PartsTable TECHNICAL DATA SHEET

NSN 4820-01-030-7123Government record, cited

Seat, Valve4820-01-030-7123

NSN 4820-01-030-7123 · NIIN 010307123 · Part number SS845-2109844PC9

Naval Sea Systems Command · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 53711

Government record, cited

NSN 4820-01-030-7123 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-030-7123. Manufacturer of record part number: SS845-2109844PC9.

Also searched as 4820-01-030-7123 · 4820010307123 · NIIN 010307123 · 01-030-7123 · FSC 4820 Valves, Nonpowered · CAGE 53711 · SS845-2109844PC9 · SS845-2109844 · 2640-744PC9

Nearby stock numbers ← 4820-01-030-7122 Seat, Valve · 4820-01-030-7160 Disconnect, Pylon Fuel →

4820-01-030-7123 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Body Outside Diameter: 2.461 INCHES MINIMUM AND 2.465 INCHES MAXIMUM IN
Seal Accommodation Type: GROOVED
Style Designator: PLAIN
Body Inside Diameter: 2.119 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
Material: PLASTIC POLYAMIDE NYLON OVERALL
Seating Surface Shape: FLAT
1 manufacturer part number on file

Identification

NSN: 4820-01-030-7123
NIIN: 010307123
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SS845-2109844PC9
Manufacturer: Naval Sea Systems Command

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-030-7123, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-030-7123
Primary Part Number	SS845-2109844PC9
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Naval Sea Systems Command
Status	ACTIVE
Body Outside Diameter	2.461 INCHES MINIMUM AND 2.465 INCHES MAXIMUM IN
Seal Accommodation Type	GROOVED
Style Designator	PLAIN
Body Inside Diameter	2.119 INCHES MINIMUM AND 2.127 INCHES MAXIMUM IN
Material	PLASTIC POLYAMIDE NYLON OVERALL
Seating Surface Shape	FLAT

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

Part Number	Manufacturer
SS845-2109844PC9	Naval Sea Systems Command (USA)

Reference documents

Reference	Meaning
SS845-2109844	D/9 Drawing number reference only Naval Sea Systems Command
2640-744PC9	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-030-7123?

NSN 4820-01-030-7123 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-030-7123?

NSN 4820-01-030-7123 has 1 manufacturer part number on file: SS845-2109844PC9 (Naval Sea Systems Command).

What are the specifications of SS845-2109844PC9?

Key specifications for SS845-2109844PC9: Overall Height: 0.312 INCHES NOMINAL IN; Body Outside Diameter: 2.461 INCHES MINIMUM AND 2.465 INCHES MAXIMUM IN; Seal Accommodation Type: GROOVED; Style Designator: PLAIN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-030-7123 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.

PartsTable Design LLC · partstable.com