CHUAN-FAN Ring Blower RB Type (Ring Blowers) Posted on by psi CHUAN-FAN Ring Blower RB Type (Ring Blowers) CHUAN-FAN Ring Blower RB Specifications Side Channel Blowers – Ring Blowers RB SERIES (50HZ) : Specifications Regenerative Blowers – Ring Blowers RB SERIES (60HZ) : By. PT. Putra Siduasaudara Indonesia