I found a flow meter

[Onthespotwelding]

Hi all,

I found this flow meter in a box of things. Good condition Victor branded unsure of age.

Sticker on inlet says 2 bar, however stamped into the brass body it states 5.5 bar?

Can this be used?

 

[cocker]

I would . Test it with a pea shooter first .

 

[hotponyshoes]

Yes, you need to connect it to a regulator though not directly to the bottle!
Once you have connected it up, open the tap on the flow meter all the way then adjust the main regulator until the ball reaches the top of the gauge. Then set your required gas flow via the flow meter.
Also check it well for leaks as the seals can perish and you'll waste a load of gas..

 

[Onthespotwelding]

not directly to the bottle!

I don’t think that’s possible is it?

 

[hotponyshoes]

I don’t think that’s possible is it?

I'm sure somebody somewhere has found a way...

 

[zzr1200]

I'm sure somebody somewhere has found a way...

Anything is possible if you try hard enough, or are stupid enough.............really depends on the person........

 

[Jack Ryan]

Once you have connected it up, open the tap on the flow meter all the way then adjust the main regulator until the ball reaches the top of the gauge. Then set your required gas flow via the flow meter.

Why do you need to do that? It seems to be calibrated at 2 Bar (29psi) so just set the regulator to that.

Jack

 

[hotponyshoes]

Why do you need to do that? It seems to be calibrated at 2 Bar (29psi) so just set the regulator to that.

Jack

Because I'd expect his main regulator gauge reads in lpm, not bar (or psi)

 

[Jack Ryan]

Because I'd expect his main regulator gauge reads in lpm, not bar (or psi)

OK, thanks. I would have used a pressure gauge.

I ask because I have not done that before and I wonder if it results in the correct calibration pressure for the flow meter. More likely it gives the maximum calibration pressure of the flow-gauge - that might be similar, but it might also be considerably higher.

Jack

 

[hotponyshoes]

OK, thanks. I would have used a pressure gauge.

I ask because I have not done that before and I wonder if it results in the correct calibration pressure for the flow meter. More likely it gives the maximum calibration pressure of the flow-gauge - that might be similar, but it might also be considerably higher.

Jack

I think I've ever only seen one tech sheet for them. Said it was calibrated with an inlet pressure 10% over the maximum gauge reading.
If you se them up correctly they will sort of act as the 2nd stage of a 2stage reg and prevent some of the surge (saving you gas)
If you were being fussy you could use the gauge to set the inlet pressure to 10% (or just the next gauge mark) over the gas flow you actually wanted to use.
But then you would have to adjust the main reg each time you wanted to change flow which would soon get tiresome.
If you are not changing flow very often then you may as well not use the flow gauge as it's just more things to go wrong/leak.

 

[Jack Ryan]

Said it was calibrated with an inlet pressure 10% over the maximum gauge reading.

Not really sure what that means - do you still have the tech-sheet? If you have a regulator-flow gauge followed by a flow meter, there is no inlet pressure reading - it is a flow reading.

I just stick to a pressure reducing regulator followed by a flow meter. The actual calibration is not critical, but it is simpler.

Thanks
Jack