Correct part identification is the most important step in any Flygt spare parts request. An incorrect part number — even one that differs by a single digit — can result in receiving a component that fits dimensionally but is manufactured for a different variant of the pump. Understanding how to read the Flygt pump nameplate and derive the correct part reference saves time, avoids errors, and accelerates the quotation process.
The Flygt Pump Nameplate
Every Flygt pump and mixer carries a stainless steel nameplate on the motor housing. This nameplate contains five key pieces of information for part identification:
- Product type designation — e.g. NP 3102, CP 3152, BS 2102. This identifies the pump family and nominal size
- Product number — a more detailed numeric code that specifies the variant within the family (impeller size, motor rating, seal configuration)
- Serial number — a unique identifier for the individual unit, encoding production date, factory, and build specification
- Motor data — rated power, voltage, current, speed, and insulation class
- Weight and submergence data — maximum submergence depth and pump weight
Reading the Product Number
The Flygt product number is structured to encode the key specification parameters of the pump. For submersible pumps in the 3000 series, the product number typically takes the format: XXXX.XXX where the first four digits identify the pump model and the suffix digits specify the variant. Key variant parameters encoded in the suffix include:
- Impeller diameter — determines the pump curve position and the correct hydraulic spare parts
- Motor winding variant — voltage and number of phases affect which stator and cable assembly is correct
- Seal configuration — single or double seal, and which seal system (Griploc or Plug-In)
- Material variant — standard cast iron, stainless steel, or high-chrome iron for abrasive applications
When the Nameplate Is Missing or Illegible
Nameplates on submersible pumps used in harsh environments may become corroded, abraded, or painted over. When the nameplate cannot be read, the following alternatives can enable part identification:
- Previous service records — if the pump has been serviced before, service documentation should include the product number
- Purchase order or delivery documentation — the original order documents will reference the product number
- Physical measurement of key dimensions — shaft diameter, impeller eye diameter, and motor frame dimensions can narrow the identification significantly
- Photographs of the pump — an experienced Flygt specialist can often identify the model and likely variant from photographs of the pump exterior, particularly the motor housing profile and discharge configuration
Confirming the Correct Spare Part
Once the product number is established, the correct spare part number can be determined from the Flygt parts list for that product. Key points to confirm:
- Seal part numbers differ by impeller variant — even within the same pump model
- Bearing part numbers are specific to the pump model — they carry Flygt-specific tolerances that standard commercial equivalent numbers do not guarantee
- Stator assemblies are motor-rating specific — the correct stator depends on the voltage and winding specification
Information to Include in Your Part Request
- Full product number from nameplate (photograph if possible)
- Serial number — used to confirm production variant when product number is ambiguous
- Part description (mechanical seal, stator, bearing, impeller) and quantity
- Application context if relevant — fluid type, duty cycle, operating environment
- Nameplate photograph — always welcome as a cross-reference
Key Points
- Always use the product number from the nameplate — not just the pump type designation
- The serial number encodes production information that confirms the correct variant when multiple options exist
- Photograph the nameplate before the pump goes back into service — legibility degrades over time
- When the nameplate is missing, dimensional measurements and photographs can enable identification by an experienced specialist
- SpareFlows will identify and confirm the correct part before quoting — send whatever information you have