NMT Stainless Steel Chemical plunger pump
NMT1820ESAL
Part number 1.905-205.0
- 18Flow, l/min
- 200Pressure, bar
- 1450Speed, rpm
- 6.8Power, kW
50 or 60 Hz The maker gives figures for both supplies.
Specification
- Flow
- 18 l/min (21.4 l/min at 60 Hz)
- Pressure
- 200 bar
- Speed
- 1450 rpm (1740 rpm at 60 Hz)
- Absorbed power
- 6.8 kW (8.1 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 number | Description | Per pump | Suppliers |
|---|---|---|---|
| 1.904-806.0 | Plunger oil seal kit | 1 | |
| 1.905-017.0 | Complete seal packing, 20 mm | 1 | |
| 1.905-018.0 | Plunger, 20 mm | 3 | |
| 1.905-019.0 | Complete manifold | 1 | |
| 1.905-020.0 | Connecting rod and plunger rod assembly | 3 | |
| 1.905-542.0 | Crankcase seal kit | 1 |
Ordinary maintenance2
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 1.905-016.0 | Plunger seals Ø20 mm | 1 | |
| 1.905-056.0 | Complete valve | 1 |
Tools2
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 1.099-667.0 | Tool-kit | 1 | |
| 1.904-414.0 | Oil seal extractor tool-kit | 1 |
Exploded view
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.
| Pos | Part number | Description | Qty | In kit |
|---|---|---|---|---|
| 1 | 9.851-881.0 | Crankcase | 1 | |
| 2 | Kit only | Plunger oil seal | 3 | 1.904-806.0 |
| 3 | Kit only | O-ring Ø1.78 x 31.47EPDM | 3 | 1.905-016.0, 1.905-017.0, 1.905-019.0 |
| 4 | Kit only | Pressure ring 20 mm | 3 | 1.905-016.0, 1.905-017.0, 1.905-019.0 |
| 5 | Kit only | Low pressure "U" seal Ø20 mm | 3 | 1.905-016.0, 1.905-017.0, 1.905-019.0 |
| 6 | Kit only | Intermediate ring 20 mm | 3 | 1.905-017.0, 1.905-019.0 |
| 7 | Kit only | High pressure "U" seal Ø20 mm | 3 | 1.905-016.0, 1.905-017.0, 1.905-019.0 |
| 8 | Kit only | Bonded seal G1/2 stainless steel | 1 | 1.905-019.0 |
| 9 | Kit only | Plug G1/2 stainless steel | 1 | 1.905-019.0 |
| 10 | Kit only | Manifold housing stainless steel | 1 | 1.905-019.0 |
| 11 | Kit only | Valve assembly | 6 | 1.905-019.0, 1.905-056.0 |
| 12 | Kit only | Screw M8 x 70 UNI5931 inox A2 70 | 8 | 1.905-019.0 |
| 13 | Kit only | Washer Ø8,5 stainless steel | 16 | 1.905-019.0 |
| 14 | Kit only | Bonded seal G3/8 stainless steel | 1 | 1.905-019.0 |
| 15 | Kit only | Plug G3/8 stainless steel | 1 | 1.905-019.0 |
| 16 | Kit only | O-ring 3075 Ø2,62 x 18,72 FKM | 6 | 1.905-019.0, 1.905-056.0 |
| 17 | Kit only | Valve seat | 6 | 1.905-019.0, 1.905-056.0 |
| 18 | Kit only | Valve plate | 6 | 1.905-019.0, 1.905-056.0 |
| 19 | Kit only | Valve spring | 6 | 1.905-019.0, 1.905-056.0 |
| 20 | Kit only | O-ring Ø3,53 x 23,39 FKM | 6 | 1.905-019.0, 1.905-056.0 |
| 21 | Kit only | Cap valve nmt esa | 6 | 1.905-019.0, 1.905-056.0 |
| 22 | 9.851-476.0 | Screw M8 x 20 UNI5931 inox A2 70 | 8 | |
| 23 | 9.850-639.0 | Flangia chiusa rossa | 1 | |
| 24 | Kit only | O-ring Ø1.78 x 60.05 | 2 | 1.905-542.0 |
| 25 | 9.850-349.0 | Roller bearing 33205 | 2 | |
| 26 | 9.850-178.0 | Single - ended shaft | 1 | |
| 27 | 9.850-446.0 | Crankshaft key | 1 | |
| 28 | 9.851-286.0 | Oil dip stick | 1 | |
| 29 | Kit only | Crankshaft seal | 1 | 1.905-542.0 |
| 30 | 9.850-547.0 | Shim | 1 | |
| 31 | 9.850-638.0 | Flangia rossa | 1 | |
| 32 | Kit only | Plunger nut stainless steel | 3 | 1.905-018.0, 1.905-020.0 |
| 33 | Kit only | Spacer Ø11.2/15 x 0.5 stainless steel | 3 | 1.905-018.0, 1.905-020.0 |
| 34 | Kit only | Plunger 20 mm | 3 | 1.905-018.0 |
| 35 | Kit only | Spacer Ø11.3/24 x 0.5 stainlees steel | 3 | 1.905-018.0 |
| 36 | Kit only | O-ring 2031 - Ø1,78 x 7,66 EPDM | 3 | 1.905-018.0, 1.905-020.0 |
| 37 | Kit only | Teflon ring | 3 | 1.905-018.0, 1.905-020.0 |
| 38 | Kit only | Plunger rod stainless steel | 3 | 1.905-020.0 |
| 39 | Kit only | Connecting rod | 3 | 1.905-020.0 |
| 40 | Kit only | Connecting rod pin | 3 | 1.905-020.0 |
| 41 | Kit only | Spring washer Ø6 | 6 | 1.905-020.0 |
| 42 | Kit only | Connecting rod screw M6 x 30 | 6 | 1.905-020.0 |
| 43 | Kit only | O-ring Ø2.62 x 126.67 | 1 | 1.905-542.0 |
| 44 | 9.853-776.0 | Red crankcase cover | 1 | |
| 45 | Kit only | O-ring Ø1.78 x 14 | 1 | 1.905-542.0 |
| 46 | Kit only | Brass plug G 3/8 | 1 | 1.905-542.0 |
| 47 | Kit only | Sight glass, G3/4 | 1 | 1.905-542.0 |
| 48 | 9.851-475.0 | Cover screw M6 x 16 stainless steel | 4 |
Motor
A 4-pole motor of at least 6.8 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 8.1 kW. Order that motor wound for 60 Hz and rated for at least that power.
| Motor | kW | rpm | Frame | Class | A at 400 V | Suppliers |
|---|---|---|---|---|---|---|
| RNE 132Ma4 | 7.5 | 1465 | IEC 132M | IE3 | 15.3 | |
| RN 132Ma4 | 7.5 | 1440 | IEC 132M | IE1 | 15.3 |
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.
- IEC 132, 38 mm shaft (RNE 132Ma4, RN 132Ma4) 1.099-531.0 Motor flange, IEC 132 B14
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 132, 38 mm motor shaft 1.099-545.0 Flexible coupling, IEC 132, 38 mm motor to 24 mm pump
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