PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0520915Diaphragm,actuator Valve,special

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 4820-00-136-2077 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-136-2077 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-136-2077. Primary manufacturer part number: 0520915.
Features
  • Diaphragm,actuator Valve,special — FSC 4820
  • Material: RUBBER SYNTHETIC
  • Material Thickness: 0.155 INCHES NOMINAL IN
  • Style Designator: SPECIAL SHAPED
  • Outside Diameter: 4.000 INCHES NOMINAL IN
  • Bead Diameter: 3.000 INCHES NOMINAL IN
  • Center Hole Diameter: 0.750 INCHES NOMINAL IN
  • 11 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic construction
General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-00-136-2077, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 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
NSN4820-00-136-2077
Primary Part Number0520915
Item NameDiaphragm,actuator Valve,special
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusCANCELLED
MaterialRUBBER SYNTHETIC
Material Thickness0.155 INCHES NOMINAL IN
Style DesignatorSPECIAL SHAPED
Outside Diameter4.000 INCHES NOMINAL IN
Bead Diameter3.000 INCHES NOMINAL IN
Center Hole Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-241-051193513 INTERCHANGEABLE
Nut,imp
Cooper Machinery Services Llc
5962-00-243-2496UA749DHC INTERCHANGEABLE
Microcircuit,linear
Fairchild Semiconductor Corp
5985-00-337-37179351-3 INTERCHANGEABLE
Attenuator,fixed
Spectrum Control Inc Div Weinschel
6620-00-355-1734 INTERCHANGEABLE
Gage Unit,instrumen
5342-00-537-7655SMB314936 INTERCHANGEABLE
Mount,resilient,weapon System
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6105-00-942-7817FPE49-188-1 INTERCHANGEABLE
Motor-Tachometer Generator
Kearfott Corp Div Kearfott Corporation
3020-01-026-3215 INTERCHANGEABLE
Chain Assembly,rotary
4730-01-092-0342 INTERCHANGEABLE
Parts Kit,steam Trap
6150-01-324-4534935-19 INTERCHANGEABLE
Cable Assembly,special Purpose,e
R. D. Miners, Inc Dba Ray Burner Co
5325-01-338-029193513 INTERCHANGEABLE
Ring,retaining
Ke Marine Inc Dba Ke Marine Inc
Cross-Reference Index
Part NumberManufacturer
Y1067A2PC7 Bosch Rexroth Corporation Div Bosch Rexroth (USA)
9351-003 Rosemount Analytical, Inc. Div Process Analytical Division (USA)
9351-3 Rosemount Analytical, Inc. Div Process Analytical Division (USA)
9351-9 Rosemount Analytical, Inc. Div Process Analytical Division (USA)
520915 Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
0520915 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
N554368PC11 Rosemount Analytical, Inc. Div Process Analytical Division (USA)
N554368PC11 Calgon Corp (USA)
19-8-2038 Ecolaire Inc Baldwin-Hamilton Co Div (USA)
5209=5 Bosch Rexroth Corporation Div Bosch Rexroth (USA)
Y1067C2PC7 Bosch Rexroth Corporation Div Bosch Rexroth (USA)
Related Parts
5310-00-241-0511INTERCHANGEABLE
NUT,IMP
93513
5962-00-243-2496INTERCHANGEABLE
MICROCIRCUIT,LINEAR
UA749DHC
5985-00-337-3717INTERCHANGEABLE
ATTENUATOR,FIXED
9351-3
6620-00-355-1734INTERCHANGEABLE
GAGE UNIT,INSTRUMEN
5342-00-537-7655INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
SMB314936
6105-00-942-7817INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
FPE49-188-1
3020-01-026-3215INTERCHANGEABLE
CHAIN ASSEMBLY,ROTARY
4730-01-092-0342INTERCHANGEABLE
PARTS KIT,STEAM TRAP
6150-01-324-4534INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
935-19
5325-01-338-0291INTERCHANGEABLE
RING,RETAINING
93513
5340-01-340-7946INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
5305-01-583-0339INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
93513

Frequently Asked Questions

What is NSN 4820-00-136-2077?

NSN 4820-00-136-2077 is a Diaphragm,actuator Valve,special, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-136-2077?

NSN 4820-00-136-2077 has 11 cross-referenced part numbers: Y1067A2PC7 (Bosch Rexroth Corporation Div Bosch Rexroth), 9351-003 (Rosemount Analytical, Inc. Div Process Analytical Division), 9351-3 (Rosemount Analytical, Inc. Div Process Analytical Division), 9351-9 (Rosemount Analytical, Inc. Div Process Analytical Division), 520915 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp) and 6 more.

What NSN replaces 4820-00-136-2077?

There are 12 known substitutes for 4820-00-136-2077: 5310-00-241-0511, 5962-00-243-2496, 5985-00-337-3717 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0520915?

Key specifications for 0520915: Material: RUBBER SYNTHETIC; Material Thickness: 0.155 INCHES NOMINAL IN; Style Designator: SPECIAL SHAPED; Outside Diameter: 4.000 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-136-2077 still in active supply?

NSN 4820-00-136-2077 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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