PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-3524-080Diaphragm,valve,flat

Cooper Machinery Services Llc · NSN 4820-00-148-5511 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-148-5511 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-148-5511. Primary manufacturer part number: B-3524-080.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Style Designator: FLAT
  • Material: RUBBER
  • Outside Diameter: 3.000 INCHES NOMINAL IN
  • Outside Corner Radius: 0.112 INCHES NOMINAL IN
  • Bolt Circle Diameter: 2.678 INCHES NOMINAL IN
  • Bolt Hole Quantity: 6
  • Hole Diameter: 0.284 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-148-5511, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 5 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
NSN4820-00-148-5511
Primary Part NumberB-3524-080
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCooper Machinery Services Llc
StatusCANCELLED
Style DesignatorFLAT
MaterialRUBBER
Outside Diameter3.000 INCHES NOMINAL IN
Outside Corner Radius0.112 INCHES NOMINAL IN
Bolt Circle Diameter2.678 INCHES NOMINAL IN
Bolt Hole Quantity6
Hole Diameter0.284 INCHES NOMINAL IN
Material Thickness0.090 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-115-37201-355 INTERCHANGEABLE
Disk,valve
G. a. Braun, Inc.
2590-00-247-66451355 INTERCHANGEABLE
Cartridge,air Valve
Williams Controls Inc
5310-00-543-2410MS35338-40 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5940-00-552-51021073 INTERCHANGEABLE
Terminal Board
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5330-00-599-9632470181 INTERCHANGEABLE
Retainer,packing
Naval Sea Systems Command
6650-00-833-4002 INTERCHANGEABLE
Magnifier
6680-01-023-5094 INTERCHANGEABLE
Meter,flow Rate Indicating
5342-01-139-2995 INTERCHANGEABLE
Feet,rubber
6680-01-145-67631255EA2EAAA1B INTERCHANGEABLE
Meter,flow Rate Indicating
Brooks Instrument Llc
6680-01-145-67641355EA2AGAA1B INTERCHANGEABLE
Meter,flow Rate Indicating
Brooks Instrument Llc
Cross-Reference Index
Part NumberManufacturer
B-3524-080 PRIMARY Cooper Machinery Services Llc (USA)
BM2449B10 Cooper Cameron Corp Ajax-Superior Div (USA)
RC320-9-1625PC1855 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
B3524-80 Cooper Machinery Services Llc (USA)
RC340-16-1687PC1855 Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
RC320-9-1622PC1820 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
RC330-12-1694PC1855 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
1855 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
RC230-14-1650PC1855 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
BM2449B10 Cooper Machinery Services Llc (USA)
RC244-16-1617PC1855 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
4SC1022 Striegel Supply, Inc. Dba Striegel Supply Inc (USA)
RC320-9-1623PC1855 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
1855 Stewart-Warner Alemite Corp (USA)
1355 Cooper Machinery Services Llc (USA)
1355 Cooper Cameron Corp Ajax-Superior Div (USA)
Related Parts
4820-00-115-3720INTERCHANGEABLE
DISK,VALVE
1-355
2590-00-247-6645INTERCHANGEABLE
CARTRIDGE,AIR VALVE
1355
5310-00-543-2410INTERCHANGEABLE
WASHER,LOCK
MS35338-40
5940-00-552-5102INTERCHANGEABLE
TERMINAL BOARD
1073
5330-00-599-9632INTERCHANGEABLE
RETAINER,PACKING
470181
6650-00-833-4002INTERCHANGEABLE
MAGNIFIER
6680-01-023-5094INTERCHANGEABLE
METER,FLOW RATE INDICATING
5342-01-139-2995INTERCHANGEABLE
FEET,RUBBER
6680-01-145-6763INTERCHANGEABLE
METER,FLOW RATE INDICATING
1255EA2EAAA1B
6680-01-145-6764INTERCHANGEABLE
METER,FLOW RATE INDICATING
1355EA2AGAA1B
5315-01-180-5270INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
330207 ITEM 6
4030-01-208-3744INTERCHANGEABLE
SOCKET,WIRE ROPE
9-053-100007

Frequently Asked Questions

What is NSN 4820-00-148-5511?

NSN 4820-00-148-5511 is a Diaphragm,valve,flat, manufactured by Cooper Machinery Services Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-148-5511?

NSN 4820-00-148-5511 has 16 cross-referenced part numbers: B-3524-080 (Cooper Machinery Services Llc), BM2449B10 (Cooper Cameron Corp Ajax-Superior Div), RC320-9-1625PC1855 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor), B3524-80 (Cooper Machinery Services Llc), RC340-16-1687PC1855 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor) and 11 more.

What NSN replaces 4820-00-148-5511?

There are 12 known substitutes for 4820-00-148-5511: 4820-00-115-3720, 2590-00-247-6645, 5310-00-543-2410 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-3524-080?

Key specifications for B-3524-080: Style Designator: FLAT; Material: RUBBER; End Item Identification: LOGISTICS SUPPORT VESSEL; Special Features: ADDITIONAL MATERIAL: FIBER. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-148-5511 still in active supply?

NSN 4820-00-148-5511 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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