PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-4-493Valve,globe

Flowserve Inc · NSN 4820-01-280-3933 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-280-3933 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-280-3933. Primary manufacturer part number: 3-4-493.
Features
  • Valve,globe — FSC 4820
  • Nominal Outside Diameter: 4.625 INCHES ALL ENDS IN
  • Raised Face Nominal Diameter: 1.688 INCHES IN
  • Operating Pressure: 1480.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
  • Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE
  • Valve Operation Method: MANUAL
  • Bolt Hole Nominal Diameter: 0.750 INCHES ALL ENDS IN
  • Face to Face Distance: 7.500 INCHES IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Uns K03504 Body construction
General Description

The Valve,globe, cataloged under National Stock Number 4820-01-280-3933, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 26 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-280-3933
Primary Part Number3-4-493
Item NameValve,globe
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Nominal Outside Diameter4.625 INCHES ALL ENDS IN
Raised Face Nominal Diameter1.688 INCHES IN
Operating Pressure1480.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Valve Operation MethodMANUAL
Bolt Hole Nominal Diameter0.750 INCHES ALL ENDS IN
Face to Face Distance7.500 INCHES IN
Operating Pressure105.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Bonnet Attachment MethodBOLTED
Bolt Circle Nominal Diameter3.250 INCHES ALL ENDS IN
Flange ShapeROUND WITH HOLES ALL ENDS
Raised Face Nominal Height0.250 INCHES IN
Bolt Hole Quantity4 ALL ENDS
Media for Which DesignedSTEAM FIRST RESPONSE
Maximum Operating Temp1000.0 FAHRENHEIT FIRST RESPONSE DEGF
Connection TypeFLANGE ALL ENDS
MaterialSTEEL UNS K03504 BODY
Valve Size0.750 INCHES IN
Features ProvidedBONNET PACKING
Nominal Thickness0.625 INCHES ALL ENDS IN
Flange Face DesignRAISED STRAIGHT ALL ENDS
Flow Control DeviceDISK
Maximum Operating Temp100.0 FAHRENHEIT SECOND RESPONSE DEGF
Material Document and ClassificationASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY
Style DesignatorSTRAIGHT THRU FLANGED ENDS
Bonnet TypeOUTSIDE SCREW-YOKE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5945-00-239-265334-493 INTERCHANGEABLE
Relay,electromagnetic
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5940-00-615-2495764-5.5-11.2 INTERCHANGEABLE
Terminal,stud
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
4920-01-570-629234493 INTERCHANGEABLE
Grounding Strap,air
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
3-4-493 PRIMARY Flowserve Inc (USA)
Related Parts
5945-00-239-2653INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
34-493
5940-00-615-2495INTERCHANGEABLE
TERMINAL,STUD
764-5.5-11.2
4920-01-570-6292INTERCHANGEABLE
GROUNDING STRAP,AIR
34493

Frequently Asked Questions

What is NSN 4820-01-280-3933?

NSN 4820-01-280-3933 is a Valve,globe, manufactured by Flowserve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-280-3933?

NSN 4820-01-280-3933 has 1 cross-referenced part number: 3-4-493 (Flowserve Inc).

What NSN replaces 4820-01-280-3933?

There are 3 known substitutes for 4820-01-280-3933: 5945-00-239-2653, 5940-00-615-2495, 4920-01-570-6292. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-4-493?

Key specifications for 3-4-493: Nominal Outside Diameter: 4.625 INCHES ALL ENDS IN; Raised Face Nominal Diameter: 1.688 INCHES IN; Operating Pressure: 1480.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS; Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE. 27 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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