PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50309Valve,pilot Float Operated

Mission Systems Davenport Inc. · NSN 4820-01-074-8379 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-074-8379 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-074-8379. Primary manufacturer part number: 50309.
Features
  • Valve,pilot Float Operated — FSC 4820
  • General Characteristics Item Description: O/A DIM. 2.62 IN. W BY 3.31 IN. H BY 4.08 IN. LG IN
  • 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,pilot Float Operated, cataloged under National Stock Number 4820-01-074-8379, 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 1 verified specification, 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-074-8379
Primary Part Number50309
Item NameValve,pilot Float Operated
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMission Systems Davenport Inc.
StatusACTIVE
General Characteristics Item DescriptionO/A DIM. 2.62 IN. W BY 3.31 IN. H BY 4.08 IN. LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-083-8993BE00326-001 INTERCHANGEABLE
Transformer,power Autotransforme
Basler Electric Co
3020-00-231-8710 INTERCHANGEABLE
Link,roller Chain
5330-00-291-162643-1156 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
3010-00-336-642160961 INTERCHANGEABLE
Clutch,positive,nonvehicular
Ameridrives International Llc Dba Ameridrives International Llc
3010-00-512-0590D-7330-1 INTERCHANGEABLE
Gearcase-Motor
Grimes Aerospace Company
5310-00-917-4145 INTERCHANGEABLE
Nut,teletype
4730-01-012-994350309 INTERCHANGEABLE
Coupling Half,quick Disconnect
Parker-Hannifin Corporation Div Stratoflex Products Division Coupling Business Unit
4730-01-121-894950309 INTERCHANGEABLE
Housing,female
Aar Allen Services, Inc Dba Aar Component Services Wellington
4010-01-658-578950309 INTERCHANGEABLE
Rope,wire
Amera Trail Inc
Cross-Reference Index
Part NumberManufacturer
50309 PRIMARY Mission Systems Davenport Inc. (USA)
60961 PRIMARY Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems (USA)
Related Parts
5950-00-083-8993INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
BE00326-001
3020-00-231-8710INTERCHANGEABLE
LINK,ROLLER CHAIN
5330-00-291-1626INTERCHANGEABLE
SEAL,PLAIN ENCASED
43-1156
3010-00-336-6421INTERCHANGEABLE
CLUTCH,POSITIVE,NONVEHICULAR
60961
3010-00-512-0590INTERCHANGEABLE
GEARCASE-MOTOR
D-7330-1
5310-00-917-4145INTERCHANGEABLE
NUT,TELETYPE
4730-01-012-9943INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
50309
4730-01-121-8949INTERCHANGEABLE
HOUSING,FEMALE
50309
4010-01-658-5789INTERCHANGEABLE
ROPE,WIRE
50309

Frequently Asked Questions

What is NSN 4820-01-074-8379?

NSN 4820-01-074-8379 is a Valve,pilot Float Operated, manufactured by Mission Systems Davenport Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-074-8379?

NSN 4820-01-074-8379 has 2 cross-referenced part numbers: 50309 (Mission Systems Davenport Inc.), 60961 (Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems).

What NSN replaces 4820-01-074-8379?

There are 9 known substitutes for 4820-01-074-8379: 5950-00-083-8993, 3020-00-231-8710, 5330-00-291-1626 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50309?

Key specifications for 50309: General Characteristics Item Description: O/A DIM. 2.62 IN. W BY 3.31 IN. H BY 4.08 IN. LG IN. 1 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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