PartsTable TECHNICAL DATA SHEET

NSN 4820-01-153-1437Government record, cited

Seat, Valve4820-01-153-1437

NSN 4820-01-153-1437 · NIIN 011531437 · Part number 206944 PIECE 4 AND 30

Huntington Ingalls Inc Div Newport News Shipbuilding · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 43689

Government record, cited

NSN 4820-01-153-1437 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-153-1437. Manufacturer of record part number: 206944 PIECE 4 AND 30.

Also searched as 4820-01-153-1437 · 4820011531437 · NIIN 011531437 · 01-153-1437 · FSC 4820 Valves, Nonpowered · CAGE 43689 · 206944 PIECE 4 AND 30 · 206944 PIECE 4 · 206944

Nearby stock numbers ← 4820-01-153-1436 Seat, Valve · 4820-01-153-1438 Seat, Valve →

4820-01-153-1437 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Huntington Ingalls Inc Div Newport News Shipbuilding

Identification

NSN: 4820-01-153-1437
NIIN: 011531437
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 206944 PIECE 4 AND 30
Manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-153-1437, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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	Seat,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Huntington Ingalls Inc Div Newport News Shipbuilding (CAGE 43689)

Technical Specifications

Parameter	Value
NSN	4820-01-153-1437
Primary Part Number	206944 PIECE 4 AND 30
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Huntington Ingalls Inc Div Newport News Shipbuilding
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

⇄ Related Items 7

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

4820-01-153-1438206944 PIECE 47 POSSIBLE MATCH

SEAT,VALVE

Possible match (shared part number)Huntington Ingalls Inc Div Newport News Shipbuilding

4820-01-153-1543206944 PIECE 12 POSSIBLE MATCH

GUIDE,DISK VALVE

Possible match (shared part number)Huntington Ingalls Inc Div Newport News Shipbuilding

4820-01-153-1544206944 ASSY 99 POSSIBLE MATCH

VALVE,GLOBE

Possible match (shared part number)Derbyshire Machine & Tool Co

4820-01-153-1629206944 PIECE 6 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)Huntington Ingalls Inc Div Newport News Shipbuilding

4820-01-154-3736206944 PIECE 8 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Huntington Ingalls Inc Div Newport News Shipbuilding

4820-01-159-9790206944-07 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Hunt Valve Company, Inc.

4820-01-160-8351 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)

Cross-Reference Index

Part Number	Manufacturer
206944 PIECE 4 AND 30 PRIMARY	Huntington Ingalls Inc Div Newport News Shipbuilding (USA)

Reference documents

Reference	Meaning
206944 PIECE 4	5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding
206944	D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding

Related Parts

4820-01-153-1438POSSIBLE MATCH

SEAT,VALVE

206944 PIECE 47

4820-01-153-1543POSSIBLE MATCH

GUIDE,DISK VALVE

206944 PIECE 12

4820-01-153-1544POSSIBLE MATCH

VALVE,GLOBE

206944 ASSY 99

4820-01-153-1629POSSIBLE MATCH

DISK,VALVE

206944 PIECE 6

4820-01-154-3736POSSIBLE MATCH

STEM,FLUID VALVE

206944 PIECE 8

4820-01-159-9790POSSIBLE MATCH

STEM,FLUID VALVE

206944-07

4820-01-160-8351POSSIBLE MATCH

DISK,VALVE

Frequently Asked Questions

What is NSN 4820-01-153-1437?

NSN 4820-01-153-1437 is a Seat,valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-153-1437?

NSN 4820-01-153-1437 has 1 manufacturer part number on file: 206944 PIECE 4 AND 30 (Huntington Ingalls Inc Div Newport News Shipbuilding).

What NSN replaces 4820-01-153-1437?

7 possible matches (shared part number, not a government interchangeability claim): 4820-01-153-1438, 4820-01-153-1543, 4820-01-153-1544. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-153-1437 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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