What is this hose fitting?

[Dave Sherman]

Trying to find an elbow fitting that mates with this. It's a hydraulic hose that goes on a 1947 Lincoln power window pump. Is it NPT?

 

[mk378]

That looks like inverted flare (male threads on the tube side, like brake lines have). The nut spins on the tube, right?

 

[Dave Sherman]

Yes, the threaded part turns, and the tubing it turns on is flared.

 

[clinebarger]

SAE Inverted Flare, You can find charts online to figure out the size.

 

[Dave Sherman]

Many thanks! Long story, but the elbow that came with the hose left with the pump that was to be rebuilt. The pump became a core. Oops.

 

[grasscutter]

Looks like 5/8"-18.

 

[mk378]

The threads on flare fittings are typically standard bolt sizes, but that is not how they catalog the fittings. They are specified by the OD of the tube (before flaring).

 

[50yr Street Mech]

Imagine that in a 2026 model of any vehicle. Hydraulic power windows. Bet they would outlast an electric motor power window any day !

 

[Dave Sherman]

Revisiting this, I have found out I needed a 1/2" x 20 inverted flare on both ends. Now here's the rub. I found a Parker store nearby and they were able to make a new hose that has those fittings on both ends. I had hoped they had a 90 degree fitting, but no dice. Looking on Summit Racing and Advance Auto I found 1/2" x 20 elbow fittings that go to a hose barb, but it seems those are intended for low pressure fuel line fittings and explicitly state that 60 PSI is the max. I had Parker make the hose a few inches longer than I needed, but I'd like to find a 90 degree elbow. That seems to be a hard thing to find though, all the elbow fittings I'm finding on Parker's site or on McMaster-Carr convert to other types of fittings, but I just want to turn 90 degrees.

 

[JDenyer232]

Revisiting this, I have found out I needed a 1/2" x 20 inverted flare on both ends. Now here's the rub. I found a Parker store nearby and they were able to make a new hose that has those fittings on both ends. I had hoped they had a 90 degree fitting, but no dice. Looking on Summit Racing and Advance Auto I found 1/2" x 20 elbow fittings that go to a hose barb, but it seems those are intended for low pressure fuel line fittings and explicitly state that 60 PSI is the max. I had Parker make the hose a few inches longer than I needed, but I'd like to find a 90 degree elbow. That seems to be a hard thing to find though, all the elbow fittings I'm finding on Parker's site or on McMaster-Carr convert to other types of fittings, but I just want to turn 90 degrees.

I looked and couldn't find it either. You could take a small block of brass and drill and tap it to make you're own adapter with 2 fittings depending on how well equipped your shop is. I know they sell 1/2 x 20 inverted flare to npt. Take a small block of brass, drill 2 holes that intersect in the middle and run an npt tap thru each hole. Screw in the fittings and you would have your adapter. Just a thought if you really need that 90 degree fitting.