PartsTable TECHNICAL DATA SHEET

NSN 4820-01-182-7443Government record, cited

Valve, Shutoff4820-01-182-7443

NSN 4820-01-182-7443 · NIIN 011827443 · Part number 1NS125B

Alta Robbins, Inc. Dba Alta Robbins Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 1X438

Government record, cited

NSN 4820-01-182-7443 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-182-7443. Manufacturer of record part number: 1NS125B.

Also searched as 4820-01-182-7443 · 4820011827443 · NIIN 011827443 · 01-182-7443 · FSC 4820 Valves, Nonpowered · CAGE 1X438 · 1NS125B

Nearby stock numbers ← 4820-01-182-7441 Cartridge, Check Valve · 4820-01-182-7642 Disk, Valve →

4820-01-182-7443 — Valves, Nonpowered

Features

Valve,shutoff — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Alta Robbins, Inc. Dba Alta Robbins Inc

Identification

NSN: 4820-01-182-7443
NIIN: 011827443
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1NS125B
Manufacturer: Alta Robbins, Inc. Dba Alta Robbins Inc

General Description

The Valve,shutoff, cataloged under National Stock Number 4820-01-182-7443, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Alta Robbins, Inc. Dba Alta Robbins Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-182-7443
Primary Part Number	1NS125B
Item Name	Valve,shutoff
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Alta Robbins, Inc. Dba Alta Robbins 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
1NS125B PRIMARY	Alta Robbins, Inc. Dba Alta Robbins Inc (USA)

Reference documents

Reference	Meaning
1NS125B	5/9 Secondary reference Dynatech Frontier Corp Sub of Dynatech Corp

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 4820-01-182-7443?

NSN 4820-01-182-7443 is a Valve,shutoff, manufactured by Alta Robbins, Inc. Dba Alta Robbins Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-182-7443?

NSN 4820-01-182-7443 has 1 manufacturer part number on file: 1NS125B (Alta Robbins, Inc. Dba Alta Robbins Inc).

What are the specifications of 1NS125B?

Key specifications for 1NS125B: End Item Identification: LOW PRESSURE CALIBRATOR, P/N 1127-2, NSN 6695-01-123-3962. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-182-7443 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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