Pro/Forums - View Single Post

nexxo · 05-24-2003, 09:37 AM

Syncore: you can simply tap the plastic pipes. I can't speak for the Smaller Johnson/Jabsco mentioned here (the CM10P I believe?), which has pipes of 16mm OD and I suspect 12mm ID, but the Johnson CM30P7-1 has pipes of 20mm OD, 16mm ID. 16mm ID corresponds exactly to 3/8" NPT or BSP thread (12mm ID would correspond to 1/4" NPT or BSP thread).

So here's what I did:

I found a 3/8" thread to 12mm barb (sorry, forgot to rotate the pics!):

Test fit:

Tapped the pipe. I have a pic of this, but not uploaded yet --d'oh! Still, you can imagine how it works; a 3/8" BSP tap and die set was used. The result is sort of visible below:

Just make sure you use teflon tape when screwing in the barb. Don't over-tighten, or you'll break the pipe.

05-24-2003, 09:37 AM	#59
nexxo Cooling Savant Join Date: Jul 2002 Location: Brimingham, UK Posts: 385	Syncore: you can simply tap the plastic pipes. I can't speak for the Smaller Johnson/Jabsco mentioned here (the CM10P I believe?), which has pipes of 16mm OD and I suspect 12mm ID, but the Johnson CM30P7-1 has pipes of 20mm OD, 16mm ID. 16mm ID corresponds exactly to 3/8" NPT or BSP thread (12mm ID would correspond to 1/4" NPT or BSP thread). So here's what I did: I found a 3/8" thread to 12mm barb (sorry, forgot to rotate the pics!): Test fit: Tapped the pipe. I have a pic of this, but not uploaded yet --d'oh! Still, you can imagine how it works; a 3/8" BSP tap and die set was used. The result is sort of visible below: Just make sure you use teflon tape when screwing in the barb. Don't over-tighten, or you'll break the pipe. __________________ "There is a thin line between magic and madness"