Which tap for Threading Adapter G4FG8M?

Fittings, nozzles, quick-disconnects, speed controllers, power supplies, & everything else...
Water Pistol Grunt
Water Pistol Grunt
Posts: 1
Joined: Tue Aug 13, 2013 3:21 am
Location: Northern Ireland

Which tap for Threading Adapter G4FG8M?

Postby Unicorn » Tue Aug 13, 2013 3:34 am

I have a pair of old VID-NX295 graphics card blocks in for service at the moment (I built the machine 4 years ago, this is its third loop service it's had in that time) and the coolant I switched to last time has left some hard crystals in the threads of the acrylic center block. As far as I know, the adapter used on this block is a G4FG8M, 3/8 male to 1/4 female adapter. The crystals won't dissolve with anything other than IPA which I can't use on this part of the block, so I want to run a tap down through these threads to clean them out. I tried my G3/8 (BSPP) x 19 tap and it seems extremely tight, so I didn't force it down through the acrylic thread. I drilled and tapped a 3/8 hole in a scrap of metal and tried screwing the adapter into it, but it seems quite loose, as though the tap size was wrong. 3/8x19 is the only 3/8 BSPP tap that I know of or own - can anyone help me out with this so I can get this block looking like new again and let the owner get another year out of it? Thanks in advance.

Rain Maker
Rain Maker
Posts: 1185
Joined: Tue Sep 16, 2008 10:34 am
Location: Edmonton, Canada

Re: Which tap for Threading Adapter G4FG8M?

Postby Izerous » Fri Sep 20, 2013 9:26 am

Kind of late to respond to this but I would honestly try some light vinegar in water on the crystals.
Corsair 800D
2xPMP-450S > Amd FX8370 > Asus CH4-EX > AMD 6990 > AMD 6990 > 2x1080 rads > return
32GB Ram

Return to “Fittings, Nozzles, Quick-Disconnects, Misc.”

Who is online

Users browsing this forum: No registered users and 1 guest