PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L6B1547-1Valve,angle

Raytheon Company Dba Raytheon Co · NSN 4820-00-287-4604 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-287-4604 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-287-4604. Primary manufacturer part number: L6B1547-1.
Features
  • Valve,angle — FSC 4820
  • Bonnet Type: INSIDE SCREW
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
  • Material: COPPER ALLOY SEAT
  • Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Features Provided: BONNET PACKING
  • Material: COPPER ALLOY STEM
  • Media for Which Designed: REFRIGERANT 12 FIRST RESPONSE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Seat construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-287-4604, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-287-4604
Primary Part NumberL6B1547-1
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon Co
StatusCANCELLED
Bonnet TypeINSIDE SCREW
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
MaterialCOPPER ALLOY SEAT
Maximum Operating Temp275.0 FAHRENHEIT SINGLE RESPONSE DEGF
Features ProvidedBONNET PACKING
MaterialCOPPER ALLOY STEM
Media for Which DesignedREFRIGERANT 12 FIRST RESPONSE
Valve Operation MethodMANUAL
Style DesignatorANGLE
Flow Control DeviceDISK
Nominal Outside Diameter Tube Accommodated1.125 INCHES ALL ENDS IN
Connection StyleSOCKET (TUBE) ALL ENDS
Bonnet Attachment MethodBOLTED
Operating Pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialCOPPER ALLOY BODY
MaterialPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
Media for Which DesignedREFRIGERANT 22 SECOND RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4820-00-277-1715 INTERCHANGEABLE
Valve,angle
Cross-Reference Index
Part NumberManufacturer
L6B1547-1 Raytheon Company Dba Raytheon Co (USA)
L681547-1 Raytheon Company Dba Raytheon Co (USA)
EA15666 U S Dept of Transportation Federal Aviation Administration (USA)
6478N Henry Technologies, Inc. (USA)
2160B Henry Technologies, Inc. (USA)
S311Y1INCH Nibco Inc (USA)
Related Parts
4820-00-277-1715INTERCHANGEABLE
VALVE,ANGLE

Frequently Asked Questions

What is NSN 4820-00-287-4604?

NSN 4820-00-287-4604 is a Valve,angle, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-287-4604?

NSN 4820-00-287-4604 has 6 cross-referenced part numbers: L6B1547-1 (Raytheon Company Dba Raytheon Co), L681547-1 (Raytheon Company Dba Raytheon Co), EA15666 (U S Dept of Transportation Federal Aviation Administration), 6478N (Henry Technologies, Inc.), 2160B (Henry Technologies, Inc.) and 1 more.

What NSN replaces 4820-00-287-4604?

There is 1 known substitute for 4820-00-287-4604: 4820-00-277-1715. Verify interchangeability with system specifications before substitution.

What are the specifications of L6B1547-1?

Key specifications for L6B1547-1: Bonnet Type: INSIDE SCREW; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Material: COPPER ALLOY SEAT; Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-287-4604 still in active supply?

NSN 4820-00-287-4604 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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