PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50308Valve,check

Mission Systems Davenport Inc. · NSN 4820-01-078-1348 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-078-1348 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-078-1348. Primary manufacturer part number: 50308.
Features
  • Valve,check — FSC 4820
  • Nominal Outside Diameter: 4.750 INCHES ALL ENDS IN
  • Face to Face Distance: 5.000 INCHES IN
  • Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
  • Mounting Position: VERTICAL
  • FSC Application Data: TANK ASSEMBLY,EXTERNAL FUEL,AIRCRAFT
  • 2 verified cross-references
  • Primary manufacturer: Mission Systems Davenport Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-078-1348, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mission Systems Davenport Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-078-1348
Primary Part Number50308
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMission Systems Davenport Inc.
StatusACTIVE
Nominal Outside Diameter4.750 INCHES ALL ENDS IN
Face to Face Distance5.000 INCHES IN
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Mounting PositionVERTICAL
FSC Application DataTANK ASSEMBLY,EXTERNAL FUEL,AIRCRAFT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4320-00-160-949850308 INTERCHANGEABLE
Ring,lantern
Waterous Company
5330-00-179-0970 INTERCHANGEABLE
Seal,plain Encased
4810-00-470-653360960 INTERCHANGEABLE
Valve,linear,directional Control
Cadillac Gage Textron Inc.
5950-00-880-0432K-5799 INTERCHANGEABLE
Transformer,power
Keytronics, Inc. Div Api Technologies Corp- Magnetics
5905-00-910-0730 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5310-00-933-8119MS35338-137 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5985-01-012-48112142522-1 INTERCHANGEABLE
Adapter,waveguide
Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div
5855-01-656-5921 INTERCHANGEABLE
Illuminator,integrated,small Arm
Cross-Reference Index
Part NumberManufacturer
50308 PRIMARY Mission Systems Davenport Inc. (USA)
60960 PRIMARY Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems (USA)
Related Parts
4320-00-160-9498INTERCHANGEABLE
RING,LANTERN
50308
5330-00-179-0970INTERCHANGEABLE
SEAL,PLAIN ENCASED
4810-00-470-6533INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
60960
5950-00-880-0432INTERCHANGEABLE
TRANSFORMER,POWER
K-5799
5905-00-910-0730INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5310-00-933-8119INTERCHANGEABLE
WASHER,LOCK
MS35338-137
5985-01-012-4811INTERCHANGEABLE
ADAPTER,WAVEGUIDE
2142522-1
5855-01-656-5921INTERCHANGEABLE
ILLUMINATOR,INTEGRATED,SMALL ARM

Frequently Asked Questions

What is NSN 4820-01-078-1348?

NSN 4820-01-078-1348 is a Valve,check, manufactured by Mission Systems Davenport Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-078-1348?

NSN 4820-01-078-1348 has 2 cross-referenced part numbers: 50308 (Mission Systems Davenport Inc.), 60960 (Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems).

What NSN replaces 4820-01-078-1348?

There are 8 known substitutes for 4820-01-078-1348: 4320-00-160-9498, 5330-00-179-0970, 4810-00-470-6533 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50308?

Key specifications for 50308: Nominal Outside Diameter: 4.750 INCHES ALL ENDS IN; Face to Face Distance: 5.000 INCHES IN; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Mounting Position: VERTICAL. 7 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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