PartsTable TECHNICAL DATA SHEET

NSN 4820-01-374-0128Government record, cited

Stem, Fluid Valve4820-01-374-0128

NSN 4820-01-374-0128 · NIIN 013740128

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-374-0128 · 4820013740128 · NIIN 013740128 · 01-374-0128 · FSC 4820 Valves, Nonpowered · 803-1385789 PC. · 803-1385789 PIECE 8 SIZE 3 · 803-1385789

Nearby stock numbers ← 4820-01-374-0107 Valve, Gate · 4820-01-374-0129 Stem, Fluid Valve →

4820-01-374-0128 — Valves, Nonpowered

Features

Stem,fluid Valve — FSC 4820
Furnished Items and Quantity: 1 POPPET
Valve Type for Which Designed: LIFT-CHECK
Largest Outside Diameter: 1.250 INCHES NOMINAL IN
Stem Actuating End Type: THREADED EXTERNALLY
Valve Model Number for Which Designed: TYPE G
Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
Valve Size for Which Designed: 1.250 INCHES IN

Identification

NSN: 4820-01-374-0128
NIIN: 013740128
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-374-0128, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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.

Technical Specifications

Parameter	Value
NSN	4820-01-374-0128
Item Name	Stem,fluid Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Furnished Items and Quantity	1 POPPET
Valve Type for Which Designed	LIFT-CHECK
Largest Outside Diameter	1.250 INCHES NOMINAL IN
Stem Actuating End Type	THREADED EXTERNALLY
Valve Model Number for Which Designed	TYPE G
Material Document and Classification	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
Valve Size for Which Designed	1.250 INCHES IN
Material	NICKEL 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 6

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

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
803-1385789 PC.	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
803-1385789 PIECE 8 SIZE 3	3/2 Design control — primary reference U.S. Government activity
803-1385789	D/9 Drawing number reference only U.S. Government activity

Related Parts

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 4820-01-374-0128?

NSN 4820-01-374-0128 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-374-0128?

6 possible matches (shared part number, not a government interchangeability claim): 4730-01-520-3637, 4510-01-539-0903, 4510-01-539-0913. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-374-0128?

Key specifications for 4820-01-374-0128: Furnished Items and Quantity: 1 POPPET; Valve Type for Which Designed: LIFT-CHECK; Largest Outside Diameter: 1.250 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-374-0128 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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