Finish Thompson KC5VCVN2701 KC5 Magnetic Drive Close coupled pump
The KC5VCVN2701 is a Finish Thompson KC5 sealless magnetic drive close coupled pump built in carbon fiber reinforced PVDF. It is supplied close coupled to its motor and ready to pipe in. There is no mechanical shaft seal anywhere in the design: the motor turns an outer magnet, and the field couples through a solid containment barrier to the magnet inside the impeller, so the only way out for the pumped fluid is the discharge port.
The absence of a seal is the whole point. It takes away the component that leaks, the flush water that goes with it and the seal spares that sit on the shelf waiting for the next failure. The wetted parts are carbon fiber reinforced PVDF with a carbon bushing and a ceramic shaft, and the elastomers are Viton FKM. Maximum working pressure for this size is 60 psi, with the housing material setting the temperature ceiling at 220 degrees F.
Key Features
- Sealless magnetic drive with no shaft seal and no leak path
- Carbon fiber reinforced PVDF wetted construction
- Carbon bushing on a ceramic shaft
- Neodymium magnets for full torque in a compact coupling
- Back pull out design so the wet end is serviced without disturbing the piping
Applications
- Acid, caustic and solvent transfer where a leak cannot be tolerated
- Plating, etching, anodizing and metal finishing lines
- Water treatment, scrubber and filtration recirculation
- Laboratory, photo processing and chemical blending systems
- Replacing a sealed pump that keeps failing at the shaft seal
Specifications
- Brand: Finish Thompson
- Model: KC5VCVN2701
- Series: KC5
- Type: Sealless magnetic drive centrifugal close coupled pump
- Wetted Material: Carbon fiber reinforced PVDF
- Bushing: Carbon
- Shaft: Ceramic
- Elastomers: Viton FKM
- Maximum Working Pressure: 60 psi
- Maximum Temperature: 220 degrees F
- Impeller Diameter: 2.70 inch
- Connections: NPT threaded
- Condition: New
Frequently Asked Questions
Q: Does the elastomer choice limit the pump?
It often limits it more than the housing does, since a Viton ring fails on caustics and hot water where an EPDM ring would last.
Q: Is a suction strainer worth fitting?
On a magnetic drive pump, yes. The running clearances are small and a single piece of debris can take out the bushing.
Q: How is the pump taken apart for service?
The wet end separates from the motor adapter without disturbing the piping, so bushings and O-rings can be renewed in place.
Q: What causes most premature wet end wear?
Dry running, abrasive solids, and operating well to the left of the curve where recirculation heats the fluid inside the pump.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct pump before you order.
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