Blocker & Wallace Service LLC has been a leading Gardner Denver Factory Authorized Distributor, Repair, & Warranty Center for over 27 years. We have a over 100 years of combined experience in the pneumatic conveying industry specializing in new & remanufactured PD blower sales, system design, consulting, blower packaging & blower repair. We have been recognized by Gardner Denver as a top distributor and have received multiple distributor achievement awards on sales and service since 1983. We are one of the few distributors authorized to market and repair all PD blower lines owned or operated by Gardner Denver. Who We Are: - Gardner Denver Factory Authorized Distributor, Repair, & Warranty Center for over 35 years.