Self-priming Centrifugal Liquid Ring Pump
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Standard design Self-priming pumps. The ability to maintain a vacuum under changing suction conditions makes A Series pumps ideally suited for scavenge duties and applications where the inlet pipework is only partially fi lled, or where the incoming liquid includes entrained air or gas. The construction materials and quick disassembly design make them particularly suitable for a wide variety of applications. They must be initially fi lled with liquid for the fi rst start-up; afterwards, a small liquid reservoir remains to enable rapid selfpriming to occur even if the suction pipe is emptied. A 21- A 31: Close-coupled pumps with the impeller directly supported by the electric motor shaft. Easy-opening front cover, by unscrewing three hand-nuts, allows quick inspection without disconnecting the inlet and outlet pipes. A 41 - A 51 - A 66 - A 81: Close-coupled design with separate IEC motor and fl exible coupling. Easy-opening front cover, for quick inspection without disturbing the inlet and outlet pipes. All CF-8M 1.4408 / AISI 316 Stainless steel parts. Investment cast, with electro-chemical polishing. Flow rates up to 50 m3/h, heads up to max. 35 m (3,5 bar) (50 Hz). Seals: Mechanical seals with seats to EN 12756. ISO 3069 standards. Single internal mechanical seal Single external mechanical seal Elastomers (certifi ed to FDA): EPDM Fluorocarbon (Viton) Silicone P.T.F.E. (FEP) Connections: DIN - SMS - IDF - BS / RJT - DS - CLAMP and EN 1092-1 PN16 fl anges to suit most international standards. Applications A Series pumps are suitable for a wide range of liquids (CIP solutions, juices, milk, whey, syrups, oil, wine, water, spirits, chemical and pharmaceutical media). Self-priming pumps A series A 21 - A31 pump A 41 - A 51 pump A 41 - A 51 pump with shroud

GENERAL DIAGRAM - 50 Hz GENERAL DIAGRAM - 60 Hz Q [l / min] H [m] H [ft] Performance applies to H Q [m3 / h] 2O at 20 °C, 1013 millibar Data not binding. Q [l / min] H [m] H [ft] Performance applies to H Q [m3 / h] 2O at 20 °C, 1013 millibar Data not binding. 1450 rpm 1750 rpm A 21 A 31 A 41 A 51 A 66 A 81 A 21 A 31 A 41 A 51 A 66 A 81

exec. A 66 (MOTORS SIZE IEC 132) Pumps 1450 rpm kW DN A B C D E F G K H h J I Y L M O P Q R S U V Z PAM (*) A 41 1,1 40 297 116 132 89 53,5 79 526 605 122 - 120 242 120 135 175 12 117 51 - - 20 22,5 6 90 1,5 40 297 116 132 89 53,5 79 526 605 122 - 120 242 120 135 175 12 117 51 - - 20 22,5 6 90 A 51 2,2 50 330 127 138 95 59,5 88 607 695 130 - 140 270 140 175 215 12 119 61 - - 20 22,5 6 100 4 50 330 127 138 95 59,5 88 607 695 130 - 140 270 140 175 215 12 119 61 - - 20 22,5 6 112 A 66 4 65 369 182 150 95 74 133 667 800 145 - 185 330 180 190 230 12 137 62 - - 25 28 8 112 5,5 65 369 182 150 95...