PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA-6140Valve,check

Kovatch Corp. · NSN 4820-01-132-8366 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-132-8366 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-132-8366. Primary manufacturer part number: AA-6140.
Features
  • Valve,check — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Kovatch Corp.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-132-8366, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Kovatch Corp.. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,check
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersPhiladelphia Valve Co (CAGE 77254); Kovatch Corp. (CAGE 59556)
Technical Specifications
ParameterValue
NSN4820-01-132-8366
Primary Part NumberAA-6140
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerKovatch Corp.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-202-4445 INTERCHANGEABLE
Gasket
5305-00-282-43456141 INTERCHANGEABLE
Screw,machine
Triumph Engine Control Systems Llc
5940-00-283-3477 INTERCHANGEABLE
Terminal Board
5960-00-284-65549003705 INTERCHANGEABLE
Electron Tube
Us Army Aviation and Missile Command
5330-00-498-29132W4037 INTERCHANGEABLE
Seal,plain Encased
Caterpillar Inc Div Caterpillar Defense
5940-00-751-96706102 INTERCHANGEABLE
Terminal,stud
Te Connectivity Corporation Dba Microdot Products
5940-00-752-03727520372 INTERCHANGEABLE
Terminal Board
U S Army Tank Automotive Command Amsta-Im-Mm
6675-00-802-9750DT740 INTERCHANGEABLE
Transit
Sokkia Corporation Dba Foreign Parent Is Sokkia Co Ltd Atsugi Japan
5940-00-983-6084 INTERCHANGEABLE
Terminal Board
6520-01-056-7375 INTERCHANGEABLE
Brush,bristle,dental Handpiece
Cross-Reference Index
Part NumberManufacturer
6141 Philadelphia Valve Co (USA)
AA-6140 PRIMARY Kovatch Corp. (USA)
AA-6140 Philadelphia Valve Co (USA)
Related Parts
5330-00-202-4445INTERCHANGEABLE
GASKET
5305-00-282-4345INTERCHANGEABLE
SCREW,MACHINE
6141
5940-00-283-3477INTERCHANGEABLE
TERMINAL BOARD
5960-00-284-6554INTERCHANGEABLE
ELECTRON TUBE
9003705
5330-00-498-2913INTERCHANGEABLE
SEAL,PLAIN ENCASED
2W4037
5940-00-751-9670INTERCHANGEABLE
TERMINAL,STUD
6102
5940-00-752-0372INTERCHANGEABLE
TERMINAL BOARD
7520372
6675-00-802-9750INTERCHANGEABLE
TRANSIT
DT740
5940-00-983-6084INTERCHANGEABLE
TERMINAL BOARD
6520-01-056-7375INTERCHANGEABLE
BRUSH,BRISTLE,DENTAL HANDPIECE
6625-01-096-8456INTERCHANGEABLE
CALIBRATOR,VOLTAGE
6141
5640-01-310-3663INTERCHANGEABLE
INSULATION SLEEVING,THERMAL

Frequently Asked Questions

What is NSN 4820-01-132-8366?

NSN 4820-01-132-8366 is a Valve,check, manufactured by Kovatch Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-132-8366?

NSN 4820-01-132-8366 has 3 cross-referenced part numbers: 6141 (Philadelphia Valve Co), AA-6140 (Kovatch Corp.), AA-6140 (Philadelphia Valve Co).

What NSN replaces 4820-01-132-8366?

There are 12 known substitutes for 4820-01-132-8366: 5330-00-202-4445, 5305-00-282-4345, 5940-00-283-3477 and 9 more. Verify interchangeability with system specifications before substitution.

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