PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

158894Valve,safety Relief

Eaton Aerospace, Llc Dba Jackson South · NSN 4820-00-807-8094 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-807-8094 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-807-8094. Primary manufacturer part number: 158894.
Features
  • Valve,safety Relief — FSC 4820
  • Media for Which Designed: OIL, HYDRAULIC SECOND RESPONSE
  • Material: IRON CAST UNS F12801 OVERALL
  • Material Document and Classification: QQ-I-652,CLASS 40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Valve Discharge Flow Rate: 40.0 GALLONS PER MINUTE
  • Media for Which Designed: AIR FIRST RESPONSE
  • Flow Control Device: POPPET
  • Maximum Operating Temp: 120.0 FAHRENHEIT SINGLE RESPONSE DEGF
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Iron Cast Uns F12801 Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-807-8094, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 10 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-807-8094
Primary Part Number158894
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
Media for Which DesignedOIL, HYDRAULIC SECOND RESPONSE
MaterialIRON CAST UNS F12801 OVERALL
Material Document and ClassificationQQ-I-652,CLASS 40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Valve Discharge Flow Rate40.0 GALLONS PER MINUTE
Media for Which DesignedAIR FIRST RESPONSE
Flow Control DevicePOPPET
Maximum Operating Temp120.0 FAHRENHEIT SINGLE RESPONSE DEGF
Valve Operation MethodAUTOMATIC
Disk Loading MethodSPRING
Operating Pressure2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2920-01-164-15291990483 INTERCHANGEABLE
Starter,engine,electrical
Delco Remy America Inc
Cross-Reference Index
Part NumberManufacturer
158894 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
2920-01-164-1529INTERCHANGEABLE
STARTER,ENGINE,ELECTRICAL
1990483

Frequently Asked Questions

What is NSN 4820-00-807-8094?

NSN 4820-00-807-8094 is a Valve,safety Relief, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-807-8094?

NSN 4820-00-807-8094 has 1 cross-referenced part number: 158894 (Eaton Aerospace, Llc Dba Jackson South).

What NSN replaces 4820-00-807-8094?

There is 1 known substitute for 4820-00-807-8094: 2920-01-164-1529. Verify interchangeability with system specifications before substitution.

What are the specifications of 158894?

Key specifications for 158894: Media for Which Designed: OIL, HYDRAULIC SECOND RESPONSE; Material: IRON CAST UNS F12801 OVERALL; Material Document and Classification: QQ-I-652,CLASS 40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Valve Discharge Flow Rate: 40.0 GALLONS PER MINUTE. 10 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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