CMO-N SERIES
The CMO-N series is a monoblock centrifugal pump developed with high performance at a reduced price in mind. These easy-to-service pumps are robust, compact in size, and highly reliable. Large wall thickness ensures high operational reliability and long service life.
Material Combinations
Suitable for pumping acids and bases. The parts in contact with the medium are made of thermoplastics (PP-PVDF) and the O-rings are available in (EPDM-FPM-FEP or FFKM). The series is available with a variety of shaft seal types such as lip seal, single or double mechanical seals in an internal or external design.
Open or Closed Impellers for Particle-Laden Media
Supplied as standard with semi-open impellers that can handle some impurities, but can also be provided with closed impellers for clean media if desired.
Technical construction and advantages
- Pump casing with extra thick walls in PP or PVDF
- Impeller in PP or PVDF. Semi-open design for particle-laden fluids and closed for clean media.
- Shaft sleeves in PP or PVDF protect the shafts. Rotates with the shaft, but independent of the impeller.
- Standardized mechanical shaft seals
- Motor adaptor in strong thermoplastic for sizes 25-125 to 65-160 and cast iron for sizes from 32-200 to 125-250.
- Balanced shafts in 42CrMo4 carbon steel (special alloys on request), oversized for efficient absorption of axial and radial forces.
- Loose flanges in glass fiber-reinforced PP, with an inner steel core for extra strength.
- Baseplate in SS316 acid-resistant stainless steel
Mechanical Shaft Seals
Elastomer Bellows Seals
Mechanical shaft seals for mildly aggressive, clean, and non-especially hot fluids. Static and rotating rings in SiC, springs and holders in SS316 not in contact with the medium, elastomers in EPDM or FPM. Available as external type (B6E-B6EC), internal type (B6I - B6IC - B6IH) or double mechanical type (B6EDF - B6EDFC).
PTFE bellows seals
Mechanical shaft seals for highly aggressive fluids and high temperatures. Static and rotating rings in three different material combinations (SiC-SiC, SiC-Al2O3, Al2O3-PTFE-C), PTFE bellows, springs, and holder in SS316 (not in contact with the fluid). Available as an external type (JRS – JRS1 – JRA) or double mechanical type (JR2S – JR2S1 – JT2P – JR2A).
Seal with O-ring in elastomer
Mechanical shaft seal for moderately aggressive, clean, and non-extremely hot media. Static and rotating rings in two different combinations (SiC-SiC, Carbon-graphite-SiC), spring and retainer in Hastelloy C276, O-ring in EPDM or FPM. Available as an internal type (UMG - UMS) or double mechanical type (UM2G - UM2S).
Find out more about Chemical Pumps and CMO-N from Lobe
Our technical sales staff looks forward to your inquiry!