PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20061A41BValve,safety Relief

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-01-274-6676 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-274-6676 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-274-6676. Primary manufacturer part number: 20061A41B.
Features
  • Valve,safety Relief — FSC 4820
  • Material: NICKEL ALLOY SEAT
  • Material: COPPER ALLOY STEM
  • Valve Operation Method: AUTOMATIC
  • Flow Control Device: DISK
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
  • Style Designator: ANGLE
  • Material: NICKEL ALLOY FLOW CONTROL DEVICE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Seat construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-274-6676, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-274-6676
Primary Part Number20061A41B
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
MaterialNICKEL ALLOY SEAT
MaterialCOPPER ALLOY STEM
Valve Operation MethodAUTOMATIC
Flow Control DeviceDISK
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
Style DesignatorANGLE
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Adjustable Pressure Range+5.0 TO 9.0 POUNDS PER SQUARE INCH LBS
Connection StyleSTREAMLINED WITH ONE BRAZING RING (TUBE) ALL ENDS
Bonnet Attachment MethodINTEGRAL
MaterialCOPPER ALLOY BODY
Nominal Outside Diameter Tube Accommodated1.250 INCHES ALL ENDS IN
Bonnet TypeINSIDE SCREW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4730-00-061-6910200-61 INTERCHANGEABLE
Nipple,tube
Swagelok Co
6105-00-082-194520061 INTERCHANGEABLE
Motor,control
Orbit International Corp. Div Orbit Instrument
5133-00-084-434841-11048 INTERCHANGEABLE
Drill,twist
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5133-00-228-1346 INTERCHANGEABLE
Drill,twist
4730-00-274-335143B01569PC659 INTERCHANGEABLE
Packing Nut
Naval Ship Systems Command
5910-00-863-3616SMC433505 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5305-00-968-537720061 INTERCHANGEABLE
Screw,accelerometer
Cadillac Gage Textron Inc.
4520-01-149-927320061 INTERCHANGEABLE
Cover,exhaust Stack
C-Way Industries Inc
5340-01-465-2487 INTERCHANGEABLE
Clip,retaining
Cross-Reference Index
Part NumberManufacturer
20061A41B PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
20061A41B Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
20061 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
4730-00-061-6910INTERCHANGEABLE
NIPPLE,TUBE
200-61
6105-00-082-1945INTERCHANGEABLE
MOTOR,CONTROL
20061
5133-00-084-4348INTERCHANGEABLE
DRILL,TWIST
41-11048
5133-00-228-1346INTERCHANGEABLE
DRILL,TWIST
4730-00-274-3351INTERCHANGEABLE
PACKING NUT
43B01569PC659
5910-00-863-3616INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
SMC433505
5305-00-968-5377INTERCHANGEABLE
SCREW,ACCELEROMETER
20061
4520-01-149-9273INTERCHANGEABLE
COVER,EXHAUST STACK
20061
5340-01-465-2487INTERCHANGEABLE
CLIP,RETAINING

Frequently Asked Questions

What is NSN 4820-01-274-6676?

NSN 4820-01-274-6676 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-274-6676?

NSN 4820-01-274-6676 has 3 cross-referenced part numbers: 20061A41B (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20061A41B (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 20061 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).

What NSN replaces 4820-01-274-6676?

There are 9 known substitutes for 4820-01-274-6676: 4730-00-061-6910, 6105-00-082-1945, 5133-00-084-4348 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20061A41B?

Key specifications for 20061A41B: Material: NICKEL ALLOY SEAT; Material: COPPER ALLOY STEM; Valve Operation Method: AUTOMATIC; Flow Control Device: DISK. 13 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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