The NitroPro NTF-230 Nitrogen Tire Inflation System offers RTI Technologies' simple NitroPro membrane technology, requiring no moving parts to generate nitrogen. With a compact footprint of 24" by 24" and lower overall unit height, the NTF-230 provides better portability and usable space in the shop. The NTF-230 stores 30 gal. of nitrogen, with a service time of 5 minutes per vehicle. An air supply of 100-150 psi is required for operation.