PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9802Valve,check

Mission Systems Orchard Park Inc · NSN 4820-00-529-3198 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-529-3198 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-529-3198. Primary manufacturer part number: 9802.
Features
  • Valve,check — FSC 4820
  • Test Data Document: 81349-MIL-V-7908 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.).
  • Seat Angle: 37.0 DEGREES FIRST END
  • Thread Class: 3A FIRST END A
  • Mounting Position: HORIZONTAL OR VERTICAL
  • Flow Control Device: BALL
  • Maximum Operating Temp: 65.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Connection Style: FLARED (TUBE) FIRST END
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-00-529-3198, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-529-3198
Primary Part Number9802
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusCANCELLED
Test Data Document81349-MIL-V-7908 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.).
Seat Angle37.0 DEGREES FIRST END
Thread Class3A FIRST END A
Mounting PositionHORIZONTAL OR VERTICAL
Flow Control DeviceBALL
Maximum Operating Temp65.0 FAHRENHEIT SINGLE RESPONSE DEGF
Connection StyleFLARED (TUBE) FIRST END
Thread Series DesignatorUNF FIRST END
Nondefinitive Spec/std DataD STYLE
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Operating Pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread DirectionRIGHT-HAND FIRST END
Thread Quantity Per Inch20 FIRST END
Nominal Thread Size0.500 INCHES FIRST END IN
Media for Which DesignedOXYGEN, GASEOUS SINGLE RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4330-00-068-8187348-3 INTERCHANGEABLE
Filter Element,fluid
Collins Engine Nozzles, Inc
9540-00-251-1906 INTERCHANGEABLE
Angle,structural
4820-00-274-36369802 INTERCHANGEABLE
Cock,plug
A Y Mcdonald Mfg Co
5998-00-324-0550 INTERCHANGEABLE
Extender Card,electronic Test
5930-00-434-91214D1259 INTERCHANGEABLE
Switch,rotary
Caterpillar Inc Div Caterpillar Defense
4820-00-469-03584390 INTERCHANGEABLE
Valve,check
Derbyshire Machine & Tool Co
4130-00-472-8655121939-1 INTERCHANGEABLE
Filter Element,air Conditioning
Falls Filtration Technologies, Inc.
4820-00-528-2356 INTERCHANGEABLE
Valve,check
4820-00-528-2358 INTERCHANGEABLE
Valve,check
4820-00-528-2359 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
9802 PRIMARY Mission Systems Orchard Park Inc (USA)
AN6033-1 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
43A9030 Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc (USA)
43A9030 Army Air Force Drawings Under Custodianship of the Air Force
MIL-PRF-7908 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
43A9030 Department of the Air Force (USA)
8148650 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
MS21211 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
2289M Scovill Inc Schrader Bellows Div (USA)
MS21211-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
2289 Scovill Inc Schrader Bellows Div (USA)
9802 PRIMARY Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
4390 PRIMARY Fluid Power, Inc. (USA)
Related Parts
4330-00-068-8187INTERCHANGEABLE
FILTER ELEMENT,FLUID
348-3
9540-00-251-1906INTERCHANGEABLE
ANGLE,STRUCTURAL
4820-00-274-3636INTERCHANGEABLE
COCK,PLUG
9802
5998-00-324-0550INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
5930-00-434-9121INTERCHANGEABLE
SWITCH,ROTARY
4D1259
4820-00-469-0358INTERCHANGEABLE
VALVE,CHECK
4390
4130-00-472-8655INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
121939-1
4820-00-528-2356INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2358INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2359INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2360INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2363INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 4820-00-529-3198?

NSN 4820-00-529-3198 is a Valve,check, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-529-3198?

NSN 4820-00-529-3198 has 13 cross-referenced part numbers: 9802 (Mission Systems Orchard Park Inc), AN6033-1 (Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group), 43A9030 (Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc), 43A9030 (Army Air Force Drawings Under Custodianship of the Air Force), MIL-PRF-7908 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 8 more.

What NSN replaces 4820-00-529-3198?

There are 12 known substitutes for 4820-00-529-3198: 4330-00-068-8187, 9540-00-251-1906, 4820-00-274-3636 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9802?

Key specifications for 9802: Test Data Document: 81349-MIL-V-7908 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.).; Seat Angle: 37.0 DEGREES FIRST END; Special Features: THIRD END MS33656 FOR 5/16 IN. OD TUBING; OXYGEN CLEANING REQUIRED PER AIR FORCE DRAWING OR EQUIVALENT SPEC. IN; Thread Class: 3A FIRST END A. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-529-3198 still in active supply?

NSN 4820-00-529-3198 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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