[TheForge] pipe fittings was Re: forging questions

[CGRAF]

The only names I have ever used are obscene. Usually when I do not take 
note of the marking. Usually a bar cast in line with the flow on the hub 
of the lefty thread.

I had to go out and buy a set of dies for my threader to make a 
connection between two sections of wall hung radiation.

Generally I'd rather use a union. The threads on one end of the wall 
hung castings are threaded lefty.

Mike Graf

On 5/18/2015 7:41 AM, terry l. ridder wrote:
> Hello Mike;
>
> you told me this once several years ago.
> is there a proper name or term for the cast iron fittings that have
> right hand thread at one end and left hand thread at the other end?
>
> You said that they were used to install hot water heat radiators.
>
> I have a couple still laying around the garage somewhere.
> I seem to remember that I am down to a few couplings and a 90deg elbow
> and a 45 deg elbow.
>
> On Mon, 18 May 2015, CGRAF wrote:
>
>>
>>
>> From an anonymous source on yahoo answers:
>>
>> Nobody seems to get this right. I was a plumbing contractor for years
>> and would often pose this question to blank stares. I marveled that no
>> one in the biz could figure it out. Here's the real answer: Such
>> fittings are correctly called "st" which, because of the obvious and
>> apparent abbreviation stands for "street". But actually, it stands for
>> "spigot"...because in old drainage fittings (cast iron and clay)
>> fittings were either hub (bell) x hub (bell) which is a regular
>> fitting...or hub x spigot (for close work without a nipple in between
>> two fittings). "Spigot" was abbreviated "st" which eventually morphed
>> into "street" and that my friends...is the real story
>>
>> Sounds like a logical morph to me.
>> Rather like "one off" when we mean "one of a kind"
>>
>> Mike Graf
>>
>