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NGA Centrifugal pumps with open impeller

NGA Centrifugal pumps with open impeller
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NGA Centrifugal pumps with open impeller - 1

NGA Centrifugal pumps with open impeller PERFORMANCE RANGE INSTALLATION AND USE • • Suitable for use with liquids that are not chemically aggressive towards the materials from which the pump is made. The open impeller design allows liquids containing relatively high levels of impurities to be pumped without the risk of the impeller clogging. As a result of these characteristics the NGA series pumps are used specifically in industry and for transferring water from canals, rivers, reservoirs, tanks, etc. The pump should be installed in an enclosed environment, or at least sheltered from inclement weather. Flow rate up to 350 l/min (21 m³/h) Head up to 20 m APPLICATION LIMITS • • • • • • Manometric suction lift up to 7 m Liquid temperature between -10 °C and +90 °C (up to +40 for the version with the technopolymer impeller) Ambient temperature between -10 °C and +40 °C Max. working pressure 6 bar Passage of suspended solids up to Ø 10 mm Continuous service S1 OPTIONALS AVAILABLE ON REQUEST CONSTRUCTION AND SAFETY STANDARDS • • • EN 60034-1 IEC 60034-1 CEI 2-3 GUARANTEE Pump with technopolymer impeller Special mechanical seal Other voltages or 60 Hz frequency 2 years subject to terms and conditions CERTIFICATIONS 66

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NGA Centrifugal pumps with open impeller - 2

CHARACTERISTIC CURVES AND PERFORMANCE DATA 50 Hz n= 2900 1/min HS= 0 m NGA1A Head H (metres) NGA1B Flow rate Q MODEL Single-phase Three-phase POWER kW HP NGAm 1B NGA 1B 0.55 0.75 NGAm 1A NGA 1A 0.75 1 Q m³/h 0 3 6 9 12 15 18 19.5 21 l/min 0 50 100 150 200 250 300 325 350 18 17 16 14.5 13 10.5 8 6 20 19.5 18 16.5 15 12.5 10 8 H metres Q = Flow rate H = Total manometric head HS = Suction height 6 Tolerance of characteristic curves in compliance with EN ISO 9906 App. A. 67

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NGA Centrifugal pumps with open impeller - 3

NGA POS. COMPONENT CONSTRUCTION CHARACTERISTICS 1 PUMP BODY Cast iron, complete with threaded ports in compliance with ISO 228/1 2 BODY BACKPLATE Stainless steel AISI 304 3 IMPELLER Open impeller in stainless steel 316 4 MOTOR SHAFT Stainless steel EN 10088-3 - 1.4104 5 MECHANICAL SEAL Seal Shaft Model Diameter AR-14 Ø 14 mm Materials Stationary ring Rotational ring Elastomer Ceramic Graphite NBR 6 BEARINGS 6203 ZZ / 6203 ZZ 7 CAPACITOR Pump Capacitance Single-phase (230 V or 240 V) (110 V) NGAm 1B NGAm 1A 16 μF 450 VL 20 μF 450 VL 60 μF 300 VL 60 μF 300 VL 8 ELECTRIC MOTOR NGAm:...

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NGA Centrifugal pumps with open impeller - 4

DIMENSIONS AND WEIGHT f n a h1 DN1 h h2 DN2 w MODEL PORTS Single-phase Three-phase NGAm 1B NGA 1B NGAm 1A NGA 1A s n1 DIMENSIONS mm kg DN1 DN2 a f h h1 h2 n n1 w s 1½” 1½” 41 297 227 92 135 190 160 50 1~ 10 3~ 12.7 11.8 12.8 11.9 ABSORPTION MODEL VOLTAGE (single-phase) Single-phase 230 V 240 V NGAm 1B 5.6 A 5.3 A NGAm 1A 6.2 A 6.0 A MODEL 110 V VOLTAGE (three-phase) Three-phase 230 V 400 V 690 V 240 V 415 V 11.2 A NGA 1B 3.3 A 12.0 A NGA 1A 3.7 A 720 V 1.9 A 1.1 A 3.2 A 1.85 A 1.1 A 2.1 A 1.2 A 3.7 A 2.1 A 1.2 A PALLETIZATION MODEL Single-phase Three-phase GROUPAGE n° pumps H (mm) CONTAINER...

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