The Atlas Copco SFR oil-free scroll compressor has been engineered for use by railway operators to increase reliability and timeliness, while reducing expenses. The durable unit has few moving parts, and is best used in applications requiring low noise and moderate flow rates. The sturdy unit can be used in challenging environmental conditions, and is rated for 100% duty cycle. The SFR has an excellent track record for use in bus applications, as well as on EMUs, DMUs, metros, LRVs and trams