Disk, Rupturable4820-00-790-2889

NSN 4820-00-790-2889 · NIIN 007902889 · Part number 77D0U021

Bs&b Safety Systems Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 32874

Government record, cited

NSN 4820-00-790-2889 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-790-2889. Manufacturer of record part number: 77D0U021.

Also searched as 4820-00-790-2889 · 4820007902889 · NIIN 007902889 · 00-790-2889 · FSC 4820 Valves, Nonpowered · CAGE 32874 · 77D0U021 · 3-150-72-8BV

Nearby stock numbers ← 4820-00-790-2888 · 4820-00-790-2890 →

4820-00-790-2889 — Valves, Nonpowered

Features

Disk,rupturable — FSC 4820
Disk Size: 5.000 INCHES IN
2 manufacturer part numbers on file
Manufacturer of record: Bs&b Safety Systems Llc

Identification

NSN: 4820-00-790-2889
NIIN: 007902889
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 77D0U021
Manufacturer: Bs&b Safety Systems Llc

General Description

The Disk,rupturable, cataloged under National Stock Number 4820-00-790-2889, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bs&b Safety Systems Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-00-790-2889
Primary Part Number	77D0U021
Item Name	Disk,rupturable
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Bs&b Safety Systems Llc
Status	ACTIVE
Disk Size	5.000 INCHES IN

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
77D0U021 PRIMARY	Bs&b Safety Systems Llc (USA)
3-150-72-8BV	Bs&b Safety Systems Llc (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 4820-00-790-2889?

NSN 4820-00-790-2889 is a Disk,rupturable, manufactured by Bs&b Safety Systems Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-790-2889?

NSN 4820-00-790-2889 has 2 manufacturer part numbers on file: 77D0U021 (Bs&b Safety Systems Llc), 3-150-72-8BV (Bs&b Safety Systems Llc).

What are the specifications of 77D0U021?

Key specifications for 77D0U021: Disk Size: 5.000 INCHES IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-00-790-2889 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