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.
1. Identifying Your Allweiler Screw Pump Model
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.
2. Common Allweiler Screw Pump Parts
Allweiler screw pumps (single, twin, and triple-screw designs) typically include these key components:
A. Rotors & Screws
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.
B. Seals & Gaskets
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.
C. Bearings & Bushings
Radial & Thrust Bearings – Supports rotor loads.
Bearing Housings – Encloses and protects bearings.
D. Casing & Liners
Pump Casing – Outer body (cast iron, stainless steel, etc.).
Liners / Sleeves – Wear-resistant internal components.
E. Valves & Connections
Pressure Relief Valve – Protects against overpressure.
Suction & Discharge Flanges – Connection points for piping.
F. Drive Components
Couplings – Connects pump to motor.
Gearbox (if applicable) – Speed reduction/increase.
3. Where to Buy Allweiler Screw Pump Parts
A. Official Sources
Colfax Fluid Handling (Allweiler OEM)
→ Contact their support for genuine parts.Authorized Distributors
Use Allweiler’s distributor locator to find local suppliers.
B. Aftermarket & Third-Party Suppliers
Industrial Parts Suppliers
WESCO
Motion Industries
KSB, Flowserve (for compatible parts)
Online Marketplaces
eBay (for used/rare parts)
Amazon Industrial (seals, gaskets)
C. Manuals & Exploded Views
Check the pump manual for part numbers and diagrams.
Search:
"Allweiler [Model] spare parts catalog PDF"
4. Tips for Ordering Parts
✔ 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.
5. Common Replacement Scenarios
| 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 |
6. Need Help?
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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