Valve, Relief, Pressure and Temper4820-01-100-8420

NSN 4820-01-100-8420 · NIIN 011008420 · Part number RVS21K

Transdigm Inc Div Adelwiggins Group · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79326

Government record, cited

NSN 4820-01-100-8420 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-100-8420. Manufacturer of record part number: RVS21K.

Also searched as 4820-01-100-8420 · 4820011008420 · NIIN 011008420 · 01-100-8420 · FSC 4820 Valves, Nonpowered · CAGE 79326 · RVS21K · 70070-30901-102

Nearby stock numbers ← 4820-01-100-8406 · 4820-01-100-8522 →

4820-01-100-8420 — Valves, Nonpowered

Features

Valve,relief,pressure and Temper — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Transdigm Inc Div Adelwiggins Group

Identification

NSN: 4820-01-100-8420
NIIN: 011008420
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: RVS21K
Manufacturer: Transdigm Inc Div Adelwiggins Group

General Description

The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-100-8420, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Transdigm Inc Div Adelwiggins Group. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,relief,pressure and Temper
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (CAGE 78286); Transdigm Inc Div Adelwiggins Group (CAGE 79326)

Technical Specifications

Parameter	Value
NSN	4820-01-100-8420
Primary Part Number	RVS21K
Item Name	Valve,relief,pressure and Temper
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Transdigm Inc Div Adelwiggins Group
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
70070-30901-102	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
RVS21K PRIMARY	Transdigm Inc Div Adelwiggins Group (USA)

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 4820-01-100-8420?

NSN 4820-01-100-8420 is a Valve,relief,pressure and Temper, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-100-8420?

NSN 4820-01-100-8420 has 2 manufacturer part numbers on file: 70070-30901-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), RVS21K (Transdigm Inc Div Adelwiggins Group).

Is NSN 4820-01-100-8420 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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