Difference between ORB and SAE

[billmiller54]

Me again,

In researching my little Kubota problem I've seen valves with both SAE and ORB (O-ring Boss) fittings.

I removed one work hose from my valve. The fitting has a bevel on the inside and it appears to have an O-ring in the base of the valve. The hose is marked 3/8 for it's ID. The OD of the thread is 5/8".

Is my little Kubota set up with ORB or SAE fittings?

Also is there any interchangabliity between the two types?
Thx.

 

[MtnViewRanch]

SAE is the thread type which is actually just a fine thread bolt thread. There are many types of SAE fittings, JIC, O-RING, FLAT FACE. I am guessing that it is an O-RING type of fitting, an SAE 6 in size.

Best to have a picture or 2. You know what they say, a picture is worth a thousand words.

 

[billmiller54]

See pics. (Ain't this new-fangled tech neat?)

The right side pic shows the entire valve.

The left pic shows a hose end and the swivel adapter thats screwed into the valve base casting.

The middle pic shows the threads on the end of the hose and the O-ring at the bottom of the swivel adapter. I am not able to remove the adapter from the casting, need a new thinner wrench to remove it.

I am trying to determine the ports I have on the casting so I know what kind of replacement control valve to buy.

 

[MtnViewRanch]

If the fitting in the casting takes a 7/8" wrench, then you are looking at an SAE O-RING 8 fitting.

 

[J_J]

ORB straight thread

Straight Thread O-Ring Fittings > Discount Hydraulic Hose.com

NPT

Steel Pipe Fittings (NPTF) > Discount Hydraulic Hose.com

JIC straight thread except for the end which is tapered to about 37 degrees

JIC 37° Hydraulic Tube Fittings > Discount Hydraulic Hose.com

ORFS O_RING face seal

O-Ring Face Seal (ORFS) Tube Fittings > Discount Hydraulic Hose.com


You simply have to match up your hose with the type thread and style on the valve.

You might get away with no adapter or one adapter or it may take two fittings for the connection to the valve.

 

[SPYDERLK]

ORB the male has the O-ring.
larry

 

[oldnslo]

Billmiller 54,
Your hose ends appear to be 3/8 NPT & they should NOT have an O-ring in them. The hose end should have an internal angle of 30 degrees and the swivel fitting has the 30 degree cone. If the hose ends are not tapered on the inside they will not seal well on those swivel fittings. Might be why there is O-rings in them.

The mating connector that screws into the valve body might be SAE ORB (Society of Automotive Engineers O-ring Boss).
#6 SAE is 9/16-18 thread
#8 SAE is 3/4 - 16 thread

It may also be ISO 6149 which is the metric version of SAE ORB style. They look very similar to american SAE ports.

 

[pjbci]

Oldnslo nailed it. That is pipe thread and there should not be an o-ring in there.

 

[Zebrafive]

Agree, hose threads look like tapered pipe threads. Are you original owner? Wondering if the O-Ring was factory, but doubt it is.

I needed a thin wrench for a quick coupler. Bought a set at Harbor Freight just for this use.

 

[gengine]

Oldnslo nailed it. That is pipe thread and there should not be an o-ring in there.

I agree. Both are pipe thread, and the o-ring shouldn't be in there. The cone in the male fitting is supposed to create a seal inside the hose end.