PartsTable TECHNICAL DATA SHEET

NSN 4820-01-630-4980Government record, cited

Valve, Expansion4820-01-630-4980

NSN 4820-01-630-4980 · NIIN 016304980 · Part number 5003920

Mainstream Engineering Corp · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0A0B7

Government record, cited

NSN 4820-01-630-4980 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-630-4980. Manufacturer of record part number: 5003920.

Also searched as 4820-01-630-4980 · 4820016304980 · NIIN 016304980 · 01-630-4980 · FSC 4820 Valves, Nonpowered · CAGE 0A0B7 · 5003920 · 13-1-0453

Nearby stock numbers ← 4820-01-630-4973 Valve, Safety Relief · 4820-01-630-5022 Valve, Check →

4820-01-630-4980 — Valves, Nonpowered

Features

Valve,expansion — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Mainstream Engineering Corp

Identification

NSN: 4820-01-630-4980
NIIN: 016304980
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 5003920
Manufacturer: Mainstream Engineering Corp

General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-630-4980, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mainstream Engineering Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Valve,expansion
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Mainstream Engineering Corp (CAGE 0A0B7)

Technical Specifications

Parameter	Value
NSN	4820-01-630-4980
Primary Part Number	5003920
Item Name	Valve,expansion
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Mainstream Engineering Corp
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
5003920 PRIMARY	Mainstream Engineering Corp (USA)

Reference documents

Reference	Meaning
13-1-0453	5/2 Secondary 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 4820-01-630-4980?

NSN 4820-01-630-4980 is a Valve,expansion, manufactured by Mainstream Engineering Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-630-4980?

NSN 4820-01-630-4980 has 1 manufacturer part number on file: 5003920 (Mainstream Engineering Corp).

Is NSN 4820-01-630-4980 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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