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Calpeda - Above Ground Calpeda

NM 40/20 - Pumps

Close-coupled centrifugal pumps; electric motor withextended shaft directly connected to the pump. 
Pump casing with axial suction and radial delivery on top,main dimensions and performance according to EN 733.
NM: version with pump casing and motor bracket in cast iron.
B-NM: version with pump casing and motor bracket/cover inbronze. (the pumps are supplied fully painted).
 
Connections: Flanges according to PN 10, EN 1092-2.
Counter-flanges (on request)
 
APPLICATIONS

  • For clean liquids without abrasives, which arenon-aggressive for the pump materials (solids content up to 0,2%).
  • For water supply.
  • For heating, air conditioning, cooling and circulationplants.
  • For civil and industrial applications.
  • For fire fighting applications. 
  • For irrigation.
 
OPERATING CONDITIONS

  • Liquid temperature from 14 F to 194 F.
  • Ambient temperature up to 104 F
  • Total suction lift up to 21 ft
  • Maximum permissible working pressure up to 140 psi.
  • Continuous duty.
 
MOTOR
  • 2-pole induction motor, 60 Hz (n ˜ 3450 rpm).
  • NM: three-phase 230/460 V.
  • Insulation class F. Protection IP 55
  • Classification scheme IE2
  • Constructed in accordance with: EN 60034-1; EN 60034-30.

MATERIALS

  • Pump casing: Cast iron.
  • Motor Bracket: GJL 200 EN 1561.
  • Impeller: Brass CW510L (lead free public LAW 111-380).
  • Shaft: Cr steel AISI 430.
  • Mechanical seal: Carbon- Ceramic- NBR.

SPECIAL FEATURES ON REQUEST
  • Other voltages. 
  • Protection IP 55.
  • Bronze impeller. 
  • Special mechanical seal.
  • Packed gland (only for NM standard construction).
  • Single-phase motor (NMM) up to 1.5 kW.
  • Explosion proof construction in accordance with Directive94/9 EEC (ATEX).
  • Higher or lower liquid or ambient temperatures.

PUMP TECHNICAL DATA:

MODEL

HP 

VOLT

PHASE

MAX. AMP

SUCT.

DISCH.

WT. LBS

NM4020 50H36S

5

230/460

3

18/11

2.5”

1 1/2”

120

NM4020 75H36S

7.5

230/460

3

20/12

2.5”

1 1/2”

140

NM4020 100H36S

10

230/460

3

26/17

2.5”

1 1/2”

161



NM 40/20
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