Pump, Rotary4320-01-549-1011

NSN 4320-01-549-1011 · NIIN 015491011 · Part number E-4735 BXL1-1/4NAF

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 07524

Government record, cited

NSN 4320-01-549-1011 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-549-1011. Manufacturer of record part number: E-4735 BXL1-1/4NAF.

Also searched as 4320-01-549-1011 · 4320015491011 · NIIN 015491011 · 01-549-1011 · FSC 4320 Power and Hand Pumps · CAGE 07524 · E-4735 BXL1-1/4NAF · BXL1-1/4NAF · E-4735

Nearby stock numbers ← 4320-01-549-0874 Rotor and Shaft Pump Assembly · 4320-01-549-1199 Ejector, Jet →

Features

Pump,rotary — FSC 4320
3 manufacturer part numbers on file
Manufacturer of record: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer

Identification

NSN: 4320-01-549-1011
NIIN: 015491011
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: E-4735 BXL1-1/4NAF
Manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer

General Description

The Pump,rotary, cataloged under National Stock Number 4320-01-549-1011, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-549-1011
Primary Part Number	E-4735 BXL1-1/4NAF
Item Name	Pump,rotary
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
E-4735 BXL1-1/4NAF PRIMARY	Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
BXL1-1/4NAF	Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-4735	Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-549-1011?

NSN 4320-01-549-1011 is a Pump,rotary, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-549-1011?

NSN 4320-01-549-1011 has 3 manufacturer part numbers on file: E-4735 BXL1-1/4NAF (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), BXL1-1/4NAF (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-4735 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What are the specifications of E-4735 BXL1-1/4NAF?

Key specifications for E-4735 BXL1-1/4NAF: End Item Identification: PUMP RTY 20GPM 20PSI. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-549-1011 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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