CGK series
The CGK series is designed for pumping aggressive media with capacities ranging from 200 – 4,000 m³/h. Its large capacity in a unique compact design makes it suitable for circulation tasks with high capacities and low pressures.
Unique features
- Pump casing and impeller with extraordinary high efficiency
- Partially open or closed impeller
- Up to 10% solids
- Grease or oil lubricated versions
- Impeller and shaft sleeve separated
- Impeller without threads
- Shaft adjustment system
- With bearing bracket or as a block pump
- Internal or external - Single or double mechanical shaft seal
- Pump casing liner in PP, PVDF, PE or UHMW
Accessories and additional equipment
- Drain connection
- Drip pan for service
- Thermosiphon system for double mechanical systems
Technical construction and benefits
- Front cover and back plate in S235JR-EN1025, guaranteeing strength and reliability even under heavy loads.
- Liners in extra strong PP, PVDF or PE-UHMW
- Hydraulically balanced impeller in PP, PVDF or PE-UHMW. Partially open model for particle-laden and closed impellers for clean media
- Shaft sleeves in PP, PVDF or PE-UHMW protect the shafts. Rotates with the shaft but is independent of the impeller
- Standardized mechanical shaft seals
- Extra strong front plate in S235JR-EN1025 carbon steel.
- Outlet flange in two halves, made of S235JR-EN1025 carbon steel.
- Single-row radial bearing.
- Balanced shaft in 42CrMo4 carbon steel (special alloys on request), oversized for efficient absorption of axial and radial forces and protected by a sleeve in PP, PVDF or PE-UHMW.
- Single-row radial bearing.
- Bearing housing in corrosion-resistant G25 cast iron.
Mechanical Shaft Seals
Elastomer bellows seals
Mechanical shaft seals for slightly aggressive, clean, and non-particularly hot media. Static and rotating rings in SiC, springs and retainers in SS316 not in contact with the media, elastomers in EPDM or FPM. Available as external type (B6E-B6EC), internal (B6I – B6IC – B6IH), or double mechanical type (B6EDF – B6EDFC).
PTFE bellows seals
Mechanical shaft seals for highly aggressive media 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 (non-media contact parts). Available as external type (JRS – JRS1 – JRA) or double mechanical type (JR2S – JR2S1 – JT2P – JR2A).
Sealing with O-ring in elastomer
Mechanical shaft seal for moderately aggressive, clean, and non-extremely hot fluids. Static and rotating rings in two different combinations (SiC-SiC, Carbon-graphite-SiC), spring and retainer in Hastelloy C276, O-ring in EPDM or FKM. Available as an internal type (UMG-UMS) or double mechanical type (UM2G-UM2S).
Find out more about Chemical Pumps and CGK from Lobe
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