Need some help with a fitting indentification
- Thread starter biggziff
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oldnslo
Super Member
What size are the threads in body below the the banjo bolt adapter where it screws into the valve body? Will the nipple screw into the valve body?
ORFS Do not interchange with banjo fittings.
ORFS have an O-ring on the face of them to seal to the fitting face.
ORFS Do not interchange with banjo fittings.
ORFS have an O-ring on the face of them to seal to the fitting face.
The nipple will NOT thread into the valve body or we couldn't be having this discussion.
The banjo bolts I have on every fitting I've removed on this tractor look like the one in the image I posted. Machined face, black, hard o-ring. I realize the female side of the hard pipe that the banjo bolt goes through has a recess for the O-ring. That's why I'm saying I believe I need an ORFS fitting (male/male nipple) to mount to the valve body that is male thread on one end and 1/2" male JIC on the other. I think the valve body female threads are 15mm (plus or minus) so maybe 5/8" NPT?
oldnslo
Super Member
try doing a search for BSPP seal washers.
The threads on the banjo bolt are not NPT (tapered threads) they are straight threads typically BSPP or metric.
for reference:
1/4 BSPP is approximately 13.2 mm OD
3/8 BSPP is approximately 16.5 mm OD
The threads on the banjo bolt are not NPT (tapered threads) they are straight threads typically BSPP or metric.
for reference:
1/4 BSPP is approximately 13.2 mm OD
3/8 BSPP is approximately 16.5 mm OD
oldnslo
Super Member
Discount hydraulic hose is a contributor to this site and they have a fitting identification chart on there website. I believe it provides a visual aid with dimensions
From memory 3/8 BSPP has 19 threads/ inch
I believe that both 14 & 16 mm are 1.5 pitch so around 17 threads/ inch
Close enough that a thread gauge is almost required
A good hydraulic supplier should have the equipment to verify what you have
From memory 3/8 BSPP has 19 threads/ inch
I believe that both 14 & 16 mm are 1.5 pitch so around 17 threads/ inch
Close enough that a thread gauge is almost required
A good hydraulic supplier should have the equipment to verify what you have
aczlan
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Nope, it's a ORB fitting, to go to JIC you will need something like these: 64 | JIC 37deg x Straight Thread (ORB)
Or just a new oring such as this: 4 | Buna N O-Ring for Straight Thread (ORB)
Aaron Z
So, before I visit our local hydraulic shop tomorrow, I took some pics and measurements of the fittings, etc. in case anyone cares.
You can see on the gray valve body there is a deep recess and chamfer for the o-ring which lives in a groove on the male side of the male-female adapter that was there from OEM. On the male-male nipple supplied in the kit, you can see an o-ring in a groove, but it's much softer and there is no recess or chamfer on the female side of the male-female adapter to accept the o-ring which is why it tears and deforms. If the male-male nipple supplied in the kit had been the correct size (same on both ends) this likely wouldn't have been an issue. Remove the adapter, thread the nipple in and away we go.
An annoying setback that was unnecessary, but hopefully, it'll be in the rearview after tomorrow.
Thanks for the help. I'm learning a lot.
You can see on the gray valve body there is a deep recess and chamfer for the o-ring which lives in a groove on the male side of the male-female adapter that was there from OEM. On the male-male nipple supplied in the kit, you can see an o-ring in a groove, but it's much softer and there is no recess or chamfer on the female side of the male-female adapter to accept the o-ring which is why it tears and deforms. If the male-male nipple supplied in the kit had been the correct size (same on both ends) this likely wouldn't have been an issue. Remove the adapter, thread the nipple in and away we go.
An annoying setback that was unnecessary, but hopefully, it'll be in the rearview after tomorrow.
Thanks for the help. I'm learning a lot.
oldnslo
Super Member
The fitting that screws into the valve body looks an O-ring boss style fitting. These can be either SAE American threads or metric ISO 6149. Ports styles are very similar
#6 SAE is 9/16-18 threads
#8 SAE is 3/4-16 threads
Metric sizes
M12x 1.5
M14x 1.5
M16x 1.5
M18 x 1.5
#6 SAE is 9/16-18 threads
#8 SAE is 3/4-16 threads
Metric sizes
M12x 1.5
M14x 1.5
M16x 1.5
M18 x 1.5
