GX factory literature rates the GX4 and GX4-1 air output rating at 11 liters per minute at 1 bar. That equates to 22 liters per hour @ 4500 psi or 310 bar.
Most owners fill their SCBA tanks to 310 bar. That means a 6.8 liter tank X 310 bar holds 2108 liters of air @ 4500 psi. It takes 3 hours 12 minutes to fill a 6.8 liter tank from 0 to 4500 psi using the factory advertised fill rate.
A 9 liter tank holds 2790 liters of air at 310 bar or 4500 psi. That means using the factory rated output of 11 liters per minute it takes 4 hours and 13 minutes to fill a 9 liter tank from 0 to 4500 psi using a GX CS4.
A 500cc cylinder holds 125 liters at 250 bar. Filling a 500cc PCP air cylinder to 250 bar takes 11 minutes 22 seconds from empty.
Output air filters and other variables may affect these fill times slightly but this gives a general idea of the fill rates for this compressor.
Most owners fill their SCBA tanks to 310 bar. That means a 6.8 liter tank X 310 bar holds 2108 liters of air @ 4500 psi. It takes 3 hours 12 minutes to fill a 6.8 liter tank from 0 to 4500 psi using the factory advertised fill rate.
A 9 liter tank holds 2790 liters of air at 310 bar or 4500 psi. That means using the factory rated output of 11 liters per minute it takes 4 hours and 13 minutes to fill a 9 liter tank from 0 to 4500 psi using a GX CS4.
A 500cc cylinder holds 125 liters at 250 bar. Filling a 500cc PCP air cylinder to 250 bar takes 11 minutes 22 seconds from empty.
Output air filters and other variables may affect these fill times slightly but this gives a general idea of the fill rates for this compressor.
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