Diffusers, Chambers & Casings
Flow passage
Volute / flow passage for CNP pumps, used in 5 CNP series and listed in Engineering plastics.
- Ø D casing diameter
- DN discharge size
- B width
What it is
A spiral casing that collects the liquid from the impeller and leads it to the discharge.
How it works
The widening spiral slows the liquid and converts speed into pressure.
- Part group
- Diffusers, Chambers & Casings
- Used in
- 5 CNP series
- Materials
- Engineering plastics
- Supply
- Quoted per pump model
Signs it needs replacing
- Erosion in the tongue area
- Leakage at joints
- Lower efficiency
Selection & fitting tips
- Check the wear ring seat on overhaul
- Material to match the liquid
What to send us to order
Pump model code, material, quantity.
We identify the exact part for your pump and reply with price and delivery.
Request a quotationSeries that use the flow passage
| Series | Listed as | Material | Standard | Fits sizes | |
|---|---|---|---|---|---|
| NSA (pool, plastic) | Flow passage | Engineering plastics | — | All sizes | |
| NSC (pool, cast iron) | Flow passage | Engineering plastics | — | All sizes | |
| NSW (pool, stainless) | Flow passage | Engineering plastics | — | All sizes | |
| NSE (pool) | Flow passage | Engineering plastics | — | All sizes | |
| NSM (pool) | Flow passage | Engineering plastics | — | All sizes |
Related parts
Casing4 series
Casing cover1 series
Chamber1 series
Cylinder5 series
Diffuser14 series
Discharge chamber1 series
Discharge diffuser4 series
Exchange chamber1 series
How to order. Send us the pump model code (from the nameplate) and the quantity. We identify the exact part for your pump and reply with price and delivery. Use the part finder if you only know the model.