[Farmall] Re: [AT] pipe threads

[Matthew]

UN oring is the same thread as JIC with a o-ring that sits in a seat in a 
block, or in some couplers or in the ports of hydraulic cylinders

its common, believe me in hydraulics there is not much that is proprietary 
in the hose and fittings department

pipe thread in US is NPT national pipe taper, similar to BSPT british 
standard pipe taper, ........only differents is one thread per inch, i tap 
the NPT threads to BSPT in my job, cause BSPT is more common here in 
NZ.........but ya can just screw em in.........

BSPP is the same thread as BSPT but parrallel and sealing is done by dowty 
seal between to flat surfaces

flat face is becoming more common in machinery, CNH use it, most new 
industrial like CAT etc use it, as prices go at the moment, the hoses end up 
being more expensive, and replace the o-rings each time you disturb them, 
they don't need to be re used, cause they leak,

komatsu do have there own style fittings, but hey, i have em in my truck, so 
does CAT, i have em too..........

more then one way to skin a cat in hydraulics, don't loose to much sleep 
over it, just find a good hydraulic shop, who don't employ idiots
----- Original Message ----- 
From: "Mike Sloane" <mikesloane at verizon.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>; 
"Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Monday, June 26, 2006 1:33 AM
Subject: [Farmall] Re: [AT] pipe threads


> Speaking of odd fittings, I am rebuilding an IH 2001 (early '60s era) 
> loader to go on my Farmall 560, and the fittings on the ends of the hoses 
> going to the cylinders look like JIC (straight threads and O rings), but I 
> am not convinced they are. Does anyone know if they are standard or 
> proprietary?
>
> Mike
>
> David Myers wrote:
>> Mike, that is my thinking on the letter designation
>> also (just a kinda made sense thing to me).  And to
>> add to my confusion is 'MTP' and 'FTP', I assume
>> meaning male and female taper pipe? (I have seen these
>> but are not sure if they're even a proper
>> designation).
>> JIC is a straight thread 37deg. taper SEAT fitting,
>> used for medium presssure hydraulics.  JIC is being
>> phased out in favor of the flat face O'ring fittings
>> (FFOR, For-Seal, and other trade names).  There is
>> also straight thread O'ring fittings, more commonly
>> used to mate to valve blocks etc.  Of course, I have
>> come across the dreaded 'Proprietary Fitting' WAY to
>> many times!  Hope this isn't the case.
>>
>> Dave Myers
>> Paw Paw, MI
>>
>>
>
> -- 
> Mike Sloane
> Allamuchy NJ
> <mikesloane at verizon.net>
> Website: <www.geocities.com/mikesloane>
> Images: <www.fotki.com/mikesloane>
>
> It is not bigotry to be certain we are right; but it is bigotry to be
> unable to imagine how we might possibly have gone wrong. -G.K. Chesterton,
> essayist and novelist (1874-1936)
>
>
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