conecting gate valves

[sconly]

What is the best way of conecting copper pipe to a gate valve that is going to in the vapor path as the only way i can think off is the brass ones the the copper slipps into
thanks :handgestures-thumbupleft:

[MacStill]

If you know someone who can TIG weld you can get a SS adapter welded onto a ferrule, and use an easy flange on the copper.

P8012118.jpg

I could also have these types of fittings custom made by my supplier, but there's always that thing of "minimum qty" :?

[sconly]

thanks Mac
P.s did you get that message i sent you y :handgestures-thumbupleft: esterday

[MacStill]

sure did, just waiting on the 1" valve ;-)

[sconly]

ok thanks mate ^:)^

[bt1]

Might not set the world on fire but...

if have a good look at that fitting it's F'ing great and what it does for vapour path...

A seriously good solution that.

A impressed
bt1

[Brendan]

Don't know if this is of any help...but on my 3"VM, I used a 1.5" SS gate valve (big chunky unit from Mac (or Mrs Mac) :handgestures-thumbupleft: )...I cut some copper pipe and it slid nicely inside a brass threaded union as like a 'lining' to the brass collar.

I also pickled the brass first, but don't know if that is a load of crock or what :-

[karrotbear]

I actually posted the same question a month or so ago.

First I tried 'fitting' a smaller copper pipe into a threaded SS socket, that didn't turn out too good.

If you are not going to be disconnecting the gatevalve from the still individually, what you can do is take some 1" copper pipe, and force screw it into the gate valve threads. You will only get about 2mm or so into the socket, but that is enough (if you have cleaned it all well and roughed it up) and you have to be gentle whilst forcefull to feel if the threads are tapping your tube ;) and then solder it, here is a pic.

IMAG0516.jpg

IMAG0515.jpg

p.s just ignore my awesome soldering skillz