PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8126X2Disk,valve

Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris · NSN 4820-01-121-6568 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-121-6568 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-121-6568. Primary manufacturer part number: 8126X2.
Features
  • Disk,valve — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-121-6568, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDisk,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersParker Hannifin Corporation Div Aerospace Group Headquarters (CAGE 92003); Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (CAGE 72352)
Technical Specifications
ParameterValue
NSN4820-01-121-6568
Primary Part Number8126X2
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCurtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-01-121-30912938 INTERCHANGEABLE
Gasket,cap
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
4820-01-248-501818049X4 INTERCHANGEABLE
Ring,valve Blowdown
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Cross-Reference Index
Part NumberManufacturer
7804015-6 Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
18251-F-SP-1 IT Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA)
8126X2 PRIMARY Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA)
Related Parts
5330-01-121-3091INTERCHANGEABLE
GASKET,CAP
2938
4820-01-248-5018INTERCHANGEABLE
RING,VALVE BLOWDOWN
18049X4

Frequently Asked Questions

What is NSN 4820-01-121-6568?

NSN 4820-01-121-6568 is a Disk,valve, manufactured by Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-121-6568?

NSN 4820-01-121-6568 has 3 cross-referenced part numbers: 7804015-6 (Parker Hannifin Corporation Div Aerospace Group Headquarters), 18251-F-SP-1 IT (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris), 8126X2 (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris).

What NSN replaces 4820-01-121-6568?

There are 2 known substitutes for 4820-01-121-6568: 5330-01-121-3091, 4820-01-248-5018. Verify interchangeability with system specifications before substitution.

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