SPARC Nitrogen Flow Meter 0-75 SCFH Flow Indicator for Brazing, Welding, Purging HVAC 1/4" SAE Flare Inlet and Outlet 50PSI LIFETIME USA Warranty

Excellent price and good quality, I’ve used it for nitrogen purge when silver soldering. It serves well.

I didn't want to pay a lot, so figure I'd try the SPARC. It works as advertised. It is a little fragile compared to the US brands. I would put it back in its styrofoam packaging after use. For the price, its great. There is nothing too complicated about trickling nitrogen so I went with the cheap brand. My use is for hvac brazing. When I first started doing hvac, I learned early that if you use your normal regulator to trickle in nitrogen while brazing, you will run out of gas pretty quickly. Works in a pinch, but you sometimes end up using more $$$ in nitrogen gas than the cost of this.

fit upon arrival. easy to use. seems accurate on flows. i like the plastic flow indicator. i can be rough of stuff and this seems nearly unbreakable.

I'm an HVAC Tech and we braze copper all the time, always flowing Nitrogen. This is a great product, solid construction. The big supply house stores charge 3 times the price. We have been using this every day for a week or so and the Boss said order another one. Highly recommend this. (Its fun to use also). Get your flow rate just right!

SPARC seems to build a good quality product. Ive used it a few times and it feels like a quality product.Some cheaper products feel as if they're made from inferior materials, but not this one. when you close the valve it has a good firm seat, and when turning the knob, you can tell the seals are of good quality too.

Works great and accurate exactly what i needed .

Reasonably priced.Does the same job as higher priced flow meter

The female thread knurled nut that goes onto the N2 regulator outlet had a burr that initially kept it from tightening all the way onto the 1/4" flare fitting. I was able to clean up that thread somewhat with a hooked scribe and got it to seal with a little light pliers action. I don't plan to remove it from the regulator and it is sealing, so its OK. One star off for the burred-up thread.