How much thread tape for pipe fitting?

[ericfal]

Hello!

The recommendation should be 1 turn of pipe tape per diameter of pipe thread. I am going to install a 40R foot valve, which should then be 45 turns of tape. That's a crazy amount. After 30 turns, it already looks like too much.

I will lower the foot valve into a lake, so I only have one chance.

 

[13th Marine]

Not per centimeter maybe?

 

[ericfal]

May seem like it but it should be per millimeter

 

[AG A]

That seems reasonable... crank it 15 more turns and screw it on

 

[ericfal]

As a senior from AGA? you should know. But should it be that thick with tape before threading??

 

[Nyfniken]

The amount of thread tape should match the threads. That's just too much. Are you trolling?

 

[ericfal]

Here's what Rinkaby Rör says:

Count 1 turn per millimeter, i.e. R10 thread = 17 turns, R15 thread = 21 turns. Press the tape between the threads.

No magic

 

[Nils82]

The week's best

 

[bygghagberg]

The interesting thing is that it actually says so on the rikaby website 😀
But it's a bit too much.

 

[Demmpa]

http://www.nordicsprinkler.se/produkter/tillbehor/gangtejp/

 

[MathiasS]

You need to tighten the tape when wrapping. I usually stretch it quite firmly.

If you're going to thread a metal fitting onto that connection, I would use lin and paste instead, feels safer.

 

[Peter2400]

http://www.loctite.se/gaengtaetning-6914.htm

 

[ericfal]

Asked the same question to Rinkaby Rör!
Worked fine with this description:

As you mentioned, it's not reasonable to use so much thread tape. One of the guys in the store checked how many turns are reasonable, and he took about 25 turns, but it must be stretched a lot when you apply it. Use enough tape so that the connection becomes tight but does not move the thread tape.

 

[RoBo]

As MathiasS writes, it's probably just lin och pasta in your case. Gängtejp is crap.

 

[ericfal]

Why bother with thread tape? Looks good now. Do you have a good description of how to apply flax?