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Central Illinois | Ron..NE ILL..10/48 - 11/12/2023 05:48
They put LP into NH3 tank?
Aren't they different valves?
Using anhydrous tanks for propane, " Mike SE IL " in 2009:
I think the answer is maybe ... sort of. Switching to propane means replacing the service valves and pressure reliefs. All the shut off valves must be changed to ones meeting code. The relief valves need changed. However, I seem to recall ... and can't find it right now ... there has been a change in regs and it is no longer legal to switch certain size tanks.
When switching it is ESSENTIAL that the tank be purged, especially when going from NH3 to LP. Mixing a little LP with the NH3 is no big deal. But mixing NH3 with LP causes 2 problems. First is the effect NH3 has on brass. It eats it up. Look at your heating system and see how much brass is in it. Flare nuts, valves, fittings, pieces inside regulators and appliance controls, a little NH3 can reak havoc on your home or business.
Several years ago Jim, the transport driver for the LP company I worked for was talking to another company's drive setting in line to be filled. Jim commented on how big a pain it was to switch the transport back to LP after hauling NH3. We purged the tank, blowing fresh air in the tank for days to purge fumes, then filled the tank with water, drained it, got inside and pressure washed it, squeegee'd out the water, then purged again ( this time with propane to purge the air) and put in methanol to absorb the remaining moisture. We did it right.
The other guy said "Aww, just open the valves, let off the pressure, and start hauling."
When Jim related this to the boss, the boss got a funny look on his face and said "THAT EXPLAINS IT!". Seems a bulk tank the other company hauled to had lost its relief valve ... a brass relief valve. I can't prove anything, but remember NH3 eats brass.
The second is burning LP and NH3 together produces a nasty very hazardous gas.
From the same thread, " Jon Hagen " : I believe the steel NH3 fittings, by law must be exchanged for brass parts when using the tank for propane. Brass will not make a spark when struck like steel will.
Link to entire thread;
https://talk.newagtalk.com/forums/thread-view.asp?tid=138080&Display...
Edited by Ron (Cen. IL.) 11/12/2023 06:58
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Is NH3 on its way out ?
