Calpeda 35000190100 Impeller - C 22/A, 119.5 mm
The Calpeda 35000190100 is the genuine replacement impeller for the C 22/A centrifugal pump, with a 119.5 mm outside diameter. It is the rotating component that does all the work in the pump: the motor turns it, and its vanes throw liquid outward so that it leaves the rim at high velocity, which the casing then converts into the pressure and flow you see at the discharge.
The C series uses an open impeller rather than a closed one, and that choice shapes what the pump is good at. With no shroud enclosing the vanes there is a clear path through the impeller, so the pump will pass moderately dirty liquids and emulsions and handle solids up to around 4 mm without blocking - the reason these pumps turn up in industrial, agricultural and washdown duties rather than only on clean water. The trade-off is that performance depends on the running clearance between the open vanes and the casing wall. There is no shroud to contain the flow, so as that gap widens, liquid slips back across the vane tips instead of being carried round to the discharge.
That is exactly how an impeller wears out in service. Grit and suspended solids erode the vane tips and the front face, the clearance opens up, and output falls away gradually enough that nobody notices until a tank takes noticeably longer to fill or the pressure gauge no longer reaches where it used to. Cavitation leaves a different signature, pitting the vanes with a rough, eaten-away texture. Either way the fix is a new impeller, and the diameter is the number that matters when ordering - 119.5 mm here, because Calpeda supplies the same casting trimmed to different diameters for different duty points and frequencies.
Key Features
- Genuine Calpeda spare part for the C 22/A pump
- 119.5 mm outside diameter - the dimension that sets the duty point
- Open impeller design that passes moderately dirty liquids and emulsions
- Restores the running clearance that erosion opens up over time
- Returns flow and discharge pressure to the pump original performance
- Direct replacement, no modification or rebalancing required
Applications
- Calpeda C 22/A centrifugal pumps
- Restoring flow and pressure that have fallen off gradually
- Replacing an impeller with eroded vane tips or cavitation pitting
- Rebuilding a pump after a foreign object strike
- Moderately dirty liquids, emulsions and washdown duty
- Industrial, agricultural, marine and dockside installations
Specifications
- Brand: Calpeda
- Manufacturer: Calpeda Spa
- Manufacturer Part Number: 35000190100
- Part Type: Impeller, open
- Outside Diameter: 119.5 mm
- Fits: Calpeda C 22/A
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: Why does the diameter appear in the part description?
Because Calpeda supplies the same impeller pattern trimmed to several diameters to suit different duty points and supply frequencies. Two impellers can look identical and fit the same pump while giving noticeably different head and flow, so the diameter is part of the identity of the part.
Q: What else should I replace while the impeller is off?
The casing O-ring is the obvious one, since the wet end is already open. The impeller key and nut are worth inspecting at the same time, as both are cheap and both are awkward to reach again once the pump is closed up.
Q: Can a worn impeller be built up and machined back?
It is done on very large pumps where a replacement is a long lead time item, but on a pump this size it makes little sense. Balance and vane profile both matter, and restoring them properly costs more than the new part.
Q: The pump vibrates badly. Is the impeller the likely cause?
It can be, particularly if a vane has broken or eroded unevenly and thrown the balance out. Check it first, but rule out a partially blocked suction line and worn motor bearings too, as both produce similar symptoms.
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 impeller before you order.
CLRMarine
