PartsTable TECHNICAL DATA SHEET

NSN 4320-01-231-6704Government record, cited

Housing, Liquid Pump4320-01-231-6704

NSN 4320-01-231-6704 · NIIN 012316704 · Part number UU-45

Circor Naval Solutions Llc Dba Warren Pumps · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 63857

Government record, cited

NSN 4320-01-231-6704 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-231-6704. Manufacturer of record part number: UU-45.

Also searched as 4320-01-231-6704 · 4320012316704 · NIIN 012316704 · 01-231-6704 · FSC 4320 Power and Hand Pumps · CAGE 63857 · UU-45 · A1591 PIECE 1 · UU45YR · A-1591

Nearby stock numbers ← 4320-01-231-6699 Screen, Edge Guard · 4320-01-231-6705 Housing, Liquid Pump →

Features

Housing,liquid Pump — FSC 4320
Material: COPPER ALLOY
1 manufacturer part number on file
Manufacturer of record: Circor Naval Solutions Llc Dba Warren Pumps

Identification

NSN: 4320-01-231-6704
NIIN: 012316704
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: UU-45
Manufacturer: Circor Naval Solutions Llc Dba Warren Pumps

General Description

The Housing,liquid Pump, cataloged under National Stock Number 4320-01-231-6704, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-231-6704
Primary Part Number	UU-45
Item Name	Housing,liquid Pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Circor Naval Solutions Llc Dba Warren Pumps
Status	ACTIVE
Material	COPPER ALLOY

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

⇄ Related Items 5

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4320-01-231-6705XY-24 POSSIBLE MATCH

HOUSING,LIQUID PUMP

Possible match (shared part number)Circor Naval Solutions Llc Dba Warren Pumps

4320-01-231-6726WL-38 POSSIBLE MATCH

CONNECTING ROD,PISTON

Possible match (shared part number)Circor Naval Solutions Llc Dba Warren Pumps

4320-01-231-6727WL-39 POSSIBLE MATCH

CONNECTING ROD,PISTON

Possible match (shared part number)Circor Naval Solutions Llc Dba Warren Pumps

5935-01-277-2120B4039876-2 POSSIBLE MATCH

GUIDE,ELECTRICAL CONNECTOR

Possible match (shared part number)Department of the Army Hq United States Army Communications Research and Development Command

1680-01-479-6055A159-1A POSSIBLE MATCH

CONT,FIRE WARN

Possible match (shared part number)Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial

Cross-Reference Index

Part Number	Manufacturer
UU-45 PRIMARY	Circor Naval Solutions Llc Dba Warren Pumps (USA)

Reference documents

Reference	Meaning
A1591 PIECE 1	5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps
UU45YR	C/1 Advisory reference — outside the item-of-supply concept Circor Naval Solutions Llc Dba Warren Pumps
A-1591	D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps

Related Parts

4320-01-231-6705POSSIBLE MATCH

HOUSING,LIQUID PUMP

XY-24

4320-01-231-6726POSSIBLE MATCH

CONNECTING ROD,PISTON

WL-38

4320-01-231-6727POSSIBLE MATCH

CONNECTING ROD,PISTON

WL-39

5935-01-277-2120POSSIBLE MATCH

GUIDE,ELECTRICAL CONNECTOR

B4039876-2

1680-01-479-6055POSSIBLE MATCH

CONT,FIRE WARN

A159-1A

Frequently Asked Questions

What is NSN 4320-01-231-6704?

NSN 4320-01-231-6704 is a Housing,liquid Pump, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-231-6704?

NSN 4320-01-231-6704 has 1 manufacturer part number on file: UU-45 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-231-6704?

5 possible matches (shared part number, not a government interchangeability claim): 4320-01-231-6705, 4320-01-231-6726, 4320-01-231-6727. Verify interchangeability with system specifications before substitution.

What are the specifications of UU-45?

Key specifications for UU-45: Material: COPPER ALLOY. 1 specification is documented in the U.S. Government catalog.

Is NSN 4320-01-231-6704 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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