PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

59501Seat,valve

Parker-Hannifin Corporation Dba Control Systems Division · NSN 4820-00-870-0049 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-870-0049 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-870-0049. Primary manufacturer part number: 59501.
Features
  • Seat,valve — FSC 4820
  • FSC Application Data: AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS
  • 1 verified cross-reference
  • Primary manufacturer: Parker-Hannifin Corporation Dba Control Systems Division
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-870-0049, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Control Systems Division. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN4820-00-870-0049
Primary Part Number59501
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Control Systems Division
StatusACTIVE
FSC Application DataAIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4330-00-218-5997595-01 INTERCHANGEABLE
Pack Assembly
Purolator Facet Inc. Div Parker Aerospace Filtration Division Dba Purolator Facet, in
6150-01-079-2129 INTERCHANGEABLE
Cable Assembly,special Purpose,e
5999-01-297-081059501 INTERCHANGEABLE
Shielding Gasket,electronic
Orbit International Corp. Div Orbit Instrument
Cross-Reference Index
Part NumberManufacturer
59501 PRIMARY Parker-Hannifin Corporation Dba Control Systems Division (USA)
Related Parts
4330-00-218-5997INTERCHANGEABLE
PACK ASSEMBLY
595-01
6150-01-079-2129INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
5999-01-297-0810INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
59501

Frequently Asked Questions

What is NSN 4820-00-870-0049?

NSN 4820-00-870-0049 is a Seat,valve, manufactured by Parker-Hannifin Corporation Dba Control Systems Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-870-0049?

NSN 4820-00-870-0049 has 1 cross-referenced part number: 59501 (Parker-Hannifin Corporation Dba Control Systems Division).

What NSN replaces 4820-00-870-0049?

There are 3 known substitutes for 4820-00-870-0049: 4330-00-218-5997, 6150-01-079-2129, 5999-01-297-0810. Verify interchangeability with system specifications before substitution.

What are the specifications of 59501?

Key specifications for 59501: FSC Application Data: AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS. 1 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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