To accomplish what I did you will need the following components:
Item Part number Description Can be found
1/4" Male Pipe Thread x Full Flow Male Plug. F276281 Quick disconnect Camping World or Amazon
http://www.campingworld.com/shopping...low-plug/30332
Camco RV Horizontal Two Stage Propane Regulator with POL 59333 Regulator Camping World or Amazon
http://www.amazon.com/Camco-59333-Ho...ef=pd_sim_lg_1
21st Century R04 22-Inch Propane Hose 3/8-Inch Male Pipe Thread R04 Hose Amazon
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
Watts 3/8-in x 1/4-in Brass Pipe Fitting LFA765 3/8 to Ό adapter Lowes or Home Depot
http://www.lowes.com/pd_92557-104-LF...npt&facetInfo=
Watts 1/4 Brass Pipe Fitting LFA739 Street Elbow Lowes or Home Depot
http://www.lowes.com/pd_88972-104-LF...3D1&facetInfo=
3/8 Brass Gas ball shutoff valve M88C 3/8 Ball Valve Lowes or Home Depot
http://www.lowes.com/pd_23152-33599-...lve&facetInfo=
3/8 brass hex nipple x 2 LFA783 Brass nipple Lowes or Home Depot
http://www.lowes.com/pd_92338-104-LF...ple&facetInfo=
Natural gas or propane certified Teflon tape
Pipe dope
Assorted pipe and other wrenches
You likely will need the following depending on the distance to your large propane tank.
Item Part number Description Can be found
12' Propane Hose F273702 POL to disposable hose Camping World
Propane Adapter F276171 Disposable to POL adapter Camping World
http://www.campingworld.com/shopping...-adapter/24028
Start by figuring out how far away you want to position your large propane tank. This will determine the length of the high pressure hose you will need. You really do not want to extend the low pressure side very much as it will quickly lose pressure. Use the high pressure side to complete the long run and keep the low pressure run as short as practical. Once you have figured out where you want to have your large tank then start with the long hose F273702 and connect it to the adapter F276171 next connect the adapter to the regulator 59333. Now you will need to assemble the various fittings. These fittings all are NPT and require thread tape and I always use pipe dope as well. Keep in mind that you are working with brass which is very soft and you can ruin the threads if you wrench on it too hard. When doing plumbing I usually dry fit everything before adding thread tape and pipe dope. This allows me to correct any assembly mistakes before I have gummed up the threads. Connect the 3/8 nipple to the output side of the regulator. Connect that to the 3/8 ball valve. Next connect the other end of the gas valve to another hex nipple. Connect the hex nipple to the 3/8 to Ό reducing bell LFA765. Next connect the Ό street elbow to the reducing bell. Finally connect the 1/4 quick disconnect F276281. Your specific application may require some different parts or additional parts but the concept is the same. I strongly recommend that you soap check your connections to ensure a leak free connection.
This method of connecting to your RV (Travel Trailer, Fifth Wheel, or Motorhome) allows you to quickly and safely disconnect should you wish to leave. Simply turn on the main propane valve in your coach at the factory propane tanks. Next turn off the propane at the large tank(s). Turn off the valve installed downstream of the regulator. Turn off the valve on the coach. Disconnect the quick disconnect. Reverse to reconnect. I use a 100# propane tank that I take to the store to have filled. I save quite a lot of money as the local stores usually give significant discounts when filling that much propane. My 100# tank usually lasts 4 6 weeks in the winter. That saves me time! I will post pictures of my setup later.