PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2039Diaphragm,valve,flat

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 4820-00-925-4546 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-925-4546 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-925-4546. Primary manufacturer part number: 2039.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material: STEEL
  • 1 verified cross-reference
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-925-4546, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN4820-00-925-4546
Primary Part Number2039
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusACTIVE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-388-12192039 INTERCHANGEABLE
Packing Assembly
Northrop Grumman Systems Corporation Div Marine Systems
4310-00-467-9915 INTERCHANGEABLE
Shell,cylinder
6625-00-806-1575 INTERCHANGEABLE
Test Set Subassembly,electrical
5920-00-834-7834N0S3 INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
5930-00-860-81502039 INTERCHANGEABLE
Switch,rotary
Janco Corporation Dba Janco Corp Div Mason Controls
5935-00-902-73902039 INTERCHANGEABLE
Connector,receptacle,electrical
Sv Microwave, Inc. Div Sv Microwave
5935-00-914-2468 INTERCHANGEABLE
Adapter,connector
5331-01-091-0757MS28775-039 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5945-01-132-42072039 INTERCHANGEABLE
Relay,electromagnetic
Hose-Mccann Telephone Co, Inc
2940-01-223-066042039 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
Cross-Reference Index
Part NumberManufacturer
2039 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Related Parts
5330-00-388-1219INTERCHANGEABLE
PACKING ASSEMBLY
2039
4310-00-467-9915INTERCHANGEABLE
SHELL,CYLINDER
6625-00-806-1575INTERCHANGEABLE
TEST SET SUBASSEMBLY,ELECTRICAL
5920-00-834-7834INTERCHANGEABLE
FUSE,CARTRIDGE
N0S3
5930-00-860-8150INTERCHANGEABLE
SWITCH,ROTARY
2039
5935-00-902-7390INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2039
5935-00-914-2468INTERCHANGEABLE
ADAPTER,CONNECTOR
5331-01-091-0757INTERCHANGEABLE
O-RING
MS28775-039
5945-01-132-4207INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2039
2940-01-223-0660INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42039
5360-01-339-0704INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6060-01-372-7070INTERCHANGEABLE
ADAPTER,CONNECTOR,FIBER OPTIC

Frequently Asked Questions

What is NSN 4820-00-925-4546?

NSN 4820-00-925-4546 is a Diaphragm,valve,flat, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-925-4546?

NSN 4820-00-925-4546 has 1 cross-referenced part number: 2039 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp).

What NSN replaces 4820-00-925-4546?

There are 12 known substitutes for 4820-00-925-4546: 5330-00-388-1219, 4310-00-467-9915, 6625-00-806-1575 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2039?

Key specifications for 2039: Material: STEEL. 1 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