Thread tape, thread sealant, or ????

[TheOldHokie]

You're telling me stuff I already know. I know what fittings I have, I know the type of thread, I know they use an o-ring. I had to know all that in order to swap them out for the Summit Hydraulics Ag couplers and adapters. What I wasn't aware of is that the couplers that came on my $60k tractor four years ago are now obsolete.

Out of interest, $89 x 6 = $534 so compare that to what I paid for the Ag couplers and adapters. I paid $88.83 for all six 1/2" Ag couplers and $58.92 for the six 3/8 BSPP-1/2" NPTF adapters for a total of $147.75. That $386 difference can go towards the QH20 that I ordered yesterday.

Great. That would be your choice.

Hopefully you wont accidentally drop your mower and yank the ports out of that valve stack. Yes Virginia, that can and does happen.

 

[McMXi]

Great. That would be your choice.

Hopefully you wont accidentally drop your mower and yank the ports out of that valve stack. Yes Virginia, that can and does happen.

I pull a 4,000 lb RC3712 around with the tractor and it's not pulling any hoses out of couplers. I also pull an 8ft disc harrow around and that's not going anywhere either. I pay attention to how they're connected to the tractor in the same way I pay attention to how trailers are connected to my trucks. The cutter has a safety chain and I can easily add one to the disc harrow.

I don't have anything more to add re the swap. I jumped in this thread because I knew I'd be using PTFE paste rather than tape and figured it was relevant to the discussion.

 

[JohnDB]

Good grief!! You thought I was going to thread BSPP into NPT!!

It does happen . In this country due to imported equipment from different countries we get a mix of BSP and NPT, but most people assume the thread is BSP. In Canada a relative observed tradesmen regularly force-fitting NPT instrument connections into BSP threaded housings. I suppose it must have worked, for a while anyway.

This thread has been very instructional for me because I didn't realise that there were surge resistant high flow couplings. Thanks for sharing.

 

[TheOldHokie]

It does happen . In this country due to imported equipment from different countries we get a mix of BSP and NPT, but most people assume the thread is BSP. In Canada a relative observed tradesmen regularly force-fitting NPT instrument connections into BSP threaded housings. I suppose it must have worked, for a while anyway.

This thread has been very instructional for me because I didn't realise that there were surge resistant high flow couplings. Thanks for sharing.

There have been multiple cases here on OTT of people unknowingly mixing incompatible thread forms, fitting types, and quick couplers. Pipe fittings gooped up with thread sealant and jammed into SAE ORB ports is another common one. Then they wonder why they have leaks and complain about defective parts.

Its all too common and you see it on all of the tractor forums.

Dan

 

[Lil Foot]

The best thread sealant I've ever used (by orders of magnitude) is this stuff:

But they apparently went out of business, couldn't find it anywhere.

It has (apparently) resurfaced as this stuff:

I have some on order.

 

[GreensvilleJay]

so after 4 pages , is this now considered similar to an 'oil' thread ?