Mysterious Propane "Leak"
Sorry about the length but I hope with enough details someone can explain what is a mystery to me. After 5 years or so my propane pigtails had hardened. Since the regulator was the original from...
Forum Discussion
I am going to mention something to maybe help diffuse something before it gets taken out of context, again.
Sometimes it is better to ask for clarification, then throwing darts in words.
I have been building machines for 40 years, in both the machine tool and food industries. Each industry has different slang and names for things that are used every day in their respective industry.
When brass machined fittings are called out, the ends of the fitting can have several names used by tradesmen.
NPT in the US I think we can all agree on, has tapered threads on pipe and fittings that require a thread sealant when making a pressure seal.
We also have other fittings that have tapered ends on them that are made out of brass, steel, plastic and other materials. The tapered ends are part of a compression seal setup that does "not" require sealant in the joint. The pipe or tube used to join with the tapered end fitting, has a flared taper on it to match the fitting and create a pressure tight seal without sealant.
Now to common brass fittings used in LP gas systems used in campers. There are a variety of them, some are all NPT tapered thread on all ends, while others can have only tapered flare ends or a combination of both. Here is where the joint naming can be miss read as the word taper shows up in both cases and may means something different pending ones background.
To me, a brass adapter fitting with a tapered end on it, I call it a flare fitting, not a tapered end fitting as that is from my background and industry I worked in. Other industries may call them out differently.
If any one has heard of Parker, they are one of the big fitting manufactures I used that they refer to them as flared fittings also. Again in the industry I have worked in. Other industries may call them something else.
There is 37 degree flare style made from steel for high pressure, https://ph.parker.com/us/en/37-flare-fittings
And there is 45 degree flare for lower pressure and the LP gas fittings we find in our campers. https://ph.parker.com/us/en/45-flare-fittings
A brass adapter fitting could have NPT tapered thread on one end and a 45 degree flared male or female connection on the other end. You use thread sealant on the NPT end and no sealant on the flared end.
While a flared fitting has a taper on the end, in the industries I come from, the taper word is not used in the call out, we use the word flare or flared end.
Hope this helps
John
Sometimes it is better to ask for clarification, then throwing darts in words.
I have been building machines for 40 years, in both the machine tool and food industries. Each industry has different slang and names for things that are used every day in their respective industry.
When brass machined fittings are called out, the ends of the fitting can have several names used by tradesmen.
NPT in the US I think we can all agree on, has tapered threads on pipe and fittings that require a thread sealant when making a pressure seal.
We also have other fittings that have tapered ends on them that are made out of brass, steel, plastic and other materials. The tapered ends are part of a compression seal setup that does "not" require sealant in the joint. The pipe or tube used to join with the tapered end fitting, has a flared taper on it to match the fitting and create a pressure tight seal without sealant.
Now to common brass fittings used in LP gas systems used in campers. There are a variety of them, some are all NPT tapered thread on all ends, while others can have only tapered flare ends or a combination of both. Here is where the joint naming can be miss read as the word taper shows up in both cases and may means something different pending ones background.
To me, a brass adapter fitting with a tapered end on it, I call it a flare fitting, not a tapered end fitting as that is from my background and industry I worked in. Other industries may call them out differently.
If any one has heard of Parker, they are one of the big fitting manufactures I used that they refer to them as flared fittings also. Again in the industry I have worked in. Other industries may call them something else.
There is 37 degree flare style made from steel for high pressure, https://ph.parker.com/us/en/37-flare-fittings
And there is 45 degree flare for lower pressure and the LP gas fittings we find in our campers. https://ph.parker.com/us/en/45-flare-fittings
A brass adapter fitting could have NPT tapered thread on one end and a 45 degree flared male or female connection on the other end. You use thread sealant on the NPT end and no sealant on the flared end.
While a flared fitting has a taper on the end, in the industries I come from, the taper word is not used in the call out, we use the word flare or flared end.
Hope this helps
John
