PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66772Disk,valve

William Powell Company, the Dba Powell Valve Div the Starflo Corporation · NSN 4820-01-139-4153 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-139-4153 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-139-4153. Primary manufacturer part number: 66772.
Features
  • Disk,valve — FSC 4820
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • Criticality Code Justification: ZZZY
  • 3 verified cross-references
  • Primary manufacturer: William Powell Company, the Dba Powell Valve Div the Starflo Corporation
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-139-4153, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 2 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-139-4153
Primary Part Number66772
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam Powell Company, the Dba Powell Valve Div the Starflo Corporation
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1650-00-176-135466772 INTERCHANGEABLE
Piston,hydraulic Motor-Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
5360-00-499-3809969-433 INTERCHANGEABLE
Spring,helical,compression
Eaton Corp Opns & Technical Center
2930-01-087-4564 INTERCHANGEABLE
Cooler,engine Oil
Cross-Reference Index
Part NumberManufacturer
66772 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
055715-E-CS-2.5IN-PC22 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
055715 ITEM 22 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Related Parts
1650-00-176-1354INTERCHANGEABLE
PISTON,HYDRAULIC MOTOR-PUMP
66772
5360-00-499-3809INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
969-433
2930-01-087-4564INTERCHANGEABLE
COOLER,ENGINE OIL

Frequently Asked Questions

What is NSN 4820-01-139-4153?

NSN 4820-01-139-4153 is a Disk,valve, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-139-4153?

NSN 4820-01-139-4153 has 3 cross-referenced part numbers: 66772 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 055715-E-CS-2.5IN-PC22 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 055715 ITEM 22 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).

What NSN replaces 4820-01-139-4153?

There are 3 known substitutes for 4820-01-139-4153: 1650-00-176-1354, 5360-00-499-3809, 2930-01-087-4564. Verify interchangeability with system specifications before substitution.

What are the specifications of 66772?

Key specifications for 66772: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.; Criticality Code Justification: ZZZY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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