Portable compressor and extra tank plumbing - parallel or series
(Salt Lake City Utah)
Just purchased a name brand twin tank wheelbarrow compressor with 11.8CFM at 90PSI and 9 Gal tanks.
I want to run 3/4 inch Impact ratchet rated at 6.2 CFM average and under full load 22 CFM.
To help with the CFM under load I want to add an extra tank and will run all 1/2 inch hoses.
Question should I route the extra tank so its parallel to the installed tanks before the regulator or should I use the extra after the regulator in Series with the main tanks?
Mike, for those that are curious, here is my understanding of what you are asking:
Should you plumb the extra tank beside the existing one, with both tank discharge lines running through a single tee to one regulator which then supplies the compressed air to the air line to your air ratchet? To my mind, this is a parallel installation since both tanks can supply air to the circuit independently of the other.
Or, do you run the air from the compressor air tank directly into the secondary air tank, and then from the secondary air tank through the regulator to the air line to the ratchet, to me, that's a series air circuit.
Having said that, regardless of whether you plumb in parallel or series, depending on how long you need to run your ratchet under load, I fear that your air compressor may be too small, almost regardless of how big the secondary tank is.
You say that you " want to run 3/4 inch Impact ratchet rated at 6.2 CFM average and under full load 22 CFM" but you don't say at what pressure.
If the pressure demand is low, you might, and I stress might, get away with your plan. If the ratchet pressure is up around the 80-90 PSI range, I don't think your compressor will cut it in terms of adequate supply, almost regardless of how big your secondary tank is.