Berkeley pump model numbers look like a random string of letters and digits, but they actually follow a logical pattern. Once you can read a code like B3ZPMS or B2TPMS, finding the right pump or an exact replacement becomes far easier. This guide explains how Berkeley nomenclature is structured and how to confirm a model before you buy.
We will focus on the popular B-Series centrifugal pumps, then point you to the wider Berkeley pump lineup so you can match your needs.
How Berkeley Model Numbers Are Built
Berkeley codes generally read from left to right, describing the pump's size and configuration in order. While exact characters vary by family, the building blocks are usually:
- Leading number: the discharge port size in inches (for example, a 2 or 3 at the front)
- Series letters: the pump family or casing type (such as the B-Series designation)
- Middle letters: impeller type, trim, or material configuration
- Suffix letters: seal type, drive, mounting, or motor configuration
Because the same root can appear in close-coupled, frame-mount, and motor-driven versions, the suffix is what tells you exactly how the pump is built.
Reading a B-Series Code
Take a code like B2TPMS. Working left to right, the leading digit points to the discharge size, the B identifies the series, and the trailing letters describe the impeller, seal, and motor configuration. The safest way to confirm any specific code is to compare it against Berkeley's official model nomenclature data sheet or the pump's performance curve, since a single letter can change the seal material or motor type. When in doubt, send us the code and we will verify it.
Common Berkeley Series
Beyond individual codes, it helps to know the main families:
- B-Series centrifugal: versatile close-coupled and frame-mount pumps for transfer, booster, and irrigation duty
- Type B and Type C: straight centrifugal pumps for higher-flow and industrial jobs
- LT and LTH self-priming: high-head sprinkler and irrigation pumps
- MS submersible: stainless steel 4-inch submersible well pumps
Explore these across the Berkeley collection, pressure and irrigation pumps, and centrifugal pumps.
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Have a Berkeley model number you need to identify or replace? Send it to our team through the Berkeley collection page or call (844) 378-6771 and we will confirm the exact match. |
How to Find the Right Replacement
If you are replacing an older Berkeley pump, start with the nameplate. Record the full model number, the horsepower, voltage and phase, and the GPM and head if listed. Then match those to a current model, since model codes occasionally change between generations. If the original is discontinued, the GPM and head figures let you find an equivalent pump that performs the same way.
Final Thoughts
Berkeley model numbers are easier to read once you know they describe discharge size, series, configuration, and motor in order. For an exact decode, always confirm against the official nomenclature sheet or the performance curve.
Not sure what you have? Contact ePumps with the code from your nameplate and we will identify the right pump or replacement.
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Not sure what you have? Contact ePumps with the code from your nameplate and we will identify the right pump or replacement. . |
FAQ's
What does the B mean in Berkeley pump model numbers?
The B identifies the pump series or family within Berkeley's lineup, most commonly the B-Series centrifugal pumps. It is usually paired with a leading number for the discharge size and trailing letters that describe the impeller, seal, and motor configuration.
How do I find my Berkeley pump model number?
Check the nameplate on the pump or motor. It lists the full model number along with horsepower, voltage, phase, and often the GPM and head. Record all of it. If the nameplate is worn, the original paperwork or the pump's performance curve can help identify it.
Are Berkeley and Pentair the same brand?
Berkeley is a pump brand owned by Pentair. Berkeley-branded pumps are designed and supported under the Pentair umbrella, which means strong parts availability and warranty backing. You will sometimes see them referenced as Pentair Berkeley.
How do I match a replacement for a discontinued Berkeley pump?
Use the old pump's GPM, head, horsepower, voltage, and discharge size rather than relying only on the model code, which can change between generations. Match those performance numbers to a current model. ePumps can help you cross-reference a discontinued code to an equivalent pump.
