PartsTable TECHNICAL DATA SHEET

NSN 4820-01-372-3492Government record, cited

Disk, Valve4820-01-372-3492

NSN 4820-01-372-3492 · NIIN 013723492 · Part number 202172 PIEC

Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 76364

Government record, cited

NSN 4820-01-372-3492 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-372-3492. Manufacturer of record part number: 202172 PIEC.

Also searched as 4820-01-372-3492 · 4820013723492 · NIIN 013723492 · 01-372-3492 · FSC 4820 Valves, Nonpowered · CAGE 76364 · 202172 PIEC · 202172 PIECE 6 · 202172 PC. NO. · 8031385789 · 202172 PC. NO.

Nearby stock numbers ← 4820-01-372-3484 Valve, Rotary, Selector · 4820-01-372-4030 Valve, Linear, Directional Control →

4820-01-372-3492 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 3.062 INCHES NOMINAL IN
Material Document and Classification: ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
Nominal Thread Size: 1.750 INCHES IN
Media for Which Designed: WATER, SALT
Thread Class: 2B
Material: COPPER ALLOY 922
Thread Series Designator: UNF

Identification

NSN: 4820-01-372-3492
NIIN: 013723492
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 202172 PIEC
Manufacturer: Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-372-3492, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-372-3492
Primary Part Number	202172 PIEC
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
Status	ACTIVE
Outside Diameter	3.062 INCHES NOMINAL IN
Material Document and Classification	ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
Nominal Thread Size	1.750 INCHES IN
Media for Which Designed	WATER, SALT
Thread Class	2B
Material	COPPER ALLOY 922
Thread Series Designator	UNF

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 9

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

4730-01-373-6532803-1385789 PIECE 3 POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

Possible match (shared part number)Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc

4820-01-373-67081385789 PIECE 6 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Naval Ship Systems Command

4820-01-374-0128803-1385789 PIECE 8 SIZE 3 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Naval Ship Systems Command

4730-01-520-36371385789 PC.3(2-1/2 INCH) POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

Possible match (shared part number)Naval Ship Systems Command

4510-01-539-0903803-1385789 POSSIBLE MATCH

DRAIN,FLOOR

Possible match (shared part number)Naval Sea Systems Command

4510-01-539-0913803-1385789TYPED-3IN SH 6 PC 16 POSSIBLE MATCH

STRAINER,WASTE DRAIN

Possible match (shared part number)Naval Sea Systems Command

4510-01-539-0944803-1385789TYPED-3IN SH 6 PC 4 POSSIBLE MATCH

BAFFLE,DECK DRAIN

Possible match (shared part number)Naval Sea Systems Command

4510-01-539-6281803-1385789TYDSZ2INAL706 POSSIBLE MATCH

DRAIN,FLOOR

Possible match (shared part number)Naval Sea Systems Command

4510-01-609-3725803-1385789G 1.5IN POSSIBLE MATCH

DRAIN,FLOOR

Possible match (shared part number)National Brass Company

Cross-Reference Index

Part Number	Manufacturer
202172 PIEC PRIMARY	Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)

Reference documents

Reference	Meaning
202172 PIECE 6	5/9 Secondary reference Naval Sea Systems Command
202172 PC. NO.	C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command
8031385789	D/9 Drawing number reference only U.S. Government activity
202172 PC. NO.	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
202172 PIECE 6	5/9 Secondary reference U.S. Government activity
1385789 TYPE A SIZE 2 IN. PC 6	3/2 Design control — primary reference U.S. Government activity

Related Parts

4730-01-373-6532POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

803-1385789 PIECE 3

4820-01-373-6708POSSIBLE MATCH

DISK,VALVE

1385789 PIECE 6

4820-01-374-0128POSSIBLE MATCH

STEM,FLUID VALVE

803-1385789 PIECE 8 SIZE 3

4730-01-520-3637POSSIBLE MATCH

STRAINER ELEMENT,SEDIMENT

1385789 PC.3(2-1/2 INCH)

4510-01-539-0903POSSIBLE MATCH

DRAIN,FLOOR

803-1385789

4510-01-539-0913POSSIBLE MATCH

STRAINER,WASTE DRAIN

803-1385789TYPED-3IN SH 6 PC 16

4510-01-539-0944POSSIBLE MATCH

BAFFLE,DECK DRAIN

803-1385789TYPED-3IN SH 6 PC 4

4510-01-539-6281POSSIBLE MATCH

DRAIN,FLOOR

803-1385789TYDSZ2INAL706

4510-01-609-3725POSSIBLE MATCH

DRAIN,FLOOR

803-1385789G 1.5IN

Frequently Asked Questions

What is NSN 4820-01-372-3492?

NSN 4820-01-372-3492 is a Disk,valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-372-3492?

NSN 4820-01-372-3492 has 1 manufacturer part number on file: 202172 PIEC (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).

What NSN replaces 4820-01-372-3492?

9 possible matches (shared part number, not a government interchangeability claim): 4730-01-373-6532, 4820-01-373-6708, 4820-01-374-0128. Verify interchangeability with system specifications before substitution.

What are the specifications of 202172 PIEC?

Key specifications for 202172 PIEC: Overall Height: 0.750 INCHES NOMINAL IN; Outside Diameter: 3.062 INCHES NOMINAL IN; Material Document and Classification: ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Nominal Thread Size: 1.750 INCHES IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-372-3492 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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