PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55128Guide,valve Disk

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-00-862-9409 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-862-9409 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-862-9409. Primary manufacturer part number: 55128.
Features
  • Guide,valve Disk — FSC 4820
  • General Characteristics Item Description: NICOLOY,ACI CB-30; 4.243 IN. FLANGE DIA,0.190 IN. THK FLANGE; 1.855 IN. ID,COUNTERBORED TO 2.385 IN. DIA,1.285 IN. LG; THD OD,2-7/16 IN. 18 UNS THD SIZE; FOR VALVE BLOW-DOWN ADJUSTMENT; 4.000 IN. O/A LG IN
  • 2 verified cross-references
  • Primary manufacturer: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Guide,valve Disk, cataloged under National Stock Number 4820-00-862-9409, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN4820-00-862-9409
Primary Part Number55128
Item NameGuide,valve Disk
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
General Characteristics Item DescriptionNICOLOY,ACI CB-30; 4.243 IN. FLANGE DIA,0.190 IN. THK FLANGE; 1.855 IN. ID,COUNTERBORED TO 2.385 IN. DIA,1.285 IN. LG; THD OD,2-7/16 IN. 18 UNS THD SIZE; FOR VALVE BLOW-DOWN ADJUSTMENT; 4.000 IN. O/A LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-051-133355128 INTERCHANGEABLE
Ball,bearing
Avox Systems Inc Dba Avox Systems Inc
2530-00-359-17613H3989 INTERCHANGEABLE
Shield,housing Stee
Caterpillar Inc Div Caterpillar Defense
5930-01-244-819355128 INTERCHANGEABLE
Switch,toggle
Wells Mfg Co
Cross-Reference Index
Part NumberManufacturer
55128 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
F-46172 Electronic Plastics Co (USA)
Related Parts
3110-00-051-1333INTERCHANGEABLE
BALL,BEARING
55128
2530-00-359-1761INTERCHANGEABLE
SHIELD,HOUSING STEE
3H3989
5930-01-244-8193INTERCHANGEABLE
SWITCH,TOGGLE
55128

Frequently Asked Questions

What is NSN 4820-00-862-9409?

NSN 4820-00-862-9409 is a Guide,valve Disk, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-862-9409?

NSN 4820-00-862-9409 has 2 cross-referenced part numbers: 55128 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), F-46172 (Electronic Plastics Co).

What NSN replaces 4820-00-862-9409?

There are 3 known substitutes for 4820-00-862-9409: 3110-00-051-1333, 2530-00-359-1761, 5930-01-244-8193. Verify interchangeability with system specifications before substitution.

What are the specifications of 55128?

Key specifications for 55128: General Characteristics Item Description: NICOLOY,ACI CB-30; 4.243 IN. FLANGE DIA,0.190 IN. THK FLANGE; 1.855 IN. ID,COUNTERBORED TO 2.385 IN. DIA,1.285 IN. LG; THD OD,2-7/16 IN. 18 UNS THD SIZE; FOR VALVE BLOW-DOWN ADJUSTMENT; 4.000 IN. O/A LG IN. 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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