PumpLookupPump and motor part numbers
Mains Units

NMT Stainless Steel Chemical plunger pump

NMT1520ESAL

Part number 1.905-041.0

  • 15Flow, l/min
  • 200Pressure, bar
  • 1450Speed, rpm
  • 5.7Power, kW

50 or 60 Hz The maker gives figures for both supplies.

Hawk NMT Stainless Steel Chemical pump

Specification

Flow
15 l/min (18 l/min at 60 Hz)
Pressure
200 bar
Speed
1450 rpm (1740 rpm at 60 Hz)
Absorbed power
5.7 kW (6.8 kW at 60 Hz)
Max water temperature
85 °C
Shaft side
Left
Shaft
Solid
Inlet
G 1/2
Outlet
G 3/8
Weight
11.5 kg
Oil
0.7 litres, SAE 10W40

Kits

Extraordinary maintenance6

Part numberDescriptionPer pumpSuppliers
1.904-806.0Plunger oil seal kit1 
1.905-017.0Complete seal packing, 20 mm1 
1.905-018.0Plunger, 20 mm3 
1.905-019.0Complete manifold1 
1.905-020.0Connecting rod and plunger rod assembly3 
1.905-542.0Crankcase seal kit1 

Ordinary maintenance2

Part numberDescriptionPer pumpSuppliers
1.905-016.0Plunger seals Ø20 mm1 
1.905-056.0Complete valve1 

Tools2

Part numberDescriptionPer pumpSuppliers
1.099-667.0Tool-kit1 
1.904-414.0Oil seal extractor tool-kit1 

Exploded view

Hawk exploded view of the NMT Stainless Steel Chemical pump, with position numbers
Hawk's drawing. The numbers match the positions in the parts list below. Open the picture to zoom in.

Parts list

Positions are the balloon numbers on Hawk's exploded view. A part with no number of its own comes in the kit shown beside it.

PosPart numberDescriptionQtyIn kit
1 9.851-881.0 Crankcase1
2 Kit only Plunger oil seal3 1.904-806.0
3 Kit only O-ring Ø1.78 x 31.47EPDM3 1.905-016.0, 1.905-017.0, 1.905-019.0
4 Kit only Pressure ring 20 mm3 1.905-016.0, 1.905-017.0, 1.905-019.0
5 Kit only Low pressure "U" seal Ø20 mm3 1.905-016.0, 1.905-017.0, 1.905-019.0
6 Kit only Intermediate ring 20 mm3 1.905-017.0, 1.905-019.0
7 Kit only High pressure "U" seal Ø20 mm3 1.905-016.0, 1.905-017.0, 1.905-019.0
8 Kit only Bonded seal G1/2 stainless steel1 1.905-019.0
9 Kit only Plug G1/2 stainless steel1 1.905-019.0
10 Kit only Manifold housing stainless steel1 1.905-019.0
11 Kit only Valve assembly6 1.905-019.0, 1.905-056.0
12 Kit only Screw M8 x 70 UNI5931 inox A2 708 1.905-019.0
13 Kit only Washer Ø8,5 stainless steel16 1.905-019.0
14 Kit only Bonded seal G3/8 stainless steel1 1.905-019.0
15 Kit only Plug G3/8 stainless steel1 1.905-019.0
16 Kit only O-ring 3075 Ø2,62 x 18,72 FKM6 1.905-019.0, 1.905-056.0
17 Kit only Valve seat6 1.905-019.0, 1.905-056.0
18 Kit only Valve plate6 1.905-019.0, 1.905-056.0
19 Kit only Valve spring6 1.905-019.0, 1.905-056.0
20 Kit only O-ring Ø3,53 x 23,39 FKM6 1.905-019.0, 1.905-056.0
21 Kit only Cap valve nmt esa6 1.905-019.0, 1.905-056.0
22 9.851-476.0 Screw M8 x 20 UNI5931 inox A2 708
23 9.850-639.0 Flangia chiusa rossa1
24 Kit only O-ring Ø1.78 x 60.052 1.905-542.0
25 9.850-349.0 Roller bearing 332052
26 9.850-177.0 Single - ended shaft1
27 9.850-446.0 Crankshaft key1
28 9.851-286.0 Oil dip stick1
29 Kit only Crankshaft seal1 1.905-542.0
30 9.850-547.0 Shim1
31 9.850-638.0 Flangia rossa1
32 Kit only Plunger nut stainless steel3 1.905-018.0, 1.905-020.0
33 Kit only Spacer Ø11.2/15 x 0.5 stainless steel3 1.905-018.0, 1.905-020.0
34 Kit only Plunger 20 mm3 1.905-018.0
35 Kit only Spacer Ø11.3/24 x 0.5 stainlees steel3 1.905-018.0
36 Kit only O-ring 2031 - Ø1,78 x 7,66 EPDM3 1.905-018.0, 1.905-020.0
37 Kit only Teflon ring3 1.905-018.0, 1.905-020.0
38 Kit only Plunger rod stainless steel3 1.905-020.0
39 Kit only Connecting rod3 1.905-020.0
40 Kit only Connecting rod pin3 1.905-020.0
41 Kit only Spring washer Ø66 1.905-020.0
42 Kit only Connecting rod screw M6 x 306 1.905-020.0
43 Kit only O-ring Ø2.62 x 126.671 1.905-542.0
44 9.853-776.0 Red crankcase cover1
45 Kit only O-ring Ø1.78 x 141 1.905-542.0
46 Kit only Brass plug G 3/81 1.905-542.0
47 Kit only Sight glass, G3/41 1.905-542.0
48 9.851-475.0 Cover screw M6 x 16 stainless steel4

Motor

A 4-pole motor of at least 5.7 kW drives this pump at 1450 rpm on 50 Hz. On a 60 Hz supply a motor with the same poles turns it at 1740 rpm, where it takes 6.8 kW. Order that motor wound for 60 Hz and rated for at least that power.

MotorkWrpmFrameClassA at 400 VSuppliers
RNE 132Ma4 7.51465IEC 132MIE315.3  
RN 132Ma4 7.51440IEC 132MIE115.3  
RN 112c4 uprated 6.31420IEC 112IE112.5  

The contactor and overload relay for each motor are on the motor's page.

Flange

The flange bolts the pump to the face of the motor. It depends on the motor's IEC frame.

Coupling

The flexible coupling joins the motor shaft to the pump shaft inside the flange.

Other Hawk NMT Stainless Steel Chemical pumps

NMT1220ESALNMT1220ESARNMT1520ESARNMT1820ESALNMT1820ESARNMT2120ESALNMT2120ESAR