If you're looking for Allweiler screw pump parts, here’s a detailed guide to help you identify, source, and replace components for your pump.
Before ordering parts, locate the nameplate on your pump to find:
Model Number (e.g., *Allweiler ZD 150-2, SN 300, AEB 50-1*)
Serial Number
Manufacturing Year
This ensures compatibility when ordering replacements.
Allweiler screw pumps (single, twin, and triple-screw designs) typically include these key components:
Main Rotor (Screw Shaft) – The primary rotating element.
Counter Rotor (Driven Screw) – Meshes with the main rotor in twin/triple-screw pumps.
Stator (for Progressive Cavity Pumps like SN Series) – Rubber/metal housing for the single screw.
Mechanical Seals – Prevents leaks (single, double, or cartridge seals).
Lip Seals / O-Rings – Used in less demanding applications.
Gaskets – For flange connections and casing joints.
Radial & Thrust Bearings – Supports rotor loads.
Bearing Housings – Encloses and protects bearings.
Pump Casing – Outer body (cast iron, stainless steel, etc.).
Liners / Sleeves – Wear-resistant internal components.
Pressure Relief Valve – Protects against overpressure.
Suction & Discharge Flanges – Connection points for piping.
Couplings – Connects pump to motor.
Gearbox (if applicable) – Speed reduction/increase.
Colfax Fluid Handling (Allweiler OEM)
→ Contact their support for genuine parts.
Authorized Distributors
Use Allweiler’s distributor locator to find local suppliers.
Industrial Parts Suppliers
WESCO
Motion Industries
KSB, Flowserve (for compatible parts)
Online Marketplaces
eBay (for used/rare parts)
Amazon Industrial (seals, gaskets)
Check the pump manual for part numbers and diagrams.
Search:
"Allweiler [Model] spare parts catalog PDF"
✔ Verify part numbers using the manual or OEM support.
✔ Compare materials (e.g., stainless steel vs. cast iron for corrosive fluids).
✔ Check lead times – Some specialized parts may require long delivery.
| Issue | Likely Parts Needed |
|---|---|
| Leak at shaft seal | Mechanical seal, O-rings, gaskets |
| Loss of pressure | Rotors, liners, wear plates |
| Excessive vibration | Bearings, couplings, alignment check |
| Overheating | Bearings, lubrication system parts |
If you provide your pump model & symptom, I can help identify the exact part needed!
Would you like assistance with:
Finding a specific part number?
Troubleshooting a pump issue?
Cross-referencing with alternative parts?
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