Mechanical Diaphragm Pumps
NDWS Series Mechanical Diaphragm Metering Pump
High-strength cast-aluminum mechanical diaphragm pump with precision worm gear, about 8-386 L/h; manual or 4-20mA electric stroke adjustment.
Max flow
8 - 386 L/h
Max pressure
3 - 16 bar
Turndown / accuracy
—
Wetted materials
PVC / PVDF / PTFE / SS316
Protection
—
Power
—
Features
- High-strength low-pressure cast aluminum housing
- Precision worm-gear drive, efficient and stable
- Manual or 4-20mA electric stroke adjustment
- Modified PTFE diaphragm for higher pressure
- Spring-return structure, easy maintenance
- Heads PVC/PVDF/PTFE/SS316; Ex/VFD motor options
Specifications
| Flow rate | 8 - 386 L/h |
| Pressure | 3 - 16 bar |
| Motor power | 180 W |
| Pump speed | 118 / 177 SPM |
| Liquid-end material | PVC / PVDF / PTFE / SS316 |
Applications
Materials & media
| Liquid end | PVC / PVDF / PTFE / SS316 |
| Diaphragm | PTFE |
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
| Manual stroke | Standard |
| 4-20mA / VFD | — |
Models & specs
| Model | Flow | Pressure | SPM | Power | |
| NDWS-8/1.6 | 8 L/h | 16 bar | 118 | 180 W | |
| NDWS-12/1.6 | 12 L/h | 16 bar | 177 | 180 W | |
| NDWS-18/1.5 | 18 L/h | 15 bar | 118 | 180 W | |
| NDWS-24/1.6 | 24 L/h | 16 bar | 177 | 180 W | |
| NDWS-33/1.0 | 33 L/h | 10 bar | 118 | 180 W | |
| NDWS-68/1.0 | 68 L/h | 10 bar | 118 | 180 W | |
| NDWS-120/0.7 | 120 L/h | 7 bar | 177 | 180 W | |
| NDWS-143/0.6 | 143 L/h | 6 bar | 118 | 180 W | |
| NDWS-213/0.5 | 213 L/h | 5 bar | 177 | 180 W | |
| NDWS-258/0.4 | 258 L/h | 4 bar | 118 | 180 W | |
| NDWS-386/0.3 | 386 L/h | 3 bar | 177 | 180 W |
Dimensions & installation
liquid end PVC/PVDF/PTFE/SS316; mounting dimensions by flow (8/1.6~24/1.6, 33/1.0~68/1.0, 120/0.7~386/0.3).
Downloads
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Need help selecting?
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