Tennant S20 for sale. SweepScrub's used Tennant S20 sweeper is agile yet heavy duty. This is a highly efficient single pass sweeper with great dust control. Power options include battery, gas, LPG or diesel. The focus for this used Tennant S20 riding sweeper is on maximum sweeping power, improved air quality, safety and a return on your investment with Tennant's outstanding track record. SweepScrub also stocks Tennant and Nobles replacement parts, spare parts and aftermarket parts such as brushes, filters and squeegees for used Tennant S20 sweepers and other Tennant, Nobles, Advance, NSS and Pioneer Eclipse floor cleaning equipment.