PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-2177525-M725MOD600PSIValve,angle

Naval Ship Systems Command · NSN 4820-00-601-0972 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-601-0972 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-601-0972. Primary manufacturer part number: 803-2177525-M725MOD600PSI.
Features
  • Valve,angle — FSC 4820
  • Flange Face Design: PLAIN SECOND END
  • Style Designator: ANGLE FLANGED ENDS
  • Flange Face Design: RAISED STRAIGHT FIRST END
  • Bolt Hole Nominal Diameter: 0.812 INCHES FIRST END IN
  • Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
  • Material: NICKEL ALLOY SEAT
  • Nominal Outside Diameter: 6.125 INCHES FIRST END IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Flow Control Device construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-601-0972, 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 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-601-0972
Primary Part Number803-2177525-M725MOD600PSI
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusCANCELLED
Flange Face DesignPLAIN SECOND END
Style DesignatorANGLE FLANGED ENDS
Flange Face DesignRAISED STRAIGHT FIRST END
Bolt Hole Nominal Diameter0.812 INCHES FIRST END IN
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MaterialNICKEL ALLOY SEAT
Nominal Outside Diameter6.125 INCHES FIRST END IN
Bolt Hole Quantity4 FIRST END
Bolt Circle Nominal Diameter4.500 INCHES FIRST END IN
Bolt Hole Quantity4 SECOND END
MaterialNICKEL ALLOY BODY
Valve Operation MethodMANUAL
Flange ShapeROUND WITH HOLES FIRST END
Connection TypeFLANGE SECOND END
Nominal Thickness0.875 INCHES FIRST END IN
Connection TypeFLANGE FIRST END
Flange ShapeROUND WITH HOLES SECOND END
Operating Pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Bolt Circle Nominal Diameter4.500 INCHES SECOND END IN
Nominal Outside Diameter6.125 INCHES SECOND END IN
Bonnet TypeOUTSIDE SCREW-YOKE
Nominal Thickness0.875 INCHES SECOND END IN
First Connection Face to Centerline Distance4.500 INCHES IN
Bolt Hole Nominal Diameter0.812 INCHES SECOND END IN
Raised Face Nominal Diameter3.625 INCHES FIRST END IN
Second Connection Face to Centerline Distance4.500 INCHES IN
Bonnet Attachment MethodBOLTED
Flow Control DeviceDISK
MaterialNICKEL ALLOY STEM
Raised Face Nominal Height0.250 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4820-00-287-4595 INTERCHANGEABLE
Valve,angle
4820-01-018-3780F073076B2TS/33652-6D/882010602 INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-018-3781F073076B02TS/33652-6D/882010603 INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-040-8971 INTERCHANGEABLE
Valve,angle
4820-01-140-4834F07-2076B-02TS 3362-7LKDVC INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-142-8701 INTERCHANGEABLE
Valve,globe
4820-01-356-2641 INTERCHANGEABLE
Valve,y
Cross-Reference Index
Part NumberManufacturer
810-2177525-M725M0D600PSI Naval Sea Systems Command (USA)
803-2177525-M725MOD600PSI PRIMARY Naval Ship Systems Command (USA)
810-2177525M725M0D600PSI Naval Ship Systems Command (USA)
R557-49963 Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse (USA)
MILV17737 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
803-2177525 Naval Ship Systems Command (USA)
Related Parts
4820-00-287-4595INTERCHANGEABLE
VALVE,ANGLE
4820-01-018-3780INTERCHANGEABLE
VALVE,Y
F073076B2TS/33652-6D/882010602
4820-01-018-3781INTERCHANGEABLE
VALVE,Y
F073076B02TS/33652-6D/882010603
4820-01-040-8971INTERCHANGEABLE
VALVE,ANGLE
4820-01-140-4834INTERCHANGEABLE
VALVE,Y
F07-2076B-02TS 3362-7LKDVC
4820-01-142-8701INTERCHANGEABLE
VALVE,GLOBE
4820-01-356-2641INTERCHANGEABLE
VALVE,Y

Frequently Asked Questions

What is NSN 4820-00-601-0972?

NSN 4820-00-601-0972 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 4820-00-601-0972?

NSN 4820-00-601-0972 has 6 cross-referenced part numbers: 810-2177525-M725M0D600PSI (Naval Sea Systems Command), 803-2177525-M725MOD600PSI (Naval Ship Systems Command), 810-2177525M725M0D600PSI (Naval Ship Systems Command), R557-49963 (Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse), MILV17737 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4820-00-601-0972?

There are 7 known substitutes for 4820-00-601-0972: 4820-00-287-4595, 4820-01-018-3780, 4820-01-018-3781 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-2177525-M725MOD600PSI?

Key specifications for 803-2177525-M725MOD600PSI: Flange Face Design: PLAIN SECOND END; Style Designator: ANGLE FLANGED ENDS; Flange Face Design: RAISED STRAIGHT FIRST END; Bolt Hole Nominal Diameter: 0.812 INCHES FIRST END IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-601-0972 still in active supply?

NSN 4820-00-601-0972 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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