Fristam side channel centrifugal pumps FZ Rversible, self-priming, high-precision pumps for complete evacuation of tanks and lines. Hygienic, universal, robust, easy to maintain, durable, economical. The optimum solution whenever high suction capacity is required. OUTSTANDING PERFORMANCE Fristam FZ pumps have the ability to continuously transport products con-taining large amounts of air or gas without becoming airlocked. This not only enables the FZ to minimise contamination between differ魭ent products but also to completely empty tanks and lines. Their excellent suction capabilities prevent product residues from remain-ing in the system for long. PERFECT DRAINING By removing remaining product, foam and solutions from the lines, the FZ pumps make the pumping process more efficient. SPECIFIC CONSTRUCTION Fristam's self-priming FZ pumps op-erate according to the side channel principle. Impellers with radial blades in conjunction with hydrodynamically optimised side channels transmit the pressure energy to the product. The stable impeller and narrow seal-ing gaps ensure an outstanding suc-tion capacity. The FZ's symmetric design allows for a reversal of the rotating direction. H [m. TECHNICAL DETAILS 6 diffթrent sizes System pressures up to 15 bar Օ Discharge pressures up to 6.5 bar Flow rates up to 64 m3/h Օ Viscosities up to 5,000 mPa s Q [m3/h. 50 FZ 25 "'\^ FZ 22""" \ \ \ FZ FZ 20 \ FZ 10 \ \ 45 40 35 30 25 20 15 10 0 Impeller from the Fristam FZ 0 10 20 30 40 50 60 Characteristic curves of the Fristam series FZ; n = 1,450 min 1