PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25121Seat,valve

Meggitt North Hollywood Inc · NSN 4820-00-032-8826 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-032-8826 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-032-8826. Primary manufacturer part number: 25121.
Features
  • Seat,valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Meggitt North Hollywood Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-032-8826, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Meggitt North Hollywood Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersMeggitt North Hollywood Inc (CAGE 79318)
Technical Specifications
ParameterValue
NSN4820-00-032-8826
Primary Part Number25121
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMeggitt North Hollywood Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
4530-00-080-734825121 INTERCHANGEABLE
Piston Assembly,fuel Unit
Danfoss Inc
5133-00-228-1332 INTERCHANGEABLE
Drill,twist
5360-00-263-456325121 INTERCHANGEABLE
Spring,helical,compression
Honeywell International Inc. Div Aerospace - Torrance
5330-00-715-5144 INTERCHANGEABLE
Gasket
5331-01-091-847325-121 INTERCHANGEABLE
O-Ring
Stewart & Stevenson Power Products Llc
3455-01-236-792425121 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
6685-01-426-4789251-21 INTERCHANGEABLE
Thermometer,indicating,capillary
Shinko Ind. Ltd
4720-01-537-7776 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
25121 PRIMARY Meggitt North Hollywood Inc (USA)
Related Parts
4530-00-080-7348INTERCHANGEABLE
PISTON ASSEMBLY,FUEL UNIT
25121
5133-00-228-1332INTERCHANGEABLE
DRILL,TWIST
5360-00-263-4563INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
25121
5330-00-715-5144INTERCHANGEABLE
GASKET
5331-01-091-8473INTERCHANGEABLE
O-RING
25-121
3455-01-236-7924INTERCHANGEABLE
CUTTER,MILLING,END
25121
6685-01-426-4789INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
251-21
4720-01-537-7776INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 4820-00-032-8826?

NSN 4820-00-032-8826 is a Seat,valve, manufactured by Meggitt North Hollywood Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-032-8826?

NSN 4820-00-032-8826 has 1 cross-referenced part number: 25121 (Meggitt North Hollywood Inc).

What NSN replaces 4820-00-032-8826?

There are 8 known substitutes for 4820-00-032-8826: 4530-00-080-7348, 5133-00-228-1332, 5360-00-263-4563 and 5 more. Verify interchangeability with system specifications before substitution.

Is NSN 4820-00-032-8826 still in active supply?

NSN 4820-00-032-8826 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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