PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4P158-1Valve,safety Relief

Allen Aircraft Products Inc · NSN 4820-01-182-4408 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-182-4408 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-182-4408. Primary manufacturer part number: 4P158-1.
Features
  • Valve,safety Relief — FSC 4820
  • 5 verified cross-references
  • Primary manufacturer: Allen Aircraft Products Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-182-4408, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Allen Aircraft Products Inc. This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAllen Aircraft Products Inc (CAGE 82829); Raytheon Company Dba Raytheon Co (CAGE 3B150); Raytheon Company (CAGE 54X10); Raytheon Company Div Corp (CAGE 49956); Safeguard Electric Co of Luray Inc (CAGE 82894)
Technical Specifications
ParameterValue
NSN4820-01-182-4408
Primary Part Number4P158-1
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAllen Aircraft Products Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6115-00-602-7906 INTERCHANGEABLE
Converter,thermal Watt
Cross-Reference Index
Part NumberManufacturer
4P158-1 PRIMARY Allen Aircraft Products Inc (USA)
929032-1 PRIMARY Raytheon Company Dba Raytheon Co (USA)
929032-1 Raytheon Company (USA)
929032-1 Raytheon Company Div Corp (USA)
P158-1 Safeguard Electric Co of Luray Inc (USA)
Related Parts
6115-00-602-7906INTERCHANGEABLE
CONVERTER,THERMAL WATT

Frequently Asked Questions

What is NSN 4820-01-182-4408?

NSN 4820-01-182-4408 is a Valve,safety Relief, manufactured by Allen Aircraft Products Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-182-4408?

NSN 4820-01-182-4408 has 5 cross-referenced part numbers: 4P158-1 (Allen Aircraft Products Inc), 929032-1 (Raytheon Company Dba Raytheon Co), 929032-1 (Raytheon Company), 929032-1 (Raytheon Company Div Corp), P158-1 (Safeguard Electric Co of Luray Inc).

What NSN replaces 4820-01-182-4408?

There is 1 known substitute for 4820-01-182-4408: 6115-00-602-7906. Verify interchangeability with system specifications before substitution.

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