Converting NB to OD 1

[dav7nine]

Hi there... I have a small query... if I have a 1/2" OD A-LOK Needle valve with 1/2" OD tube either side and want to adapt this up to 3/4" NB pipe what is the best method? I have 3/4" X 1/2" NB reducing inserts elsewhere in the system but you can't get NB to OD reducing inserts.

Cheers

 

[rneill]

Swagelok, Parker and the other tube fitting manufacturers make adapters to go from NPT pipe to compression tubing connectors.

Unless I'm missing something, A-Lok is just the Parker tradename for their dual ferrule compression tube fittings and per their website, they do have a wide variety of dual ferrule compression fittings that transition from NPT pipe to Tubing but strangely enough, they didn't have a 1/2" Tube to 3/4" NPT pipe straight adapter listed?

anyway Parker did have a bulkhead adapter fitting listed (I'm also sure Swagelok would have this adapter as well) that would do what you want although you don't need the bulkhead functionality:

http://www.parker.com/portal/site/P...nextdiv=687516&vgnextpartno=8MBC12N-316&Wtky=

 

[rneill]

Hmmm, I see the weblink doesn't work but the part number for the fitting I was trying to point you to is "8MBC12N-316" so you could do a search for this part number on the Parker website.

The Swagelok fitting for this is their "Straight Male Connector" part number: SS-810-1-12

 

[dav7nine]

Hi rneill - thanks for the reply. I should have mentioned that the next thing up my line is a 3/4" NB Tee... so I would then have to adapt from the 3/4" NPT(M) to some sort of 3/4" socket weld (male) piece. I phoned a company and they said they would just make a male socket weld to 1/2" OD reducer... job done - hahaha.

Thanks for your help anyway... much appreciated.

I like the website, first time I've used it - I don't know how I posted this thread in this section though, my mistake.