PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D3-25Diaphragm,valve,flat

Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div · NSN 4820-00-075-7482 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-075-7482 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-075-7482. Primary manufacturer part number: D3-25.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Outside Diameter: 3.420 INCHES NOMINAL IN
  • Material: COPPER ALLOY 510
  • Style Designator: FLAT
  • Material Thickness: 0.008 INCHES NOMINAL IN
  • 6 verified cross-references
  • Primary manufacturer: Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 510 construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-075-7482, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-075-7482
Primary Part NumberD3-25
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div
StatusCANCELLED
Outside Diameter3.420 INCHES NOMINAL IN
MaterialCOPPER ALLOY 510
Style DesignatorFLAT
Material Thickness0.008 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5961-00-827-2059GD394 INTERCHANGEABLE
Semiconductor Device,diode
General Semiconductor Inc
4320-01-671-547832515-1 INTERCHANGEABLE
Piston,pump
Hydraulics International, Inc. Dba Hydraulics International Inc
Cross-Reference Index
Part NumberManufacturer
D3-25 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
00003-025-151A0000 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
000-003-025-151 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
11-12 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
3-25-151 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
000003-025-151 Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div (USA)
Related Parts
5961-00-827-2059INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
GD394
4320-01-671-5478INTERCHANGEABLE
PISTON,PUMP
32515-1

Frequently Asked Questions

What is NSN 4820-00-075-7482?

NSN 4820-00-075-7482 is a Diaphragm,valve,flat, manufactured by Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-075-7482?

NSN 4820-00-075-7482 has 6 cross-referenced part numbers: D3-25 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div), 00003-025-151A0000 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div), 000-003-025-151 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div), 11-12 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div), 3-25-151 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div) and 1 more.

What NSN replaces 4820-00-075-7482?

There are 2 known substitutes for 4820-00-075-7482: 5961-00-827-2059, 4320-01-671-5478. Verify interchangeability with system specifications before substitution.

What are the specifications of D3-25?

Key specifications for D3-25: Outside Diameter: 3.420 INCHES NOMINAL IN; Material: COPPER ALLOY 510; Style Designator: FLAT; Material Thickness: 0.008 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-075-7482 still in active supply?

NSN 4820-00-075-7482 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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