What is the difference between the 590 & 591 blowers

Hello, The 590 is only the blower while the 591 is the complete fishing system. Thank you, Professional Tools

Do you sell replacement parts for the 590 blowers, my fan blade was damaged

Hello, Yes, there are replacement parts. Please use part number 86186G for a new blower motor assembly. The rotating fan is not sold separately. Thank you, Professional Tools

Can this handle a 6" by 700' HDPE run? One coupling max.

Hello, No, it cannot. The max is going to be 300'. Thank you, Professional Tools

I own a 590 blower unit and need to replace the lower fan part of this component. Can I buy parts for the blower unit only?

Hlelo, Yes, you may purchase a new replacement, but there are several components to the fan. The rotating fan (91862094), the stationary fan (91862108) or the fan shell (91862116). Please advise. Thank you, Professional Tools

What is the CFM on this unit

Hello, This unit is 100cfm. If you have further questions please call us at 1 (800) 435-0786 or email us at grntechnicalsupport@emerson.com. Thank you, Greenlee Technical Support

Hello, For pricing, please email us at grncustomerservice@emerson.com or call us at 1 (800) 435-0786. Thank you, Greenlee Technical Support

Can I get a price on this please

Hello, the 590 blower can be purchased through a distributor in your area. If you are unsure of who that may be, please visit: https://www.greenlee.com/us/en/where-to-buy and you can type your zip code in to find several distributors you can work with in your area.