PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7BU-2003Disk,valve

Velan Valve Corp. · NSN 4820-01-200-2604 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-200-2604 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-200-2604. Primary manufacturer part number: 7BU-2003.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL COMP 416
  • Shank Diameter: 1.368 INCHES NOMINAL IN
  • Flange Diameter: 1.375 INCHES NOMINAL IN
  • Style Designator: POPPET
  • Material Document and Classification: AISI 416 ASSN STD SINGLE MATERIAL RESPONSE
  • 3 verified cross-references
  • Primary manufacturer: Velan Valve Corp.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 416 construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-200-2604, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Velan Valve Corp.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-200-2604
Primary Part Number7BU-2003
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusACTIVE
MaterialSTEEL COMP 416
Shank Diameter1.368 INCHES NOMINAL IN
Flange Diameter1.375 INCHES NOMINAL IN
Style DesignatorPOPPET
Material Document and ClassificationAISI 416 ASSN STD SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5945-00-258-352733-3-10 INTERCHANGEABLE
Relay,electromagnetic
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
3110-00-293-8468PS33310 INTERCHANGEABLE
Bearing,ball,annular
Honeywell International Inc. Div Aerospace - Torrance
5999-00-817-512733-310 INTERCHANGEABLE
Clip,electrical
Gc/waldom Inc
5940-01-067-6385410-GP-Y-10 INTERCHANGEABLE
Terminal Board
Regal Beloit America, Inc
5305-01-083-534012265522 INTERCHANGEABLE
Screw,cap,socket Head
U S Army Tank Automotive Command Amsta-Im-Mm
4820-01-160-58443BV-A2001 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-195-443733310 PIECE 24 I/2IN INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-200-23907BV-2502 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-202-85774-BV-2502 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-204-801733310 PIECE 3 TO 6 REV J 1/4IN INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
Cross-Reference Index
Part NumberManufacturer
33310-3 PIECE 22 Velan Valve Corp. (USA)
7BU-2003 PRIMARY Velan Valve Corp. (USA)
33310 Velan Valve Corp. (USA)
Related Parts
5945-00-258-3527INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
33-3-10
3110-00-293-8468INTERCHANGEABLE
BEARING,BALL,ANNULAR
PS33310
5999-00-817-5127INTERCHANGEABLE
CLIP,ELECTRICAL
33-310
5940-01-067-6385INTERCHANGEABLE
TERMINAL BOARD
410-GP-Y-10
5305-01-083-5340INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12265522
4820-01-160-5844INTERCHANGEABLE
STEM,FLUID VALVE
3BV-A2001
4820-01-195-4437INTERCHANGEABLE
STEM,FLUID VALVE
33310 PIECE 24 I/2IN
4820-01-200-2390INTERCHANGEABLE
STEM,FLUID VALVE
7BV-2502
4820-01-202-8577INTERCHANGEABLE
STEM,FLUID VALVE
4-BV-2502
4820-01-204-8017INTERCHANGEABLE
STEM,FLUID VALVE
33310 PIECE 3 TO 6 REV J 1/4IN
4820-01-227-1250INTERCHANGEABLE
DISK,VALVE
RP00-255-419-S
4820-01-391-0891INTERCHANGEABLE
FLANGE,GLAND,VALVE
16771-3

Frequently Asked Questions

What is NSN 4820-01-200-2604?

NSN 4820-01-200-2604 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-200-2604?

NSN 4820-01-200-2604 has 3 cross-referenced part numbers: 33310-3 PIECE 22 (Velan Valve Corp.), 7BU-2003 (Velan Valve Corp.), 33310 (Velan Valve Corp.).

What NSN replaces 4820-01-200-2604?

There are 12 known substitutes for 4820-01-200-2604: 5945-00-258-3527, 3110-00-293-8468, 5999-00-817-5127 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7BU-2003?

Key specifications for 7BU-2003: Material: STEEL COMP 416; Overall Height: 0.875 INCHES NOMINAL IN; Shank Diameter: 1.368 INCHES NOMINAL IN; Flange Diameter: 1.375 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com