PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1AO900Thermal Valve

Hydro Engineering Innovation, Llc · NSN 4820-01-668-8115 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-668-8115 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-668-8115. Primary manufacturer part number: 1AO900.
Features
  • Thermal Valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Hydro Engineering Innovation, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Thermal Valve, cataloged under National Stock Number 4820-01-668-8115, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro Engineering Innovation, Llc. This item has 2 commercial cross-references 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: Active.

Technical Specifications
ParameterValue
NSN4820-01-668-8115
Primary Part Number1AO900
Item NameThermal Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHydro Engineering Innovation, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-001-7463920011-1 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4931-00-026-6279417805PC1 INTERCHANGEABLE
Stand
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6130-01-029-2902100557 INTERCHANGEABLE
Power Supply Subassembly
Rodale Electronics Inc. Dba Rodale Wireless
5998-01-066-0289100557 INTERCHANGEABLE
Printed Circuit Board
Enterprise Electronics Corp
5340-01-125-2571100557 INTERCHANGEABLE
Bumper
Prc Composites, Llc Dba Globe Plastics
6625-01-137-6138 INTERCHANGEABLE
Meter,multiple Scale
4520-01-475-5016100557 INTERCHANGEABLE
Heating Element,electrical,nonim
Indeeco Llc Dba Indeeco
4820-01-559-0157 INTERCHANGEABLE
Valve,relief,pressure and Temper
Cross-Reference Index
Part NumberManufacturer
1AO900 PRIMARY Hydro Engineering Innovation, Llc (USA)
100557 Hydro Engineering Innovation, Llc (USA)
Related Parts
5950-00-001-7463INTERCHANGEABLE
COIL,RADIO FREQUENCY
920011-1
4931-00-026-6279INTERCHANGEABLE
STAND
417805PC1
6130-01-029-2902INTERCHANGEABLE
POWER SUPPLY SUBASSEMBLY
100557
5998-01-066-0289INTERCHANGEABLE
PRINTED CIRCUIT BOARD
100557
5340-01-125-2571INTERCHANGEABLE
BUMPER
100557
6625-01-137-6138INTERCHANGEABLE
METER,MULTIPLE SCALE
4520-01-475-5016INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
100557
4820-01-559-0157INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER

Frequently Asked Questions

What is NSN 4820-01-668-8115?

NSN 4820-01-668-8115 is a Thermal Valve, manufactured by Hydro Engineering Innovation, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-668-8115?

NSN 4820-01-668-8115 has 2 cross-referenced part numbers: 1AO900 (Hydro Engineering Innovation, Llc), 100557 (Hydro Engineering Innovation, Llc).

What NSN replaces 4820-01-668-8115?

There are 8 known substitutes for 4820-01-668-8115: 5950-00-001-7463, 4931-00-026-6279, 6130-01-029-2902 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1AO900?

Key specifications for 1AO900: End Item Identification: SONAR TA TICA. 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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