PartsTable TECHNICAL DATA SHEET

NSN 4320-01-083-7990Government record, cited

Pump Cylinder Compl4320-01-083-7990

NSN 4320-01-083-7990 · NIIN 010837990 · Part number XY-23

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

Government record, cited

NSN 4320-01-083-7990 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-083-7990. Manufacturer of record part number: XY-23.

Also searched as 4320-01-083-7990 · 4320010837990 · NIIN 010837990 · 01-083-7990 · FSC 4320 Power and Hand Pumps · CAGE 63857 · XY-23 · BS5-2349A4 · BS5-2349A4PC131

Nearby stock numbers ← 4320-01-083-7361 · 4320-01-083-8011 Deflector, Dirt and Liquid →

Features

Pump Cylinder Compl — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Circor Naval Solutions Llc Dba Warren Pumps

Identification

NSN: 4320-01-083-7990
NIIN: 010837990
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: XY-23
Manufacturer: Circor Naval Solutions Llc Dba Warren Pumps

General Description

The Pump Cylinder Compl, cataloged under National Stock Number 4320-01-083-7990, 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. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Pump Cylinder Compl
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Circor Naval Solutions Llc Dba Warren Pumps (CAGE 63857)

Technical Specifications

Parameter	Value
NSN	4320-01-083-7990
Primary Part Number	XY-23
Item Name	Pump Cylinder Compl
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Circor Naval Solutions Llc Dba Warren Pumps
Status	ACTIVE

Lifecycle & Compliance

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

⇄ Related Items 6

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

4320-01-083-8105UW-14 POSSIBLE MATCH

HEAD,HYDRAULIC MOTOR-PUMP

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

4320-01-083-8107D-0995 REV A POSSIBLE MATCH

PEDESTAL ASSEMBLY

Possible match (shared part number)Camar Corp.

4320-01-084-0237WN-3/WN-4 POSSIBLE MATCH

MAIN LEVER ADAPTER

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

4320-01-084-0528XG-7 POSSIBLE MATCH

PUMP PISTON ASSEMBLY

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

4320-01-084-0529L-2331 POSSIBLE MATCH

AUXILIARY LEVER

Possible match (shared part number)Rps-Fl, Inc. Dba Rps Inc

4320-01-084-3642TB-28 POSSIBLE MATCH

STEAM CHEST ASSEMBLY

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

Cross-Reference Index

Part Number	Manufacturer
XY-23 PRIMARY	Circor Naval Solutions Llc Dba Warren Pumps (USA)

Reference documents

Reference	Meaning
BS5-2349A4	D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps
BS5-2349A4PC131	5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps

Related Parts

4320-01-083-8105POSSIBLE MATCH

HEAD,HYDRAULIC MOTOR-PUMP

UW-14

4320-01-083-8107POSSIBLE MATCH

PEDESTAL ASSEMBLY

D-0995 REV A

4320-01-084-0237POSSIBLE MATCH

MAIN LEVER ADAPTER

WN-3/WN-4

4320-01-084-0528POSSIBLE MATCH

PUMP PISTON ASSEMBLY

XG-7

4320-01-084-0529POSSIBLE MATCH

AUXILIARY LEVER

L-2331

4320-01-084-3642POSSIBLE MATCH

STEAM CHEST ASSEMBLY

TB-28

Frequently Asked Questions

What is NSN 4320-01-083-7990?

NSN 4320-01-083-7990 is a Pump Cylinder Compl, 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 4320-01-083-7990?

NSN 4320-01-083-7990 has 1 manufacturer part number on file: XY-23 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-083-7990?

6 possible matches (shared part number, not a government interchangeability claim): 4320-01-083-8105, 4320-01-083-8107, 4320-01-084-0237. Verify interchangeability with system specifications before substitution.

Is NSN 4320-01-083-7990 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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