PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M23AValve,safety Relief

Anderson Greenwood Lp Dba Anderson Greenwood Crosby · NSN 4820-00-202-7482 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-202-7482 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-202-7482. Primary manufacturer part number: M23A.
Features
  • Valve,safety Relief — FSC 4820
  • Features Provided: PRESSURE TIGHT OUTLET SIDE
  • Style Designator: ANGLE
  • Nominal Thread Size: 1.000 INCHES FIRST END IN
  • Thread Direction: RIGHT-HAND SECOND END
  • Material: NICKEL ALLOY FLOW CONTROL DEVICE
  • Nominal Pipe Size Accommodated: 1.000 INCHES SECOND END IN
  • Features Provided: PRESSURE TIGHT OUTLET SIDE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Flow Control Device construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-202-7482, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 30 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-202-7482
Primary Part NumberM23A
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAnderson Greenwood Lp Dba Anderson Greenwood Crosby
StatusACTIVE
Features ProvidedPRESSURE TIGHT OUTLET SIDE
Style DesignatorANGLE
Nominal Thread Size1.000 INCHES FIRST END IN
Thread DirectionRIGHT-HAND SECOND END
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Nominal Pipe Size Accommodated1.000 INCHES SECOND END IN
Features ProvidedPRESSURE TIGHT OUTLET SIDE
Connection StylePLAIN (PIPE) SECOND END
Connection StylePLAIN,OPTIONAL END(PIPE) FIRST END
Style DesignatorANGLE
Renewable Seat Ring TypeRETAINING SCREW
Thread Series DesignatorNPT SECOND END
Connection TypeTHREADED INTERNAL PIPE FIRST END
Nominal Thread Size1.000 INCHES SECOND END IN
MaterialNICKEL ALLOY SEAT
Nominal Thread Size1.000 INCHES FIRST END IN
Thread Series DesignatorNPT FIRST END
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Thread Series DesignatorNPT FIRST END
Nominal Thread Size1.000 INCHES SECOND END IN
Opening Pressure Setting350.0 POUNDS PER SQUARE INCH LBS
MaterialCOPPER ALLOY BODY
Opening Pressure Setting350.0 POUNDS PER SQUARE INCH LBS
Nominal Pipe Size Accommodated1.000 INCHES FIRST END IN
Disk Loading MethodSPRING
Thread Series DesignatorNPT SECOND END
Thread DirectionRIGHT-HAND FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
MaterialCOPPER ALLOY STEM
Flow Control DeviceDISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4820-00-202-748123-M 3/4 350PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
5935-00-242-1158FRE22952-2 INTERCHANGEABLE
Connector,receptacle,electrical
L3harris Technologies, Inc.
4820-00-541-275823MA 3/4IN 1000PSI AIR/GAS INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4130-01-032-29121305 INTERCHANGEABLE
Manifold,charging and Testing,re
Draf Industries, Inc
5310-01-546-1996 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
M23A Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
4820-00-202-7481INTERCHANGEABLE
VALVE,SAFETY RELIEF
23-M 3/4 350PSI
5935-00-242-1158INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
FRE22952-2
4820-00-541-2758INTERCHANGEABLE
VALVE,SAFETY RELIEF
23MA 3/4IN 1000PSI AIR/GAS
4130-01-032-2912INTERCHANGEABLE
MANIFOLD,CHARGING AND TESTING,RE
1305
5310-01-546-1996INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 4820-00-202-7482?

NSN 4820-00-202-7482 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-202-7482?

NSN 4820-00-202-7482 has 1 cross-referenced part number: M23A (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).

What NSN replaces 4820-00-202-7482?

There are 5 known substitutes for 4820-00-202-7482: 4820-00-202-7481, 5935-00-242-1158, 4820-00-541-2758 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M23A?

Key specifications for M23A: Features Provided: PRESSURE TIGHT OUTLET SIDE; Style Designator: ANGLE; Nominal Thread Size: 1.000 INCHES FIRST END IN; Thread Direction: RIGHT-HAND SECOND END. 30 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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