Seat, Valve4820-01-134-8843

NSN 4820-01-134-8843 · NIIN 011348843

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-134-8843 · 4820011348843 · NIIN 011348843 · 01-134-8843 · FSC 4820 Valves, Nonpowered · 2620-926X14 PC 67 1-4IN · 253496 · 2620-926X14

Nearby stock numbers ← 4820-01-134-8796 · 4820-01-134-8844 Seat, Valve →

4820-01-134-8843 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.085 INCHES NOMINAL IN
Flange Diameter: 0.992 INCHES NOMINAL IN
Body Outside Diameter: 0.868 INCHES NOMINAL IN
Body Inside Diameter: 0.438 INCHES NOMINAL IN
Under Flange Height: 0.082 INCHES NOMINAL IN
Material: PLASTIC OVERALL

Identification

NSN: 4820-01-134-8843
NIIN: 011348843
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-134-8843, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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	4820-01-134-8843
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flange Seat to Disk End Height	0.085 INCHES NOMINAL IN
Flange Diameter	0.992 INCHES NOMINAL IN
Body Outside Diameter	0.868 INCHES NOMINAL IN
Body Inside Diameter	0.438 INCHES NOMINAL IN
Under Flange Height	0.082 INCHES NOMINAL IN
Material	PLASTIC OVERALL

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 1

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

4820-01-203-77062621-926-03 PIECE 8 1-4IN POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

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

Reference documents

Reference	Meaning
2620-926X14 PC 67 1-4IN	3/2 Design control — primary reference U.S. Government activity
253496	D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding
2620-926X14	D/9 Drawing number reference only U.S. Government activity

Related Parts

4820-01-203-7706POSSIBLE MATCH

STEM,FLUID VALVE

2621-926-03 PIECE 8 1-4IN

Frequently Asked Questions

What is NSN 4820-01-134-8843?

NSN 4820-01-134-8843 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-134-8843?

1 possible match (shared part number, not a government interchangeability claim): 4820-01-203-7706. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-134-8843?

Key specifications for 4820-01-134-8843: Flange Seat to Disk End Height: 0.085 INCHES NOMINAL IN; Flange Diameter: 0.992 INCHES NOMINAL IN; Body Outside Diameter: 0.868 INCHES NOMINAL IN; Body Inside Diameter: 0.438 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-134-8843 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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