different pressures

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different pressures

Postby Taco Jeff » Sun Feb 12, 2012 6:01 pm

In the trailer I am building, the hot water heater, furnace and cooking stove take different propane pressures.
Is it ok to distribute @ high pressure and then regulate at each appliance?
Or what is the correct way to supply units that require different pressures.
Been searching this for quite some time.

Jeff
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Re: different pressures

Postby Dale M. » Sun Feb 12, 2012 9:45 pm

I would distribute at "pressure" of whatever "high pressure" appliance is (regulate at tank) and then if any other appliances use lower pressures just put low pressure regulators at "low pressure" appliance inlets...

Typically most appliances use 1/4 to 1/3 PSI (or about 13 inches water (IW))...

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Re: different pressures

Postby Martiangod » Mon Feb 13, 2012 12:12 am

What are the appliances
Are they regular RV aplliances?
If so the system will run at 11 inches of water column.
RV stoves have there own low preasure regulater, RV furnaces and water heaters run at 11 inches wc and are you using an RV regulator at the bottle?
If it ain't broke, fix it till it is

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Re: different pressures

Postby Taco Jeff » Mon Feb 20, 2012 7:10 pm

I have a 6 gallon Atwood water heater and a 7900 series Atwood furnace. Both are looking for around 13" WC. The problem I have is that I want an exterior stove from Partner Steel and Partner Steel is saying their stove runs @ 20 psi!
Your advice is greatly appreciated.

Jeff
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!"
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Re: different pressures

Postby Martiangod » Sun Feb 26, 2012 10:26 am

You would need one of these

http://www.campingworld.com/shopping/item/stay-flow/30341

Plumb straight through to a regulator for the Furnace and HWH and take the high preasure pigtail for the outside cooktop.
We sell a few of them for portable BBQ's. Not cheap but the safest way
If it ain't broke, fix it till it is

Chris

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Re: different pressures

Postby Taco Jeff » Sun Feb 26, 2012 9:51 pm

Thanks for the info.
One more thing, when I run the propane line to the water heater and FAU, should I put the regulator below the floor?
If so,how much effort should I put into keeping the regulator clean?
Thanks for the help.
Jeff
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!"
— Hunter S. Thompson

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Re: different pressures

Postby Taco Jeff » Sun Feb 26, 2012 10:19 pm

Or better yet, could I come off of the tank with a 20 PSI regulator, tee off at the W/H-FAU with a 11" wc regulator and then just run a quick disconnect at the rear of the trailer for the Partner Steel stove?
Thanks.
Jeff
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!"
— Hunter S. Thompson

2000 Landcruiser 100 series, 5X10 Haulmark Cargo Conversion, Heart attack survivor 2/22/2010
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Re: different pressures

Postby Martiangod » Sun Feb 26, 2012 10:29 pm

I'd have to see your setup, but I would not put reg below floor if it will pick up road debris.
Where is your tank mounted?
Keep regulator within a close proximity of the tank
I have seen high preasure manifold hoses up to 72" 's but I like to keep under 24" if at all possible, make sure you use a two stage rv type regulator and have the vent facing down.
DO NOT USE A BBQ REGULATOR!!!
If you need to mount the regulator sideways, buy a motorhome regulator with a 90' vent

Striaight for mounting vertical

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90' for mounting horizontal

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And you can get hoses up to 12' to come off the tee for your stove
But the kit i showed you comes with one and the tee has a shut off for the high preasure line, just perm mount to high preasure line with rubber coated clips along the frame to the back

http://www.campingworld.com/shopping/product/12-propane-hose-assembly-with-swivel-ends/3759

All the quick connects I've come across are low preasure and after 29 years working on RV's, I don't trust any fitting to not leak, so high preasureing a low preasure device is taboo
If it ain't broke, fix it till it is

Chris

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Re: different pressures

Postby Dale M. » Mon Feb 27, 2012 10:14 am

I tend to use this site when dealing with supplies and parts for propane regulation and piping systems.... So much more options the what RV places have to offer....

http://www.protanksupply.com/

And ...

http://www.mrheater.com/ProductFamily.aspx?catid=58

Dale
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You are free to ignore anything I say if you do not agree.

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