PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40091Valve,expansion

Flagship Marine, Inc Dba Flagship Marine Inc · NSN 4820-01-619-5401 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-619-5401 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-619-5401. Primary manufacturer part number: 40091.
Features
  • Valve,expansion — FSC 4820
  • Refrigeration Capacity in Btu Per Hour: 53500.0
  • Valve Expansion Control Type: PRESSURE
  • 1 verified cross-reference
  • Primary manufacturer: Flagship Marine, Inc Dba Flagship Marine Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-619-5401, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flagship Marine, Inc Dba Flagship Marine Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-619-5401
Primary Part Number40091
Item NameValve,expansion
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlagship Marine, Inc Dba Flagship Marine Inc
StatusACTIVE
Refrigeration Capacity in Btu Per Hour53500.0
Valve Expansion Control TypePRESSURE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6105-00-241-5835 INTERCHANGEABLE
Motor,alternating Current
7330-00-241-817340091 INTERCHANGEABLE
Cleaver,meat
Victorinox Swiss Army, Inc.
3439-00-425-33082304-0091 INTERCHANGEABLE
Collet,heliweld Holder
Linde Llc
3460-00-528-323140091 INTERCHANGEABLE
Arbor,hole Saw
Black and Decker Us Inc
5342-00-620-50321630-0156-35005 INTERCHANGEABLE
Mount,resilient,weapon System
Atlantic India Rubber Co Inc
5330-00-701-6314PA7116 INTERCHANGEABLE
Gasket
Concentric Rockford Inc
5950-01-079-1310SM-A-945004 INTERCHANGEABLE
Transformer,power
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-01-416-7873J40117 INTERCHANGEABLE
Valve,foot
Pulsafeeder Inc
5305-01-530-356440091 INTERCHANGEABLE
Screw,cap,socket Head
Leslie Controls, Inc. Dba Leslie Controls Inc
8465-01-541-799740091 INTERCHANGEABLE
Hydration System
Camelbak Products, Llc Dba Camelbak
Cross-Reference Index
Part NumberManufacturer
40091 PRIMARY Flagship Marine, Inc Dba Flagship Marine Inc (USA)
Related Parts
6105-00-241-5835INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
7330-00-241-8173INTERCHANGEABLE
CLEAVER,MEAT
40091
3439-00-425-3308INTERCHANGEABLE
COLLET,HELIWELD HOLDER
2304-0091
3460-00-528-3231INTERCHANGEABLE
ARBOR,HOLE SAW
40091
5342-00-620-5032INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
1630-0156-35005
5330-00-701-6314INTERCHANGEABLE
GASKET
PA7116
5950-01-079-1310INTERCHANGEABLE
TRANSFORMER,POWER
SM-A-945004
4820-01-416-7873INTERCHANGEABLE
VALVE,FOOT
J40117
5305-01-530-3564INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
40091
8465-01-541-7997INTERCHANGEABLE
HYDRATION SYSTEM
40091

Frequently Asked Questions

What is NSN 4820-01-619-5401?

NSN 4820-01-619-5401 is a Valve,expansion, manufactured by Flagship Marine, Inc Dba Flagship Marine Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-619-5401?

NSN 4820-01-619-5401 has 1 cross-referenced part number: 40091 (Flagship Marine, Inc Dba Flagship Marine Inc).

What NSN replaces 4820-01-619-5401?

There are 10 known substitutes for 4820-01-619-5401: 6105-00-241-5835, 7330-00-241-8173, 3439-00-425-3308 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40091?

Key specifications for 40091: End Item Identification: AIR CONDITIONER; Refrigeration Capacity in Btu Per Hour: 53500.0; Valve Expansion Control Type: PRESSURE; Part Name Assigned by Controlling Agency: VALVE, EXPANSION, 5-8 TON. 4 total characteristics are documented in the Federal Logistics Information System.

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