PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D-4521Pump Unit,rotary

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4320-01-288-3258 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-288-3258 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-288-3258. Primary manufacturer part number: D-4521.
Features
  • Pump Unit,rotary — FSC 4320
  • Media for Which Designed: SEWAGE
  • Operating Speed at Rated Capacity: 262.0 REVOLUTIONS PER MINUTE
  • Suction Lift: 7.000 FEET FT
  • Maximum Discharge Flow Rate: 25.0 GALLONS PER MINUTE
  • 2 verified cross-references
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-01-288-3258, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-288-3258
Primary Part NumberD-4521
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Media for Which DesignedSEWAGE
Operating Speed at Rated Capacity262.0 REVOLUTIONS PER MINUTE
Suction Lift7.000 FEET FT
Maximum Discharge Flow Rate25.0 GALLONS PER MINUTE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3455-00-224-032513200 INTERCHANGEABLE
Cutter,milling,angle
Niagara Cutter Inc
6220-00-320-7012133-1006 INTERCHANGEABLE
Panel,indicating,light Transmitt
Phaostron Instrument and Electronic Company
Cross-Reference Index
Part NumberManufacturer
D-4521 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
3X2X21-2 Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
3455-00-224-0325INTERCHANGEABLE
CUTTER,MILLING,ANGLE
13200
6220-00-320-7012INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
133-1006

Frequently Asked Questions

What is NSN 4320-01-288-3258?

NSN 4320-01-288-3258 is a Pump Unit,rotary, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-288-3258?

NSN 4320-01-288-3258 has 2 cross-referenced part numbers: D-4521 (Circor Naval Solutions Llc Dba Warren Pumps), 3X2X21-2 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-288-3258?

There are 2 known substitutes for 4320-01-288-3258: 3455-00-224-0325, 6220-00-320-7012. Verify interchangeability with system specifications before substitution.

What are the specifications of D-4521?

Key specifications for D-4521: Media for Which Designed: SEWAGE; Operating Speed at Rated Capacity: 262.0 REVOLUTIONS PER MINUTE; Suction Lift: 7.000 FEET FT; Maximum Discharge Flow Rate: 25.0 GALLONS PER MINUTE. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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