Valve, Pressure Equalizing, Gaseou4820-01-642-8189

NSN 4820-01-642-8189 · NIIN 016428189

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-642-8189 · 4820016428189 · NIIN 016428189 · 01-642-8189 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-642-8185 Gear Operator, Valve · 4820-01-642-8320 Valve, Safety Relief →

4820-01-642-8189 — Valves, Nonpowered

Features

Valve,pressure Equalizing,gaseou — FSC 4820
Flow Control Device: POPPET
First End Width Across Flats: 1.125 INCHES NOMINAL IN
Body Style: STRAIGHT THRU
Face to Face Distance: 1.125 INCHES NOMINAL IN
First End Flange Outside Diameter: 0.310 INCHES NOMINAL IN
End Connection Quantity: 2
Second End Style Designator: PLAIN

Identification

NSN: 4820-01-642-8189
NIIN: 016428189
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-642-8189, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-642-8189
Item Name	Valve,pressure Equalizing,gaseou
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Flow Control Device	POPPET
First End Width Across Flats	1.125 INCHES NOMINAL IN
Body Style	STRAIGHT THRU
Face to Face Distance	1.125 INCHES NOMINAL IN
First End Flange Outside Diameter	0.310 INCHES NOMINAL IN
End Connection Quantity	2
Second End Style Designator	PLAIN
First End Connection Type	THREADED EXTERNAL PIPE
Material	STEEL BODY
Second End Connection Type	THREADED INTERNAL PIPE
Second End Width Across Flats	1.125 INCHES NOMINAL 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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
2302C-400-SETAT300PSIG	3/2 Design control — primary 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 4820-01-642-8189?

NSN 4820-01-642-8189 is a Valve,pressure Equalizing,gaseou, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-642-8189?

Key specifications for 4820-01-642-8189: Flow Control Device: POPPET; First End Width Across Flats: 1.125 INCHES NOMINAL IN; Body Style: STRAIGHT THRU; Face to Face Distance: 1.125 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-642-8189 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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