Lowara Lowara CO
Lowara CO series close-coupled centrifugal pumps, with open impeller in AISI 316L stainless steel, flow up to 54 m³/h and head up to 24 m.
CO is the Lowara series of close-coupled centrifugal pumps with an open impeller, with axial suction and radial discharge. All components in contact with the liquid are in AISI 316L stainless steel, and the impeller has four vanes pressed and welded onto the base disc. The brochure indicates flow up to 54 m³/h, head up to 24 m, pumped liquid between -10 and +110 °C in the standard version, a maximum working pressure of 8 bar (PN 8) and suspended solids of up to 11 mm for CO350 and 20 mm for CO500. The connections are threaded (Rp, ISO 7), and the motor is IP55, with class 155 (F) insulation.
The code is read from the nameplate: in COM 350/156K, M shows the single-phase motor, 350 the nominal flow in l/min, 15 the power of 1.5 kW (kW × 10), 6 the frequency of 60 Hz (no digit means 50 Hz), and K the seal with silicon carbide and tungsten carbide faces. The final letter shows the motor efficiency class: A (IE2, three-phase), D (IE3, three-phase) or C (IE2, single-phase). For a quotation please send us the full code and a photo of the nameplate; we check the variant in the Lowara brochure before sending the quotation.
Models and codes
| Code | Note |
|---|---|
| CO 350/03 | CO 350 series, 0.3 kW; the single-phase version COM 350/03 also exists. |
| CO 350/05 | CO 350 series, 0.5 kW; and COM 350/05. |
| CO 350/09 | CO 350 series, 0.9 kW; and COM 350/09. |
| CO 350/15 | CO 350 series, 1.5 kW; and COM 350/15. |
| CO 500/15 | CO 500 series, 1.5 kW; and COM 500/15. |
| CO 500/30 | CO 500 series, 3 kW, three-phase only in the brochure list. |
Key specifications
| Maximum flow | up to 54 m³/h |
|---|---|
| Maximum head | up to 24 m |
| Liquid temperature (standard version) | -10 … +110 °C |
| Maximum working pressure | 8 (PN 8) bar |
| Suspended solids | CO350: 11 mm; CO500: 20 mm |
| Maximum ambient temperature | 45 °C |
| Materials | AISI 316L stainless steel for all parts in contact with the liquid; standard carbon/ceramic seal with FPM elastomers; "K" version with SiC/tungsten carbide faces |
| Motor | IP55, insulation class 155 (F); single-phase 220–240 V; three-phase 220–240/380–415 V, 50 Hz |
The Lowara CO, SHO, COF technical brochure at 50 Hz (code 19100390U, revision D, edition 05/2023) is current, with no mention of withdrawal from the range.
Frequently asked questions
What does “CO350/15K/A” mean on the nameplate?
CO is the series, 350 the nominal flow in l/min, 15 the motor power in kW × 10 (1.5 kW), K the seal with silicon carbide and tungsten carbide faces, and A the IE2 class of the three-phase motor. CO350/05/A is the 0.5 kW variant, without the letter K.
Can the pump handle liquids with particles?
The impeller is open, and the brochure indicates suspended solids of up to 11 mm for CO350 and 20 mm for CO500. For your liquid you can send us the nature and size of the particles, and we check the variant in the brochure.
What is the difference between CO and COM?
M after CO shows the single-phase version (COM); no letter shows the three-phase version (CO).
Other Lowara series
Hydraulic performance per model, dimensions and weights are read from the brochure tables for the exact code; the SHO and COF series in the same brochure have separate pages in the Lowara documentation and are not covered here.
Updated: 2026-11-12