The 3/4" plastic electrical conduit and it elbow was bought at Home Depot. The 1/4" flare brass fitting and adapter was bought at Lowes. Parts numbers may be found in the photos. The 3/4" conduit thread is not exact but will engage and deform the threads without damage to the POA. The pressure seal is maintained by a rubber O-ring I got from a set bought at Harbor Freight. If you look at the threads side by side to an actual adapter, you can see they are very close.
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