PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2620-902L1Valve,angle

Naval Inventory Control Point Mechanicsburg · NSN 4820-00-944-8740 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-944-8740 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-944-8740. Primary manufacturer part number: 2620-902L1.
Features
  • Valve,angle — FSC 4820
  • Bonnet Type: INSIDE SCREW
  • Bonnet Attachment Method: THREADED
  • Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN
  • Connection Style: STREAMLINED WITH TWO BRAZING RINGS FIRST END
  • Flow Control Device: DISK
  • Material: NICKEL ALLOY SEAT
  • Material: COPPER ALLOY BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Seat construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-944-8740, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-944-8740
Primary Part Number2620-902L1
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusCANCELLED
Bonnet TypeINSIDE SCREW
Bonnet Attachment MethodTHREADED
Nominal Pipe Size Accommodated0.750 INCHES FIRST END IN
Connection StyleSTREAMLINED WITH TWO BRAZING RINGS FIRST END
Flow Control DeviceDISK
MaterialNICKEL ALLOY SEAT
MaterialCOPPER ALLOY BODY
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Renewable Seat Ring TypeTHREADED
Valve Operation MethodMANUAL
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
MaterialNICKEL ALLOY STEM
Style DesignatorANGLE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
Furnished Items and Quantity4 BRAZING RING
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Operating Pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
4820-00-922-8422 INTERCHANGEABLE
Valve,stop-Check
4820-00-926-4214 INTERCHANGEABLE
Valve,globe
4820-00-943-1011 INTERCHANGEABLE
Valve,check
4820-00-943-1014 INTERCHANGEABLE
Valve,check
4820-00-943-7272 INTERCHANGEABLE
Valve,gate
4820-00-943-7275 INTERCHANGEABLE
Valve,gate
4820-00-943-7276 INTERCHANGEABLE
Valve,gate
4820-00-945-1746 INTERCHANGEABLE
Valve,angle
4820-01-150-4255 INTERCHANGEABLE
Valve,globe
4820-01-151-6302803-2177934-B426AF INTERCHANGEABLE
Valve,angle
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
2620-902L1 Naval Inventory Control Point Mechanicsburg (USA)
845-1889587ASSYD,3-4INL1 Naval Inventory Control Point Mechanicsburg (USA)
2620-902ASSYD3-4IN Naval Inventory Control Point Mechanicsburg (USA)
SS845-1889587ASSYD3-4INL1 Naval Inventory Control Point Mechanicsburg (USA)
594-1 3-4 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
2620-902 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2620-902ASSYD3-4IN Electric Boat Corporation Div General Dynamics Electric Boat (USA)
SS845-1889587ASSYD3-4IN Naval Ship Systems Command (USA)
594-1 3-4L1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
4820-00-922-8422INTERCHANGEABLE
VALVE,STOP-CHECK
4820-00-926-4214INTERCHANGEABLE
VALVE,GLOBE
4820-00-943-1011INTERCHANGEABLE
VALVE,CHECK
4820-00-943-1014INTERCHANGEABLE
VALVE,CHECK
4820-00-943-7272INTERCHANGEABLE
VALVE,GATE
4820-00-943-7275INTERCHANGEABLE
VALVE,GATE
4820-00-943-7276INTERCHANGEABLE
VALVE,GATE
4820-00-945-1746INTERCHANGEABLE
VALVE,ANGLE
4820-01-150-4255INTERCHANGEABLE
VALVE,GLOBE
4820-01-151-6302INTERCHANGEABLE
VALVE,ANGLE
803-2177934-B426AF

Frequently Asked Questions

What is NSN 4820-00-944-8740?

NSN 4820-00-944-8740 is a Valve,angle, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-944-8740?

NSN 4820-00-944-8740 has 9 cross-referenced part numbers: 2620-902L1 (Naval Inventory Control Point Mechanicsburg), 845-1889587ASSYD,3-4INL1 (Naval Inventory Control Point Mechanicsburg), 2620-902ASSYD3-4IN (Naval Inventory Control Point Mechanicsburg), SS845-1889587ASSYD3-4INL1 (Naval Inventory Control Point Mechanicsburg), 594-1 3-4 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc) and 4 more.

What NSN replaces 4820-00-944-8740?

There are 10 known substitutes for 4820-00-944-8740: 4820-00-922-8422, 4820-00-926-4214, 4820-00-943-1011 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2620-902L1?

Key specifications for 2620-902L1: Bonnet Type: INSIDE SCREW; Bonnet Attachment Method: THREADED; Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Connection Style: STREAMLINED WITH TWO BRAZING RINGS FIRST END. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-944-8740 still in active supply?

NSN 4820-00-944-8740 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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