Finish Thompson DB6HPW DB6H Magnetic Drive Wet end
The DB6HPW is a Finish Thompson DB6H sealless magnetic drive wet end built in glass fiber reinforced polypropylene. It is supplied as the wet end alone, the fluid handling section that carries the housing, impeller and barrier. 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 glass fiber reinforced polypropylene with a carbon bushing and a ceramic shaft, and the elastomers are Viton FKM. Maximum working pressure for this size is 80 psi, with the housing material setting the temperature ceiling at 180 degrees F.
Key Features
- Sealless magnetic drive with no shaft seal and no leak path
- Glass fiber reinforced polypropylene 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: DB6HPW
- Series: DB6H
- Type: Sealless magnetic drive centrifugal wet end
- Wetted Material: Glass fiber reinforced polypropylene
- Bushing: Carbon
- Shaft: Ceramic
- Elastomers: Viton FKM
- Maximum Working Pressure: 80 psi
- Maximum Temperature: 180 degrees F
- Condition: New
Frequently Asked Questions
Q: What happens if the discharge valve is closed while it runs?
The magnets decouple rather than the motor stalling, which protects the drive but generates heat that can weaken the magnet set.
Q: Does the pump self prime?
The DB models are designed for flooded suction, so the supply should be at or above the pump rather than below it.
Q: How is the pump serviced?
It is a back pull out design, so the wet end comes apart without disturbing the piping or unbolting the motor.
Q: What decides the maximum temperature?
The housing material and the fluid together, with polypropylene rated to 180 degrees F and PVDF to 220 degrees F, lowered by whatever is being pumped.
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 wet end before you order.
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