Hitachi

model NPO-0.752GX5/6 NPO-0.753GX5/6 NPO-0.754GX5/6 NPO-2.22GX5/6 NPO-2.23GX5/6 NPO-2.24GX5/6 NPO-3.72GX5/6 NPO-3.73GX5/6 NPO-3.74GX5/6 NPO-5.52GX5/6 NPO-5.53GX5/6 NPO-5.54GX5/6
Compressor Output kW 0.75 2.2 3.7 5.5
Nitrogen Gas Purity *1 % 99 99.9 99.99 99 99.9 99.99 99 99.9 99.99 99 99.9 99.99
Nitrogen Gas Capacity *2 1.7 1.3 0.9 5.5 3.9 2 9.7 7.2 4.2 14.2 10 5.4
Nitrogen Gas pressure MPa
[kgf/cm²]
0.55[5.6] 0.60[6.1] 0.65[6.6] 0.55[5.6] 0.60[6.1] 0.65[6.6] 0.55[5.6] 0.60[6.1] 0.65[6.6] 0.55[5.6] 0.60[6.1] 0.65[6.6]
Nitrogen Gas Outlet - PT1/4B(8A) female screw (8 dia.Hose Joint Attachment)
Surrounding Temperature °C 5~35
Surrounding Humidity *3 % 30~80
Outside Dimensions
(W×D×H) *4
mm 1,490×603×1,180 1,828×687×1,054 1,975×880×1,320 1,967×880×1,564
Product Mass kg 275 445 700 955
Noise dB[A] 56 59 60 65

You can order higher pressure model with lower capacity.

*1
Total capacity of nitrogen gas and the other gases.
*2
The capacity is at the temperature of 20 degree C and at the humidity of 60 % and with no clog on the suction filter.
The capacity varies due to the changes in temperature or humidity.
The capacity decreased by 10 % when the temperature is 35 degree C and the humidity is 80 %.
*3
Relative humidity.
*4
Including accessories such as drainage and hung bolts.
*5
These products are unavailable in some countries due to pressure vessel regulations.