PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

38-493Valve,safety Relief

Hydro-Aire Aerospace Corp · NSN 4820-01-044-8853 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-044-8853 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-044-8853. Primary manufacturer part number: 38-493.
Features
  • Valve,safety Relief — FSC 4820
  • Surface Treatment: ANODIZE LOCATION NOT OTHERWISE SPECIFIED
  • Material: ALUMINUM ALLOY BODY
  • Flow Control Device: DISK
  • Valve Operation Method: AUTOMATIC
  • 2 verified cross-references
  • Primary manufacturer: Hydro-Aire Aerospace Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy Body construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-044-8853, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 4 verified specifications, 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
NSN4820-01-044-8853
Primary Part Number38-493
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Surface TreatmentANODIZE LOCATION NOT OTHERWISE SPECIFIED
MaterialALUMINUM ALLOY BODY
Flow Control DeviceDISK
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4330-00-529-6015 INTERCHANGEABLE
Hub,friction Clutch
3120-00-733-886138493 INTERCHANGEABLE
Bearing,sleeve
New Venture Gear Inc New Process Gear Div
5340-01-649-450838493 INTERCHANGEABLE
Bracket,mounting
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
51940PC14 Atlantic Container Corp (USA)
38-493 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
4330-00-529-6015INTERCHANGEABLE
HUB,FRICTION CLUTCH
3120-00-733-8861INTERCHANGEABLE
BEARING,SLEEVE
38493
5340-01-649-4508INTERCHANGEABLE
BRACKET,MOUNTING
38493

Frequently Asked Questions

What is NSN 4820-01-044-8853?

NSN 4820-01-044-8853 is a Valve,safety Relief, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-044-8853?

NSN 4820-01-044-8853 has 2 cross-referenced part numbers: 51940PC14 (Atlantic Container Corp), 38-493 (Hydro-Aire Aerospace Corp).

What NSN replaces 4820-01-044-8853?

There are 3 known substitutes for 4820-01-044-8853: 4330-00-529-6015, 3120-00-733-8861, 5340-01-649-4508. Verify interchangeability with system specifications before substitution.

What are the specifications of 38-493?

Key specifications for 38-493: Surface Treatment: ANODIZE LOCATION NOT OTHERWISE SPECIFIED; Material: ALUMINUM ALLOY BODY; Flow Control Device: DISK; Valve Operation Method: AUTOMATIC. 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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