle. Then run a hose from it to your Coleman. That’s what I do-, with the addition of a splitter near the Coleman so I can also use my bbq at the same time
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Old 07-14-2018, 06:18 PM   #7
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Propane proliferation !

Yes I have a 12’ hose that goes from 20 pound tank to Coleman.

I could put a tee in just before the coleman fitting to run something.
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Old 07-14-2018, 06:25 PM   #8
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I have a propane tree that I've used a couple times in 20 years. It fits on my 10 lb. propane tank and has three outlets. The one at the top is for a propane lantern. You need hoses for the other two to connect a BBQ and stove.
I found that the lantern was always in the wrong place and if you put it on a picnic table the lantern and tank cast a shadow right where you want the light.
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Old 07-15-2018, 04:33 AM   #9
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I run a 50’ hose from the adapter, then I use a purchased tee fitting with 1 pound propane tank threads on all three connections , then a three foot hose to my stove and barbecue
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Old 07-15-2018, 06:57 AM   #10
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Chuck, in my opinion you are on the right track with trying to use the low pressure system on your trailer for exterior appliances, but unfortunately you would have to abandon the Coleman stove, of which I have owned a few, and all were less than stellar performers.

For years I adapted to the high pressure propane by using a T off one bottle. This worked, but was somewhat limited. If you have the advantage of two tanks, you have to physically change the T from tank to tank. Another issue is accessing the trailer tanks to connect, having to remove a cover or open a hatch. Most connections do not use a quick connect either.

I carried a spare 20 lb bottle for a few months, and found it more of a hassle that carrying lots of the little green bottles. I dislike the wee bottles too as they are not very environmentally friendly, are pricey, and run out quick. I have a propane tree that I find is just gimmicky, one could make up a more useful device than that, and besides, you still have to lug a spare bottle when you already have them on your trailer.

I have had a low pressure disconnect now since 2009, and love it's easy of use and convenience. Being up and cooking in moments has it's advantages, and the simplicity of it can't be beat. I use a Y (similar to a T) connection to run two appliances at a time, or connect two hoses together should I want one a ways away from the trailer. I have a BBQ, stove and firepit I use with this system.

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.......or you can purchase a stove like the Camp Chef Ranger II.....
This is the camp stove I use, and can't say enough about it. The burners and control are fantastic. I can have water boiled quickly, and with the 3 rings of flame, simmering and even cooking are great. Unlike a Coleman that is near impossible to adjust to a real low simmer setting, this stove can be adjusted right down to any level you wish. When simmering dishes you get the whole area across the bottom of the pot bubbling, not just a ring around the outside, and a pancake comes out so evenly brown across the entire thing. Our Ranger II gets more use than all our other cooking appliances (BBQ, inside stove and oven), do together.
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Old 07-28-2018, 10:50 AM   #11
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I spent much of last week trying to make an older Primus stove work with my low pressure port. Once I had gas flowing it was still too low to produce a usable flame on the stove. I returned all my parts and will be going with a free standing stove and 5 lb bottle.
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Old 08-02-2018, 12:49 PM   #12
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With both my big fivers back when we full timed, and our little Scamp 19' fiver now, we carry a spare 20# propane cylinder in a milk crate in the truck bed to avoid carrying it sideways, which allows crud from the bottom to get in the valve and your regulator. I have always RV'd with a long bed on a 1 Ton diesel Ram dually towing the 36 foot HitchHiker and Challenger rigs we full timed in, and now a 3/4 ton diesel Ram with a long bed for our 19' Scamper. We used the Coleman adapter hose and the grill's regulator. I prefer my propane systems simple, stock, and leak proof.
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Old 12-27-2018, 07:11 PM   #13
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RV uses 11 WC, Coleman stoves us 14WC.
14 is much higher pressure, so the 11 will not let the Coleman stove do more than a low low flame, too low for cooking.
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Old 05-15-2019, 08:36 AM   #14
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I installed a quick coupling in my LP line under my Casita, I also put a ball valve there to to shut off the quick coupling from any leakage, etc. I can plug in other appliances like my LP grill and the Little Red Campfire off of this quick coupling and they both have there own regulators as they come from the factory. So yes I can use two regulators in line for my appliances. I not familiar how the pressure is on the Coleman grill with the small green bottles, it may be different and require a special regulator, but I have seen adapter kits to run your Coleman from a 20 pound LP tank, I would start there. So for me the two regulator system works, but if one regulator is set to either more or less pressure you are only going to get pressure from the lowest regulator, that could affect some appliances on the high setting on how they preform. If you just open the valve on a 20 pound LP tank you can see why you need a regulator on it, it comes out under high pressure, remember just cracking the valve slightly will show you why. Look into a conservation kit for you Coleman grill, this should tell you what is needed for proper operation.

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