TNLL Vertical In-Line Pumps
Vertical shaft, single-stage in-line centrifugal pumps for clean liquids — install directly in the pipeline to save floor space.
Desan Engineering TNLL series pumps are suitable for liquids that do not contain corrosive substances or large solid particles.
They are single-stage, vertical shaft, volute casing, in-line connectable, closed impeller centrifugal pumps — installed directly in the pipeline to reduce floor space.
Highlights
- Shaft connection or rigid coupling between motor and pump shaft
- Suction and discharge flanges: TS EN 1092-2 / PN 16
- Mechanical seal in series production
- Easy disassembly: seal box, shaft and impeller can be removed without removing the volute from the system
- Casing / impeller materials may be bronze or stainless steel depending on duty
| Parameter | Value |
|---|---|
| Configuration | Vertical shaft, single-stage, in-line |
| Discharge flange | DN 32 – DN 150 |
| Flow rate (Q) | Up to 850 m³/h |
| Head (H) | Up to 100 m |
| Motor speed | Up to 3,600 rpm |
| Operating temperature | -10 °C to +140 °C |
| Casing pressure (Pmax) | 10 – 16 bar |
| Flange standard | TS EN 1092-2 / PN 16 |
| Seal | Mechanical seal (std); options by duty |
| Impeller | Closed impeller |
Pump label example
TNLL 65-250 → discharge flange DN 65, impeller nominal diameter 250 mm. Different mechanical seal brands/types available on request.
Dimensional drawing — in-line outline and motor mounting.
Cross-section drawing — vertical in-line construction.
Full curves, BOM lists and dimension tables are in the technical catalog (PDF).
Operating ranges
Performance published for 1,450 rpm and 2,900 rpm bands across in-line DN / impeller sizes.
Envelope: flow up to 850 m³/h, head up to 100 m.
Send required flow, head and installation constraints for model selection.
Send your project requirements. Our team will reply with the suitable pump selection.
