Seat, Valve4820-01-087-7102

NSN 4820-01-087-7102 · NIIN 010877102

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-087-7102 · 4820010877102 · NIIN 010877102 · 01-087-7102 · FSC 4820 Valves, Nonpowered · 515-4695738 · 87552-0611 ITEM 1 · 515-4695738 ITEM 1

Nearby stock numbers ← 4820-01-087-7079 · 4820-01-087-7111 Parts Kit, Safety Relief Valve →

4820-01-087-7102 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 2.498 INCHES NOMINAL IN
Flange Diameter: 18.630 INCHES NOMINAL IN
Body Outside Diameter: 15.240 INCHES MINIMUM AND 15.245 INCHES MAXIMUM IN
Style Designator: PLAIN FLANGED
Material Document and Classification: QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter: 12.830 INCHES NOMINAL IN
Under Flange Height: 0.252 INCHES NOMINAL IN

Identification

NSN: 4820-01-087-7102
NIIN: 010877102
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-087-7102, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-087-7102
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flange Seat to Disk End Height	2.498 INCHES NOMINAL IN
Flange Diameter	18.630 INCHES NOMINAL IN
Body Outside Diameter	15.240 INCHES MINIMUM AND 15.245 INCHES MAXIMUM IN
Style Designator	PLAIN FLANGED
Material Document and Classification	QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter	12.830 INCHES NOMINAL IN
Under Flange Height	0.252 INCHES NOMINAL IN
Material	NICKEL ALLOY OVERALL
Seat Angle in Deg	10.000 NOMINAL
Seating Surface Shape	ANGULAR

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
515-4695738	D/9 Drawing number reference only U.S. Government activity
87552-0611 ITEM 1	3/2 Design control — primary reference U.S. Government activity
515-4695738 ITEM 1	3/2 Design control — primary reference U.S. Government activity

Frequently Asked Questions

What is NSN 4820-01-087-7102?

NSN 4820-01-087-7102 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-087-7102?

Key specifications for 4820-01-087-7102: Flange Seat to Disk End Height: 2.498 INCHES NOMINAL IN; Flange Diameter: 18.630 INCHES NOMINAL IN; Body Outside Diameter: 15.240 INCHES MINIMUM AND 15.245 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-087-7102 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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