Overview
The CDL (cast iron) and CDLF (all-stainless) series stack 2 to 25 impellers on a vertical shaft for high discharge pressure from a compact ground footprint. Inlet and outlet share the same axis, so the pump sits inline on the pipework without a separate baseplate — ideal for plant rooms where space is tight.
Cartridge mechanical seals are standard; EPDM O-rings cover water duty, FKM for mild chemical service.
Typical Applications
- High-rise residential water supply
- Industrial cleaning (cascade high-pressure)
- Boiler feed
- Fire protection (jockey / standby)
- Long-distance irrigation boosting
- Reverse-osmosis feed
- Water-treatment plants
Operating Window
| Item | Rating |
|---|---|
| Flow | 1 – 160 m³/h |
| Head | 10 – 250 m |
| Liquid temp. | −15 °C to +120 °C |
| Max. system pressure | 25 bar (PN25) |
| IP / Class | IP 55 / F |
Range Matrix
| Nominal flow | Motor kW | Head range (2 – 25 stages) |
|---|---|---|
| CDL 1-xx | 0.37 – 1.5 | 10 – 180 m |
| CDL 4-xx | 0.55 – 3 | 10 – 200 m |
| CDL 16-xx | 1.5 – 11 | 20 – 220 m |
| CDL 32-xx | 4 – 22 | 25 – 230 m |
| CDL 64-xx | 11 – 37 | 30 – 220 m |
| CDL 120-xx | 22 – 45 | 30 – 200 m |
CDL vs CDLF
- CDL — cast-iron bowls, SS304 stage casings and impellers. Standard choice for clean cold water and most HVAC boosting.
- CDLF — all stainless (SS304 / SS316), for RO feed, food-grade water, and mildly corrosive service.
Related
- Yoking-designed alternative with similar curves → YVm
- Larger flow at lower head → YST end-suction
- Packaged fire system → YEDJ