PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20557Retainer,disk,valve

Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val · NSN 4810-01-378-8839 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-378-8839 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-378-8839. Primary manufacturer part number: 20557.
Features
  • Retainer,disk,valve — FSC 4810
  • 1 verified cross-reference
  • Primary manufacturer: Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Retainer,disk,valve, cataloged under National Stock Number 4810-01-378-8839, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,disk,valve
FSC / FSG4810 — No Item Name Available (FSG 48)
ManufacturersTriumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val (CAGE 61898)
Technical Specifications
ParameterValue
NSN4810-01-378-8839
Primary Part Number20557
Item NameRetainer,disk,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerTriumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4720-00-035-891920557 INTERCHANGEABLE
Hose,preformed
Gates Corporation
6130-00-235-099220557 INTERCHANGEABLE
Vibrator,self-Rectifying
Naval Ship Systems Command
5930-00-302-1125C2001-501 INTERCHANGEABLE
Switch,toggle
Calculagraph Company Dba Control Products, Inc.
1015-01-229-544120557 INTERCHANGEABLE
Retainer,valve Head
Real-Time Laboratories, Llc
4130-01-327-940020557 INTERCHANGEABLE
Filter-Drier,refrigerant
Schneider Metal Mfg Co Inc Ross Temp Div
5120-01-430-8146 INTERCHANGEABLE
Crowfoot Attachment,socket Wrenc
4720-01-695-002220557 INTERCHANGEABLE
Hose Assembly,nonmetallic
Lockheed Martin Corporation
Cross-Reference Index
Part NumberManufacturer
20557 PRIMARY Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val (USA)
Related Parts
4720-00-035-8919INTERCHANGEABLE
HOSE,PREFORMED
20557
6130-00-235-0992INTERCHANGEABLE
VIBRATOR,SELF-RECTIFYING
20557
5930-00-302-1125INTERCHANGEABLE
SWITCH,TOGGLE
C2001-501
1015-01-229-5441INTERCHANGEABLE
RETAINER,VALVE HEAD
20557
4130-01-327-9400INTERCHANGEABLE
FILTER-DRIER,REFRIGERANT
20557
5120-01-430-8146INTERCHANGEABLE
CROWFOOT ATTACHMENT,SOCKET WRENC
4720-01-695-0022INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
20557

Frequently Asked Questions

What is NSN 4810-01-378-8839?

NSN 4810-01-378-8839 is a Retainer,disk,valve, manufactured by Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-378-8839?

NSN 4810-01-378-8839 has 1 cross-referenced part number: 20557 (Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val).

What NSN replaces 4810-01-378-8839?

There are 7 known substitutes for 4810-01-378-8839: 4720-00-035-8919, 6130-00-235-0992, 5930-00-302-1125 and 4 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com