PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P123Valve,vent

Alfred Conhagen, Inc. · NSN 4820-01-377-4068 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-377-4068 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-4068. Primary manufacturer part number: P123.
Features
  • Valve,vent — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Alfred Conhagen, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,vent, cataloged under National Stock Number 4820-01-377-4068, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Alfred Conhagen, Inc.. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,vent
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAlfred Conhagen, Inc. (CAGE 71639)
Technical Specifications
ParameterValue
NSN4820-01-377-4068
Primary Part NumberP123
Item NameValve,vent
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAlfred Conhagen, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5995-00-173-2421P-12-3 INTERCHANGEABLE
Cord Assembly,electrical
Fluke Electronics Corp
2910-00-287-316833043 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5930-00-296-4937 INTERCHANGEABLE
Detent,switch
3040-00-493-8636P1-23 INTERCHANGEABLE
Cam Follower
Roller Bearing Co of America, Inc Div Pic Design
6625-01-156-7869 INTERCHANGEABLE
Lead,test
5331-01-313-2975P123 INTERCHANGEABLE
O-Ring
Datamarine Intl Inc
5950-01-432-27658519515-1 INTERCHANGEABLE
Reactor
Honeywell International Inc. Dba Honeywell International
5961-01-510-3522P123 INTERCHANGEABLE
Transistor
Polyfet Rf Devices, Inc
1375-01-699-2213P-123 INTERCHANGEABLE
Cord,detonating
Detotec North America, Inc
Cross-Reference Index
Part NumberManufacturer
P123 PRIMARY Alfred Conhagen, Inc. (USA)
AA-1819 ITEM 15 Alfred Conhagen, Inc. (USA)
Related Parts
5995-00-173-2421INTERCHANGEABLE
CORD ASSEMBLY,ELECTRICAL
P-12-3
2910-00-287-3168INTERCHANGEABLE
FILTER ELEMENT,FLUID
33043
5930-00-296-4937INTERCHANGEABLE
DETENT,SWITCH
3040-00-493-8636INTERCHANGEABLE
CAM FOLLOWER
P1-23
6625-01-156-7869INTERCHANGEABLE
LEAD,TEST
5331-01-313-2975INTERCHANGEABLE
O-RING
P123
5950-01-432-2765INTERCHANGEABLE
REACTOR
8519515-1
5961-01-510-3522INTERCHANGEABLE
TRANSISTOR
P123
1375-01-699-2213INTERCHANGEABLE
CORD,DETONATING
P-123

Frequently Asked Questions

What is NSN 4820-01-377-4068?

NSN 4820-01-377-4068 is a Valve,vent, manufactured by Alfred Conhagen, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-377-4068?

NSN 4820-01-377-4068 has 2 cross-referenced part numbers: P123 (Alfred Conhagen, Inc.), AA-1819 ITEM 15 (Alfred Conhagen, Inc.).

What NSN replaces 4820-01-377-4068?

There are 9 known substitutes for 4820-01-377-4068: 5995-00-173-2421, 2910-00-287-3168, 5930-00-296-4937 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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