Finish Thompson KC11VTVN405C KC11 Magnetic Drive Close coupled pump
This is the Finish Thompson KC11 close coupled pump, supplied 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.
That construction is why these pumps end up on the duties nobody wants to nurse. A seal is the part that fails on a conventional chemical pump, and removing it removes the leak, the flush plan and the seal inventory along with it. The wetted parts are carbon fiber reinforced PVDF with a PTFE bushing and a ceramic shaft, and the elastomers are Viton FKM. The unit is built for a NEMA 56C motor frame. Maximum working pressure for this size is 45 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
- PTFE 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: KC11VTVN405C
- Series: KC11
- Type: Sealless magnetic drive centrifugal close coupled pump
- Wetted Material: Carbon fiber reinforced PVDF
- Bushing: PTFE
- Shaft: Ceramic
- Elastomers: Viton FKM
- Maximum Working Pressure: 45 psi
- Maximum Temperature: 220 degrees F
- Motor Frame: 56C
- Impeller Diameter: 4.00 inch
- Connections: NPT threaded
- Condition: New
Frequently Asked Questions
Q: Can the bushing material be changed later?
Yes, and it often is. Carbon suits most duties and tolerates brief dry running, while PTFE and ceramic are chosen where the chemistry attacks carbon.
Q: What happens during a magnet decoupling?
The two magnet sets slip out of step, the pump stops delivering and heat builds quickly, which is why a decoupled pump should be stopped rather than left running.
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.
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.
CLRMarine
