JIC or NPT?

   / JIC or NPT? #1  

Hilbilly

Veteran Member
Joined
Dec 21, 2014
Messages
1,243
Location
Barriere, BC
Tractor
Kubota Grand L6060HSTCC
Is there a way to tell what type fittings are on the hydraulic hose ends without taking them apart?

I'm picking up an electric over hydraulic diverter valve tomorrow (want to add a grapple down the road) and would like to get some hoses at the same time but I can't tell what fittings are on the ends of the hoses that are on the tractor now.
 
   / JIC or NPT? #2  
Can you post pics? I bet I could give a 99% confident answer from a clear picture. Look at the female side to see if there's a slip collar, in which case it would be JIC.
 
   / JIC or NPT?
  • Thread Starter
#3  
Not sure what to look for, so here are some pics.
DSCN1863.JPG
DSCN1862.JPG
DSCN1861.JPG
 
   / JIC or NPT? #4  
First pic appears to be ORB male on the hose. (I'd expect to see some thread exposed if it was NPT).

Second pic appears to be JIC female on the hoses.

Third pic appears to be JIC male on the hoses.

Let's get a few other opinions to confirm.....
 
   / JIC or NPT? #5  
First pic appears to be ORB male on the hose. (I'd expect to see some thread exposed if it was NPT).

Second pic appears to be JIC female on the hoses.

Third pic appears to be JIC male on the hoses.

Let's get a few other opinions to confirm.....

Ditto what s219 stated.
 
   / JIC or NPT?
  • Thread Starter
#6  
Thanks s219, and Tx Jim

I have the pics in reverse order but they are as follows;
pic 3 = where loader valve lines connect to solid lines that run forward along loader arms.
pic 2 = where supply line on loader cross arm splits to serve the bucket cylinders.
pic 1 = connection to bucket cylinder.

I was hoping that all the connections would be the same. Oh well. I may have to take one of the lines with me to make sure I get the right fittings. Don't want to make too many trips to the city, since it's an hour each way.
 
   / JIC or NPT? #7  
Just break the lines and see. Relieve the pressure (tractor not running) and move the loader valve through all it's positions a few times. You'll only need a second or so and a small rag to catch the drips. You could also ask the dealer and he's not sure, go to the parts counter and ask for a hyd line (for your machine) to look at.
 
   / JIC or NPT? #8  
Ditto what others said on what you got.

IF you dont want to take hoses with you, you can break them apart and take some measurements of the threads, there are charts online.

Or you can look all around the fitting. There should be a - (dash) number on there somewhere. Like a -08 or -10.

Those dash sizes are nominal sizes in 1/16ths. So a -08 would be 1/2". Usually stamped somewhere around the hex where you put the wrench.
 
   / JIC or NPT? #9  
Being Massey Ferguson is it possible these are metric? There are metric 30 degree flare fittings that look very similar to the JIC 37 degree flare fittings.

Like LD1 stated Measure them to be sure or lok for the dash numbers.
 
   / JIC or NPT? #10  
I would GUESS that the first photo is an SAE fitting- with an O ring. Check out Surplus Center's online info- it's pretty thorough and helps illustrate the 3 types of fittings used in most instances.
 
   / JIC or NPT?
  • Thread Starter
#11  
Thanks everyone. I was away for a few days but am back now and have decided that I will take one of the hoses with me when I go to town, just to make sure I get the right fittings.
 
   / JIC or NPT? #12  
Being Massey Ferguson is it possible these are metric? There are metric 30 degree flare fittings that look very similar to the JIC 37 degree flare fittings.

I'm in a metric country but have never seen a flared metric fitting. Some blocks use metric threads but they are not very common. Most common here is BSP, then JIC. BSP has 30 deg flares but they are negative (inverted to JIC ) so are easy to identify. There seems to be a JIS fitting with 30 deg positive flare and BSP threads, maybe thats what you mean? I have never found one IRL.

BR/Marcus
 
   / JIC or NPT? #13  
I'm in a metric country but have never seen a flared metric fitting. Some blocks use metric threads but they are not very common. Most common here is BSP, then JIC. BSP has 30 deg flares but they are negative (inverted to JIC ) so are easy to identify. There seems to be a JIS fitting with 30 deg positive flare and BSP threads, maybe thats what you mean? I have never found one IRL.

BR/Marcus

Komatsu uses a variation of JIS 30 that uses the same 30 degree cone, but metric thread sizes. Usually, this fitting is referred to as "Komatsu" but I have also heard people call it "Metric JIS."
 

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