Need 1 last fitting for pop tester

[thach]

Last fitting is the one going into the 1/4in NPT then to the injector line. What kind?

[greg lousy]

Lol... I'm making one too... just pieced this together
The injector unions are m12 x 1.5. Im 95 percent sure on this... I haven't used or pressurized yet, feels right going together though

[TylerDurden]

The bubble flare should probably seat on a smooth surface. I used a delivery valve fitting from a parts-pump... brazed it to a standard fitting.

You might also want a way to easily fill the pump (and have the gauge facing the operator).

[sgnimj96]

a special fitting from McMaster that will make a cut injector line work,
http://www.mcmaster.com/#5269k311/=ry60qt
you put the perfectly cut tube into the compression fitting and tighten it down, squeezes a collet permanently onto the tube. You'll need a 1/8" to 1/4" adapter if your T-fitting is 1/4"

With the delivery valve you can use a complete injector line

[thach]

That's perfect
It also looks like I could use a reducer on my 1/4 in NPT and that 12m X 1.5 thread would screw into a injector line and I would not need to get a line and cut it. Basically I don't need the compression ferels and nut.