PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-784-4Disk,valve

Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division · NSN 4820-01-261-9844 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-261-9844 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-261-9844. Primary manufacturer part number: 3-784-4.
Features
  • Disk,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-261-9844, 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 Pneutronics Div Hydraulic Valve Division. This item has 4 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 Dba Pneutronics Div Hydraulic Valve Division (CAGE 09990); Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (CAGE 86768)
Technical Specifications
ParameterValue
NSN4820-01-261-9844
Primary Part Number3-784-4
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-237-6339N37844 INTERCHANGEABLE
Plate,valve Diaphragm
Leslie Controls, Inc. Dba Leslie Controls Inc
5998-01-691-746821584-1 INTERCHANGEABLE
Interface Unit,input-Output
Coda Octopus Engineering, Inc.
Cross-Reference Index
Part NumberManufacturer
3-784-4 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
3-784-4 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
2-1584-1 PIECE 3 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
2-1584-1 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
Related Parts
4820-01-237-6339INTERCHANGEABLE
PLATE,VALVE DIAPHRAGM
N37844
5998-01-691-7468INTERCHANGEABLE
INTERFACE UNIT,INPUT-OUTPUT
21584-1

Frequently Asked Questions

What is NSN 4820-01-261-9844?

NSN 4820-01-261-9844 is a Disk,valve, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-261-9844?

NSN 4820-01-261-9844 has 4 cross-referenced part numbers: 3-784-4 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3-784-4 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 2-1584-1 PIECE 3 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 2-1584-1 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).

What NSN replaces 4820-01-261-9844?

There are 2 known substitutes for 4820-01-261-9844: 4820-01-237-6339, 5998-01-691-7468. Verify interchangeability with system specifications before substitution.

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