any idea where I could get an 1/8" BSP to -4 AN adapter?

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jlee

Lifer
Sep 12, 2001
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I need to run a line off my stock oil pressure sensor port...need 1/8" BSPT male to a braided hose (-4 AN or -6 AN) to 1/8" female NPT.

I can find BSPT/NPT adapters and NPT/AN fittings, but I'm not having much luck finding a straight BSPT to -AN hose fitting. Does this exist?
 

Sukhoi

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Dec 5, 1999
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I don't understand what you need. What does 1/8" female NPT have to do with anything? You are only looking for a 1/8" BSPT male to -4 AN male , correct?
 

jlee

Lifer
Sep 12, 2001
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I don't understand what you need. What does 1/8" female NPT have to do with anything? You are only looking for a 1/8" BSPT male to -4 AN male , correct?

1/8" NPT is for a remotely mounted oil pressure gauge sending unit. I don't want to mount it directly on the head due to vibration. I need to go from the BSPT female on the head to a NPT female for the sending unit but I need a hose in between the two..does that make sense?

The part looks right but it says "Use with flareable SAE seamless carbon steel tubing" -- can I use it with braided steel hose as well? If so, what size?
 

Sukhoi

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Dec 5, 1999
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1/8" NPT is for a remotely mounted oil pressure gauge sending unit. I don't want to mount it directly on the head due to vibration. I need to go from the BSPT female on the head to a NPT female for the sending unit but I need a hose in between the two..does that make sense?

The part looks right but it says "Use with flareable SAE seamless carbon steel tubing" -- can I use it with braided steel hose as well? If so, what size?

That does make more sense.

Best I can tell AN and JIC (what that McMaster part is) are the same thing. http://en.wikipedia.org/wiki/JIC_fitting I've never heard it called AN before. We always used JIC at work, which is rather funny after reading that wiki because I worked at a defense contractor.

http://fittingsandadapters.com/saej537flarj.html The McMaster part is a -4 AN/JIC. It should work fine for your needs. We used parts looking exactly like the McMaster drawing all the time with hydraulic hoses.
 
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Howard

Lifer
Oct 14, 1999
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1/8" NPT is for a remotely mounted oil pressure gauge sending unit. I don't want to mount it directly on the head due to vibration. I need to go from the BSPT female on the head to a NPT female for the sending unit but I need a hose in between the two..does that make sense?

The part looks right but it says "Use with flareable SAE seamless carbon steel tubing" -- can I use it with braided steel hose as well? If so, what size?
If it says to use with flarable tubing, i would assume that the fitting is a flare-type, in which case you are required to use solid-wall tube.

As for your original question, which is regarding what you can use to connect a 1/8" BSPT to a 1/8" NPT, an industrial supply store that deals with hydraulics might be willing to do a one-off for you. I think you're confusing people with the mention of AN, too.
 
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Sukhoi

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If it says to use with flarable tubing, i would assume that the fitting is a flare-type, in which case you are required to use solid-wall tube.

As for your original question, which is regarding what you can use to connect a 1/8" BSPT to a 1/8" NPT, an industrial supply store that deals with hydraulics might be willing to do a one-off for you. I think you're confusing people with the mention of AN, too.

Why would hose with JIC flared fittings not work?
 

Howard

Lifer
Oct 14, 1999
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Why would hose with JIC flared fittings not work?
My guess is that the material is too soft and will become damaged over time. In any case, I have never seen anything but metal be used with flared fittings and what I've found so far by way of spec sheets seems to indicate that only metal is to be used.

EDIT: Which is not the case with compression fittings (Yor-Loks and the like). Hard plastics can be used with those.
 

jlee

Lifer
Sep 12, 2001
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If it says to use with flarable tubing, i would assume that the fitting is a flare-type, in which case you are required to use solid-wall tube.

As for your original question, which is regarding what you can use to connect a 1/8" BSPT to a 1/8" NPT, an industrial supply store that deals with hydraulics might be willing to do a one-off for you. I think you're confusing people with the mention of AN, too.

I've always seen braided hose referred to as AN -- link. I was unaware of another method of sizing..
 

jlee

Lifer
Sep 12, 2001
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That does make more sense.

Best I can tell AN and JIC (what that McMaster part is) are the same thing. http://en.wikipedia.org/wiki/JIC_fitting I've never heard it called AN before. We always used JIC at work, which is rather funny after reading that wiki because I worked at a defense contractor.

http://fittingsandadapters.com/saej537flarj.html The McMaster part is a -4 AN/JIC. It should work fine for your needs. We used parts looking exactly like the McMaster drawing all the time with hydraulic hoses.

This one also mentions 37 Flare Seal JIC and #4 AN, but it looks like it's hose end on one side (good) and female -4AN on the other (need male BPST).

I may have to find a local hydraulic shop and see what they can do.
 

Sukhoi

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Dec 5, 1999
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If it says to use with flarable tubing, i would assume that the fitting is a flare-type, in which case you are required to use solid-wall tube.

As for your original question, which is regarding what you can use to connect a 1/8" BSPT to a 1/8" NPT, an industrial supply store that deals with hydraulics might be willing to do a one-off for you. I think you're confusing people with the mention of AN, too.

The fitting is made of steel. I don't think it's going to be too soft. McMaster just happens to have it labeled for tubing since it will also work for that. If there was a problem using steel flared fittings with hydraulic hoses I don't think the lab I worked at would have used those types of connections for the last ~20 years.
 

jlee

Lifer
Sep 12, 2001
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I'll probably pick up one of those from McMaster - I just need to find the proper nut to go over the hose for that fitting. Thanks!
 

Sukhoi

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Dec 5, 1999
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I'll probably pick up one of those from McMaster - I just need to find the proper nut to go over the hose for that fitting. Thanks!

I'm not sure what sort of hose you have, but the ones I've used didn't need any sort of extra nut. The hose had a swivel fitting on the end that you just used a wrench to tighten onto the fitting.

We used fittings like McMaster 52515K41. Looks like McMaster will make the custom hose if you need it...9459K221.
 
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jlee

Lifer
Sep 12, 2001
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I'm not sure what sort of hose you have, but the ones I've used didn't need any sort of extra nut. The hose had a swivel fitting on the end that you just used a wrench to tighten onto the fitting.

We used fittings like McMaster 52515K41. Looks like McMaster will make the custom hose if you need it...9459K221.

This hose. There's no reason I couldn't use hose with a built-in fitting, though.

Maybe I should give them a call -- this:
SAE Hydraulic Hose SAE100R1-At, W/Female Fittings, 1/4" ID, 3250 PSI

then the appropriate fitting from hose to 1/8 NPT should do the trick?
 
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Sukhoi

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Dec 5, 1999
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This hose. There's no reason I couldn't use hose with a built-in fitting, though.

Maybe I should give them a call -- this:
SAE Hydraulic Hose SAE100R1-At, W/Female Fittings, 1/4" ID, 3250 PSI

then the appropriate fitting from hose to 1/8 NPT should do the trick?

Yeah best I can tell the 4545K162 fitting, 9459K221 hose, and 50695K171 fitting (NPTF is compatible) should do the job. At least that's what I would buy needing to go from a BSPT female to a NPT female with a strong hose in the middle.
 

Molly Wilder

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Molly Wilder... This thread is 7 years old please start a new one...

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