PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550426Valve,safety Relief

Lodestone Corp Div of Fedders Corp · NSN 4820-00-075-1319 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-075-1319 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-075-1319. Primary manufacturer part number: 550426.
Features
  • Valve,safety Relief — FSC 4820
  • Material: IRON CAST SEAT
  • Material: STEEL STEM
  • Material: IRON CAST BODY
  • Mounting Facility: THREADED FASTENER
  • 1 verified cross-reference
  • Primary manufacturer: Lodestone Corp Div of Fedders Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Iron Cast Seat construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-075-1319, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lodestone Corp Div of Fedders Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-075-1319
Primary Part Number550426
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLodestone Corp Div of Fedders Corp
StatusACTIVE
MaterialIRON CAST SEAT
MaterialSTEEL STEM
MaterialIRON CAST BODY
Mounting FacilityTHREADED FASTENER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-142-4387453X INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4730-01-585-132355-0426 INTERCHANGEABLE
Nipple,hose
Woodhead Industries Inc.
Cross-Reference Index
Part NumberManufacturer
550426 Lodestone Corp Div of Fedders Corp (USA)
Related Parts
3110-00-142-4387INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
453X
4730-01-585-1323INTERCHANGEABLE
NIPPLE,HOSE
55-0426

Frequently Asked Questions

What is NSN 4820-00-075-1319?

NSN 4820-00-075-1319 is a Valve,safety Relief, manufactured by Lodestone Corp Div of Fedders Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-075-1319?

NSN 4820-00-075-1319 has 1 cross-referenced part number: 550426 (Lodestone Corp Div of Fedders Corp).

What NSN replaces 4820-00-075-1319?

There are 2 known substitutes for 4820-00-075-1319: 3110-00-142-4387, 4730-01-585-1323. Verify interchangeability with system specifications before substitution.

What are the specifications of 550426?

Key specifications for 550426: Material: IRON CAST SEAT; Material: STEEL STEM; Material: IRON CAST BODY; Mounting Facility: THREADED FASTENER. 4 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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