PartsTable TECHNICAL DATA SHEET

NSN 4820-01-123-1346Government record, cited

Seat, Valve4820-01-123-1346

NSN 4820-01-123-1346 · NIIN 011231346 · Part number 2850-0027-1

Mission Systems Orchard Park Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04577

Government record, cited

NSN 4820-01-123-1346 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-123-1346. Manufacturer of record part number: 2850-0027-1.

Also searched as 4820-01-123-1346 · 4820011231346 · NIIN 011231346 · 01-123-1346 · FSC 4820 Valves, Nonpowered · CAGE 04577 · 2850-0027-1 · PL 2850-0020-29 FIND 16 · PL 2850-0020-31 FIND 16

Nearby stock numbers ← 4820-01-123-1335 · 4820-01-123-1360 Disk, Valve →

4820-01-123-1346 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Mission Systems Orchard Park Inc

Identification

NSN: 4820-01-123-1346
NIIN: 011231346
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 2850-0027-1
Manufacturer: Mission Systems Orchard Park Inc

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-123-1346, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mission Systems Orchard Park Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Seat,valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Mission Systems Orchard Park Inc (CAGE 04577)

Technical Specifications

Parameter	Value
NSN	4820-01-123-1346
Primary Part Number	2850-0027-1
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Mission Systems Orchard Park Inc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
2850-0027-1 PRIMARY	Mission Systems Orchard Park Inc (USA)

Reference documents

Reference	Meaning
PL 2850-0020-29 FIND 16	5/9 Secondary reference Mission Systems Orchard Park Inc
2850-0027-1	3/9 Design control — primary reference Carleton Technologies Inc Div Tampa Facility
PL 2850-0020-31 FIND 16	5/9 Secondary reference Mission Systems Orchard Park Inc

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 4820-01-123-1346?

NSN 4820-01-123-1346 is a Seat,valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-123-1346?

NSN 4820-01-123-1346 has 1 manufacturer part number on file: 2850-0027-1 (Mission Systems Orchard Park Inc).

Is NSN 4820-01-123-1346 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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