PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

548 1/2INValve,safety Relief

Anderson Greenwood Lp Dba Anderson Greenwood Crosby · NSN 4820-01-348-7874 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-348-7874 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-348-7874. Primary manufacturer part number: 548 1/2IN.
Features
  • Valve,safety Relief — FSC 4820
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Connection Type: THREADED EXTERNAL PIPE ALL ENDS
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Opening Pressure Setting: 125.0 POUNDS PER SQUARE INCH LBS
  • Thread Series Designator: NPT ALL ENDS
  • Media for Which Designed: AIR SINGLE RESPONSE
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 4820-01-348-7874, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-348-7874
Primary Part Number548 1/2IN
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAnderson Greenwood Lp Dba Anderson Greenwood Crosby
StatusACTIVE
Thread DirectionRIGHT-HAND ALL ENDS
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Connection StylePLAIN (PIPE) ALL ENDS
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Opening Pressure Setting125.0 POUNDS PER SQUARE INCH LBS
Thread Series DesignatorNPT ALL ENDS
Media for Which DesignedAIR SINGLE RESPONSE
Style DesignatorANGLE
MaterialCOPPER ALLOY BODY
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Valve Operation MethodAUTOMATIC
Nominal Thread Size0.500 INCHES ALL ENDS IN
Flow Control DevicePOPPET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5315-00-198-6124MS24692-55 INTERCHANGEABLE
Pin,tapered,plain
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5915-00-500-99862920137-15 INTERCHANGEABLE
Filter,band Pass
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5920-00-519-69251105506 INTERCHANGEABLE
Fuse Link,electrical
Westinghouse Electric Corp
2610-00-528-7760 INTERCHANGEABLE
Inner Tube,pneumatic Tire,vehicu
5360-01-111-731564015 INTERCHANGEABLE
Spring,helical,compression
Defense Maritime Solutions, Inc.
7510-01-129-11217100029526 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3m Company
4720-01-186-057064015 INTERCHANGEABLE
Hose,nonmetallic
Cummins Inc.
Cross-Reference Index
Part NumberManufacturer
0548-C-0125 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
548 1/2IN PRIMARY Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
64015 Davey Compressor Co Div of Keco Industries Inc (USA)
540 1/2IN Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
13229E0227 Cecom Lr Center (USA)
Related Parts
5315-00-198-6124INTERCHANGEABLE
PIN,TAPERED,PLAIN
MS24692-55
5915-00-500-9986INTERCHANGEABLE
FILTER,BAND PASS
2920137-15
5920-00-519-6925INTERCHANGEABLE
FUSE LINK,ELECTRICAL
1105506
2610-00-528-7760INTERCHANGEABLE
INNER TUBE,PNEUMATIC TIRE,VEHICU
5360-01-111-7315INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
64015
7510-01-129-1121INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
7100029526
4720-01-186-0570INTERCHANGEABLE
HOSE,NONMETALLIC
64015

Frequently Asked Questions

What is NSN 4820-01-348-7874?

NSN 4820-01-348-7874 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 4820-01-348-7874?

NSN 4820-01-348-7874 has 5 cross-referenced part numbers: 0548-C-0125 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 548 1/2IN (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 64015 (Davey Compressor Co Div of Keco Industries Inc), 540 1/2IN (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 13229E0227 (Cecom Lr Center).

What NSN replaces 4820-01-348-7874?

There are 7 known substitutes for 4820-01-348-7874: 5315-00-198-6124, 5915-00-500-9986, 5920-00-519-6925 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 548 1/2IN?

Key specifications for 548 1/2IN: Thread Direction: RIGHT-HAND ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Connection Style: PLAIN (PIPE) ALL ENDS; Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF. 14 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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