Gas lines

Question

We have remolded or 1984 Southwind and installed an on demand water heater. The unit came with instructions on how to install on your own but am stuck on what parts to get and where. Because the existing copper pipe will not bend to reach the unit we will have to cut and flare that line and add a shut off vale and new line to the unit. I am not sure what type of shut of valve I should get nor what type of hose to get from old copper line to the unit..... braided? Also not sure on what size fittings to get once I flare the copper line.

What is the standard size of the copper lines in these old MH's? I have a few ideas but not sure I am on the right track.

chris_bryant · Answer

3/8" refrigeration grade copper is standard with 45 degree single or double flare. For a valve, look for an AGA certification, it will be listed for gas.
The existing unit should already have a flared end on the supply line, so I would buy the valve with 3/8 flare connections, then add a new length of copper to the new water heater.

beemerphile1 · Answer

Chris Bryant wrote:3/8" refrigeration grade copper is standard with 45 degree single or double flare. For a valve, look for an AGA certification, it will be listed for gas. The existing unit should already have a flared end on the supply line, so I would buy the valve with 3/8 flare connections, then add a new length of copper to the new water heater.What he said.I would add to make sure you realize compression fittings are not allowed, only threaded pipe or flared copper.

dutch_12078 · Answer

If you can find one in the appropriate size, the flexible hoses sold for residential gas water heater and gas dryer hook ups may make installation easier.

midnightsadie · Answer

and remember do a good soap test and each fitting after your done.

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