PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-2177934-B426AFValve,angle

Naval Ship Systems Command · NSN 4820-01-151-6302 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-151-6302 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-151-6302. Primary manufacturer part number: 803-2177934-B426AF.
Features
  • Valve,angle — FSC 4820
  • Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
  • Bonnet Type: INSIDE SPRING
  • Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Nominal Pipe Size Accommodated: 0.750 INCHES ALL ENDS IN
  • Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE
  • Renewable Seat Ring Type: THREADED
  • Operating Pressure: 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Stem construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-01-151-6302, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-151-6302
Primary Part Number803-2177934-B426AF
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusCANCELLED
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Bonnet TypeINSIDE SPRING
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Nominal Pipe Size Accommodated0.750 INCHES ALL ENDS IN
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Renewable Seat Ring TypeTHREADED
Operating Pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Flow Control DeviceDISK
Valve Operation MethodMANUAL
Connection StyleSTREAMLINED WITH TWO BRAZING RINGS ALL ENDS
Bonnet Attachment MethodTHREADED
MaterialNICKEL ALLOY STEM
Style DesignatorANGLE
MaterialNICKEL ALLOY SEAT
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-871-893554386 INTERCHANGEABLE
Seat,valve
The Walworth Company
4820-00-944-8740 INTERCHANGEABLE
Valve,angle
4820-01-043-36262620-902ASSYCF1 1/2INPC4 INTERCHANGEABLE
Seat,valve
The Walworth Company
4820-01-067-365384094-F-940 INTERCHANGEABLE
Disk,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-071-98955160-B1-380 INTERCHANGEABLE
Seat,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-073-58492620-902 ASSYC1-2INPC4 INTERCHANGEABLE
Seat,valve
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-075-6588803-2177934-X7XX-19 INTERCHANGEABLE
Seat,valve
Naval Ship Systems Command
5310-01-087-7113SS845-1889587PC6 1IN INTERCHANGEABLE
Locknut,disk Valve
Naval Ship Systems Command
4730-01-088-448470030854 INTERCHANGEABLE
Packing Nut
The Walworth Company
4820-01-105-357251163-F-380 INTERCHANGEABLE
Seat,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
Cross-Reference Index
Part NumberManufacturer
SS845-1889587 The Walworth Company (USA)
2620-902 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
SS845-1889587 A Naval Ship Systems Command (USA)
SS845-1889587ASSYD3-4IN The Walworth Company (USA)
803-2177934-B426 Naval Ship Systems Command (USA)
SS845-1889587ASSYD3-4IN Naval Ship Systems Command (USA)
2620-902ASSYD3-4IN Electric Boat Corporation Div General Dynamics Electric Boat (USA)
SS845-1889587 Naval Ship Systems Command (USA)
803-2177934-B426AF PRIMARY Naval Ship Systems Command (USA)
Related Parts
4820-00-871-8935INTERCHANGEABLE
SEAT,VALVE
54386
4820-00-944-8740INTERCHANGEABLE
VALVE,ANGLE
4820-01-043-3626INTERCHANGEABLE
SEAT,VALVE
2620-902ASSYCF1 1/2INPC4
4820-01-067-3653INTERCHANGEABLE
DISK,VALVE
84094-F-940
4820-01-071-9895INTERCHANGEABLE
SEAT,VALVE
5160-B1-380
4820-01-073-5849INTERCHANGEABLE
SEAT,VALVE
2620-902 ASSYC1-2INPC4
4820-01-075-6588INTERCHANGEABLE
SEAT,VALVE
803-2177934-X7XX-19
5310-01-087-7113INTERCHANGEABLE
LOCKNUT,DISK VALVE
SS845-1889587PC6 1IN
4730-01-088-4484INTERCHANGEABLE
PACKING NUT
70030854
4820-01-105-3572INTERCHANGEABLE
SEAT,VALVE
51163-F-380
4820-01-113-0783INTERCHANGEABLE
CAP,VALVE
2620-902ASSYB PIECE24 1-2IN
4820-01-117-9670INTERCHANGEABLE
DISK,VALVE
2620-902-ASSYB PC 27

Frequently Asked Questions

What is NSN 4820-01-151-6302?

NSN 4820-01-151-6302 is a Valve,angle, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-151-6302?

NSN 4820-01-151-6302 has 9 cross-referenced part numbers: SS845-1889587 (The Walworth Company), 2620-902 (Electric Boat Corporation Div General Dynamics Electric Boat), SS845-1889587 A (Naval Ship Systems Command), SS845-1889587ASSYD3-4IN (The Walworth Company), 803-2177934-B426 (Naval Ship Systems Command) and 4 more.

What NSN replaces 4820-01-151-6302?

There are 12 known substitutes for 4820-01-151-6302: 4820-00-871-8935, 4820-00-944-8740, 4820-01-043-3626 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-2177934-B426AF?

Key specifications for 803-2177934-B426AF: Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Bonnet Type: INSIDE SPRING; Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF; Nominal Pipe Size Accommodated: 0.750 INCHES ALL ENDS IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-151-6302 still in active supply?

NSN 4820-01-151-6302 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.
PartsTable Design LLC · partstable.com