PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SS845-1889587ASSYD1-2INValve,angle

Naval Ship Systems Command · NSN 4820-00-943-7278 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-943-7278 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-943-7278. Primary manufacturer part number: SS845-1889587ASSYD1-2IN.
Features
  • Valve,angle — FSC 4820
  • Features Provided: BONNET PACKING
  • Renewable Seat Ring Type: THREADED
  • Flow Control Device: DISK
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
  • Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN
  • Nondefinitive Spec/std Data: D ASSEMBLY
  • Material: NICKEL ALLOY 400 SEAT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy 400 Seat construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-943-7278, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, 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
NSN4820-00-943-7278
Primary Part NumberSS845-1889587ASSYD1-2IN
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Features ProvidedBONNET PACKING
Renewable Seat Ring TypeTHREADED
Flow Control DeviceDISK
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Nominal Pipe Size Accommodated0.500 INCHES FIRST END IN
Nondefinitive Spec/std DataD ASSEMBLY
MaterialNICKEL ALLOY 400 SEAT
Bonnet TypeINSIDE SCREW
Operating Pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection StyleSOCKET WITH BRAZING RING FIRST END
MaterialCOPPER ALLOY 922 BODY
Valve Operation MethodMANUAL
Bonnet Attachment MethodTHREADED
MaterialNICKEL ALLOY 400 FLOW CONTROL DEVICE
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Style DesignatorANGLE
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Test Data Document80064-SS845-1889587 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
MaterialNICKEL ALLOY 400 STEM
Furnished Items and Quantity2 BRAZING RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5315-00-078-0966594112 INTERCHANGEABLE
Pin,shoulder,headless
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
4820-01-058-7683594-1-12 INTERCHANGEABLE
Valve,angle
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-156-8235803-2177934-B326AF INTERCHANGEABLE
Valve,angle
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
2620-902ASSYD1-2IN The Walworth Company (USA)
SS845-1889587ASSYD1-2IN PRIMARY Naval Ship Systems Command (USA)
2620-902ASSYD1-2IN Electric Boat Corporation Div General Dynamics Electric Boat (USA)
594-1 1-2 Naval Sea Systems Command (USA)
Related Parts
5315-00-078-0966INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
594112
4820-01-058-7683INTERCHANGEABLE
VALVE,ANGLE
594-1-12
4820-01-156-8235INTERCHANGEABLE
VALVE,ANGLE
803-2177934-B326AF

Frequently Asked Questions

What is NSN 4820-00-943-7278?

NSN 4820-00-943-7278 is a Valve,angle, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-943-7278?

NSN 4820-00-943-7278 has 4 cross-referenced part numbers: 2620-902ASSYD1-2IN (The Walworth Company), SS845-1889587ASSYD1-2IN (Naval Ship Systems Command), 2620-902ASSYD1-2IN (Electric Boat Corporation Div General Dynamics Electric Boat), 594-1 1-2 (Naval Sea Systems Command).

What NSN replaces 4820-00-943-7278?

There are 3 known substitutes for 4820-00-943-7278: 5315-00-078-0966, 4820-01-058-7683, 4820-01-156-8235. Verify interchangeability with system specifications before substitution.

What are the specifications of SS845-1889587ASSYD1-2IN?

Key specifications for SS845-1889587ASSYD1-2IN: Features Provided: BONNET PACKING; Renewable Seat Ring Type: THREADED; Flow Control Device: DISK; Connection Type: UNTHREADED INTERNAL PIPE FIRST END. 20 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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