How to read Ebara D-Series model numbers (for seal sizing)
Example model: 150 DLFU 6304
1) Discharge size (first number group)
150 = discharge size.
Common sizes:
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50 mm (2″) | 80 mm (3″) | 100 mm (4″) | 150 mm (6″) | 200 mm (8″) | 250 mm (10″) | 300 mm (12″)
2) Model letters (middle group)
DLFU = the specific D-Series model.
In the U.S., D-Series models usually start with “D” and often end with “U” (U = U.S. version). You’ll frequently see L, M, and/or F within the code.
Examples seen in the field: DLFM, DLK, DLMFM, DVF, DBF, DLKWF, DL, DDLF (water jacket), DLFU, DLCMKFU, DLCMFU, and more.
3) Four-digit performance code (last group)
6304 helps select the correct mechanical seal and O-ring kit.
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Position 1: Frequency (e.g., 6 = 60 Hz)
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Positions 2–3: kW rating (drives seal/O-ring sizing; kW corresponds to HP on U.S. nameplates)
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Position 4: Voltage code
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2 = 208/230 V
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4 = 460 V (sometimes shown as 450 V in docs)
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*5 = 575 V
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kW = HP quick reference (positions 2–3)
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1.5 kW = 2 HP
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2.2 kW = 3 HP
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3.7 kW = 5 HP
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5.5 kW = 7.5 HP
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7.5 kW = 10 HP
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11 kW = 15 HP
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15 kW = 20 HP
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18 kW = 25 HP
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22 kW = 30 HP
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30 kW = 40 HP
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37 kW = 50 HP
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45 kW = 60 HP
Why this matters
The kW digits (positions 2–3) and the voltage code (position 4) are key to matching the correct mechanical seal set and O-ring kit for your exact pump build.
Quick tip:
Have the full string from your nameplate (e.g., 150DLFU6304) and, if possible, the serial number. Share those with us and we’ll confirm the exact seal and O-ring kit you need—fast. Call us today
