PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21147-1001-1Piston,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-514-8491 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-514-8491 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-514-8491. Primary manufacturer part number: 21147-1001-1.
Features
  • Piston,valve — FSC 4820
  • Valve Design Control Activity: 78062
  • Material: STEEL COMP 416
  • Material Document and Classification: ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE
  • Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR
  • 3 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 416 construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-514-8491, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 4 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-514-8491
Primary Part Number21147-1001-1
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Valve Design Control Activity78062
MaterialSTEEL COMP 416
Material Document and ClassificationASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE
Valve Type for Which DesignedDIRECTIONAL CONTROL LINEAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4320-00-063-747123072 INTERCHANGEABLE
Impeller,pump,centrifugal
Industrial Technologies and Services Llc
1650-00-118-4152211-47 INTERCHANGEABLE
Cap,pump
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5315-00-128-118621147 INTERCHANGEABLE
Pin,advance
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
2920-00-142-8622 INTERCHANGEABLE
Rotor,ignition Distributor
5905-00-374-8083412120 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Stewart-Warner Corporation
4820-00-898-2157211-47 INTERCHANGEABLE
Valve Assembly
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
5962-01-021-2415SN74147N INTERCHANGEABLE
Microcircuit,digital
Texas Instruments Incorporated
4320-01-303-387821147 INTERCHANGEABLE
Housing,liquid Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
4730-01-707-211621-147 INTERCHANGEABLE
Nipple,pipe
Copp Industrial Manufacturing, Inc. Dba Copp Industrial Manufacturing
Cross-Reference Index
Part NumberManufacturer
21147-001 FIND NO. 12 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21147-1001-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21147 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
4320-00-063-7471INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
23072
1650-00-118-4152INTERCHANGEABLE
CAP,PUMP
211-47
5315-00-128-1186INTERCHANGEABLE
PIN,ADVANCE
21147
2920-00-142-8622INTERCHANGEABLE
ROTOR,IGNITION DISTRIBUTOR
5905-00-374-8083INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
412120
4820-00-898-2157INTERCHANGEABLE
VALVE ASSEMBLY
211-47
5962-01-021-2415INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SN74147N
4320-01-303-3878INTERCHANGEABLE
HOUSING,LIQUID PUMP
21147
4730-01-707-2116INTERCHANGEABLE
NIPPLE,PIPE
21-147

Frequently Asked Questions

What is NSN 4820-01-514-8491?

NSN 4820-01-514-8491 is a Piston,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-514-8491?

NSN 4820-01-514-8491 has 3 cross-referenced part numbers: 21147-001 FIND NO. 12 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21147-1001-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21147 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-514-8491?

There are 9 known substitutes for 4820-01-514-8491: 4320-00-063-7471, 1650-00-118-4152, 5315-00-128-1186 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21147-1001-1?

Key specifications for 21147-1001-1: Valve Design Control Activity: 78062; Material: STEEL COMP 416; Material Document and Classification: ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE; Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR. 6 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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