PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

559B-6M-10Valve,safety Relief

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 4820-00-796-2632 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-796-2632 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-796-2632. Primary manufacturer part number: 559B-6M-10.
Features
  • Valve,safety Relief — FSC 4820
  • Media for Which Designed: AIR FIRST RESPONSE
  • Adjustable Pressure Range: +5.0 TO 15.0 POUNDS PER SQUARE INCH LBS
  • Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN
  • Media for Which Designed: REFRIGERANT 12 FOURTH RESPONSE
  • Maximum Operating Temp: 250.0 FAHRENHEIT SECOND RESPONSE DEGF
  • Thread Quantity Per Inch: 14 FIRST END
  • Maximum Operating Temp: -40.0 FAHRENHEIT FIRST RESPONSE DEGF
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Body construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-796-2632, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 22 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-796-2632
Primary Part Number559B-6M-10
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
Media for Which DesignedAIR FIRST RESPONSE
Adjustable Pressure Range+5.0 TO 15.0 POUNDS PER SQUARE INCH LBS
Nominal Pipe Size Accommodated0.750 INCHES FIRST END IN
Media for Which DesignedREFRIGERANT 12 FOURTH RESPONSE
Maximum Operating Temp250.0 FAHRENHEIT SECOND RESPONSE DEGF
Thread Quantity Per Inch14 FIRST END
Maximum Operating Temp-40.0 FAHRENHEIT FIRST RESPONSE DEGF
Opening Pressure Setting10.0 POUNDS PER SQUARE INCH LBS
MaterialCOPPER ALLOY BODY
Operating Pressure10.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS
Thread Series DesignatorNPT FIRST END
Media for Which DesignedHYDROGEN FIFTH RESPONSE
Style DesignatorSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
Media for Which DesignedAMMONIA, GASEOUS THIRD RESPONSE
Flow Control DevicePOPPET
Connection TypeTHREADED EXTERNAL PIPE FIRST END
Nominal Thread Size0.750 INCHES FIRST END IN
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which DesignedACETYLENE SECOND RESPONSE
Thread DirectionRIGHT-HAND FIRST END
Connection StylePLAIN (PIPE) FIRST END
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5133-00-227-9668 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
9171332 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
559B-6M-10 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
5133-00-227-9668INTERCHANGEABLE
DRILL,TWIST

Frequently Asked Questions

What is NSN 4820-00-796-2632?

NSN 4820-00-796-2632 is a Valve,safety Relief, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-796-2632?

NSN 4820-00-796-2632 has 2 cross-referenced part numbers: 9171332 (U S Army Tank Automotive Command Amsta-Im-Mm), 559B-6M-10 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 4820-00-796-2632?

There is 1 known substitute for 4820-00-796-2632: 5133-00-227-9668. Verify interchangeability with system specifications before substitution.

What are the specifications of 559B-6M-10?

Key specifications for 559B-6M-10: Media for Which Designed: AIR FIRST RESPONSE; Adjustable Pressure Range: +5.0 TO 15.0 POUNDS PER SQUARE INCH LBS; Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Media for Which Designed: REFRIGERANT 12 FOURTH RESPONSE. 23 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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