PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILV5027Valve,check

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4820-00-529-3195 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-529-3195 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-529-3195. Primary manufacturer part number: MILV5027.
Features
  • Valve,check — FSC 4820
  • Thread Series Designator: UNF FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.188 INCHES FIRST END IN
  • Media for Which Designed: OXYGEN, GASEOUS SINGLE RESPONSE
  • Nominal Thread Size: 0.375 INCHES FIRST END IN
  • Connection Style: SWIVEL NUT, DOUBLE COMPRESSION (TUBE) FIRST END
  • Thread Direction: RIGHT-HAND FIRST END
  • Flow Control Device: CONE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-00-529-3195, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-529-3195
Primary Part NumberMILV5027
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread Series DesignatorUNF FIRST END
Nominal Outside Diameter Tube Accommodated0.188 INCHES FIRST END IN
Media for Which DesignedOXYGEN, GASEOUS SINGLE RESPONSE
Nominal Thread Size0.375 INCHES FIRST END IN
Connection StyleSWIVEL NUT, DOUBLE COMPRESSION (TUBE) FIRST END
Thread DirectionRIGHT-HAND FIRST END
Flow Control DeviceCONE
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Quantity Per Inch24 FIRST END
Mounting PositionHORIZONTAL
Thread Class3A FIRST END A
Seat Angle45.0 DEGREES FIRST END
Operating Pressure1800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nondefinitive Spec/std Data1 TYPE AND B STYLE
Test Data Document81349-MIL-V-5027 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Style DesignatorSTRAIGHT THRU
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-457-6287 INTERCHANGEABLE
Valve,check
4820-00-529-3197 INTERCHANGEABLE
Valve,check
1660-00-960-4493 INTERCHANGEABLE
Filler Valve,aircraft Oxygen
Cross-Reference Index
Part NumberManufacturer
MILV5027 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN6015-2 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
4820-00-457-6287INTERCHANGEABLE
VALVE,CHECK
4820-00-529-3197INTERCHANGEABLE
VALVE,CHECK
1660-00-960-4493INTERCHANGEABLE
FILLER VALVE,AIRCRAFT OXYGEN

Frequently Asked Questions

What is NSN 4820-00-529-3195?

NSN 4820-00-529-3195 is a Valve,check, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-529-3195?

NSN 4820-00-529-3195 has 2 cross-referenced part numbers: MILV5027 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AN6015-2 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 4820-00-529-3195?

There are 3 known substitutes for 4820-00-529-3195: 4820-00-457-6287, 4820-00-529-3197, 1660-00-960-4493. Verify interchangeability with system specifications before substitution.

What are the specifications of MILV5027?

Key specifications for MILV5027: Thread Series Designator: UNF FIRST END; Nominal Outside Diameter Tube Accommodated: 0.188 INCHES FIRST END IN; Media for Which Designed: OXYGEN, GASEOUS SINGLE RESPONSE; Nominal Thread Size: 0.375 INCHES FIRST END IN. 16 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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