700r4 hose adapters

[radio2000]

In the process of converting over to 6an braided stainless hose on my rebuilt 700. For the adapters, went with ICT Billet Transmission Adapter Fittings Kit -6 AN to 1/4 in. NPSM. Curious if anyone knows what these should be torqued to to avoid cracking the case. Any help would be appreciated.

Link to adapters
http://www.jegs.com/i/ICT-Billet/335/551114/10002/-1


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[chengny]

In the process of converting over to 6an braided stainless hose on my rebuilt 700. For the adapters, went with ICT Billet Transmission Adapter Fittings Kit -6 AN to 1/4 in. NPSM. Curious if anyone knows what these should be torqued to to avoid cracking the case. Any help would be appreciated.

Link to adapters
http://www.jegs.com/i/ICT-Billet/335/551114/10002/-1


Sent from my iPhone using Tapatalk

Because the O.D. of the threads on an NPS fitting are cut straight (i.e. not tapered like NPT) it would be hard to crack the case when making the joints up.

While an NPT joint is sealed by the reduction in clearance - between the male and female components that develops as they are threaded together - over tightening is a valid concern.

But with an NPS joint, since sealing is accomplished by an o-ring or gasket (that is inserted between the shoulder of the fitting and a machined surface), as the pieces are threaded together, there is no outward force exerted on the I.D. of the female component. The only force involved is the compression that results as the shoulder of the fitting moves closer to the case. I suppose, if you really reefed down on the adapter, you could possibly strip the female threads of the casing.

But you probably already knew all that. Here are the torque specs for the adapter/case:

You must be registered for see images attach

and the tubing/adapter:

You must be registered for see images attach

 

[bucket]

The factory fittings that went into the case also used a loc-tite/thread sealer of some type on the threads.

 

[radio2000]

Because the O.D. of the threads on an NPS fitting are cut straight (i.e. not tapered like NPT) it would be hard to crack the case when making the joints up.

While an NPT joint is sealed by the reduction in clearance - between the male and female components that develops as they are threaded together - over tightening is a valid concern.

But with an NPS joint, since sealing is accomplished by an o-ring or gasket (that is inserted between the shoulder of the fitting and a machined surface), as the pieces are threaded together, there is no outward force exerted on the I.D. of the female component. The only force involved is the compression that results as the shoulder of the fitting moves closer to the case. I suppose, if you really reefed down on the adapter, you could possibly strip the female threads of the casing.

But you probably already knew all that. Here are the torque specs for the adapter/case:

You must be registered for see images attach

and the tubing/adapter:

You must be registered for see images attach

I didn't know that. That's exactly what I was looking for. Thanks for the info


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