PartsTable TECHNICAL DATA SHEET

NSN 4820-01-650-2373Government record, cited

Disk, Valve4820-01-650-2373

NSN 4820-01-650-2373 · NIIN 016502373 · Part number B-4C4-1

Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 3EBR0

Government record, cited

NSN 4820-01-650-2373 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-650-2373. Manufacturer of record part number: B-4C4-1.

Also searched as 4820-01-650-2373 · 4820016502373 · NIIN 016502373 · 01-650-2373 · FSC 4820 Valves, Nonpowered · CAGE 3EBR0 · B-4C4-1

Nearby stock numbers ← 4820-01-650-2371 Valve, Gate · 4820-01-650-2375 Valve, Regulating, Fluid Pressure →

4820-01-650-2373 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Special Test Features: BODY MATERIAL: BRASS; O-RING MATERIAL: BUNA N RUBBER; CONNECTION 2 TYPE: FEMALE NPT; CONNECTION 1 TYPE: FEMALE NPT; CONNECTION 1 SIZE: .5"; CONNECTION 2 SIZE: .5";CLEANING PROCESS: STANDARD CLEANING AND PACKAGING (SC-10);CRACKING PRESSURE: 1PSI (0.07 BAR, 0.0007MPA); CVA MAXIMUM: 0.470
Nominal Thread Size: 0.250 INCHES IN
Material: COPPER ALLOY
Thread Series Designator: NPT
1 manufacturer part number on file
Manufacturer of record: Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok

Identification

NSN: 4820-01-650-2373
NIIN: 016502373
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: B-4C4-1
Manufacturer: Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok

General Description

The Disk,valve, cataloged under National Stock Number 4820-01-650-2373, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-650-2373
Primary Part Number	B-4C4-1
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok
Status	ACTIVE
Special Test Features	BODY MATERIAL: BRASS; O-RING MATERIAL: BUNA N RUBBER; CONNECTION 2 TYPE: FEMALE NPT; CONNECTION 1 TYPE: FEMALE NPT; CONNECTION 1 SIZE: .5"; CONNECTION 2 SIZE: .5";CLEANING PROCESS: STANDARD CLEANING AND PACKAGING (SC-10);CRACKING PRESSURE: 1PSI (0.07 BAR, 0.0007MPA); CVA MAXIMUM: 0.470
Nominal Thread Size	0.250 INCHES IN
Material	COPPER ALLOY
Thread Series Designator	NPT

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
B-4C4-1 PRIMARY	Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok (USA)

Reference documents

Reference	Meaning
B-4C4-1	5/9 Secondary reference Vmed Technology Inc

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 4820-01-650-2373?

NSN 4820-01-650-2373 is a Disk,valve, manufactured by Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-650-2373?

NSN 4820-01-650-2373 has 1 manufacturer part number on file: B-4C4-1 (Central California Fluid System Technologies Dba Swagelok Ventura Div Swagelok Southern Californiaswagelok Ventura/swagelok).

What are the specifications of B-4C4-1?

Key specifications for B-4C4-1: Special Test Features: BODY MATERIAL: BRASS; O-RING MATERIAL: BUNA N RUBBER; CONNECTION 2 TYPE: FEMALE NPT; CONNECTION 1 TYPE: FEMALE NPT; CONNECTION 1 SIZE: .5"; CONNECTION 2 SIZE: .5";CLEANING PROCESS: STANDARD CLEANING AND PACKAGING (SC-10);CRACKING PRESSURE: 1PSI (0.07 BAR, 0.0007MPA); CVA MAXIMUM: 0.470; Nominal Thread Size: 0.250 INCHES IN; Part Name Assigned by Controlling Agency: PPOPPET CHECK VALVE, FIXED PRESSURE; End Item Identification: CONSOLE GSE. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-650-2373 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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