PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-1385637-062AFValve,check

Naval Ship Systems Command · NSN 4820-00-489-5348 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-489-5348 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-489-5348. Primary manufacturer part number: 803-1385637-062AF.
Features
  • Valve,check — FSC 4820
  • Flow Control Device: DISK
  • Connection Type: FLANGE ALL ENDS
  • Material: NICKEL ALLOY FLOW CONTROL DEVICE
  • Valve Operation Method: AUTOMATIC
  • Media for Which Designed: WATER, SALT SINGLE RESPONSE
  • Flange Face Design: PLAIN ALL ENDS
  • Bolt Circle Nominal Diameter: 8.875 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Flow Control Device construction
General Description

The Valve,check, cataloged under National Stock Number 4820-00-489-5348, 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 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 2 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
NSN4820-00-489-5348
Primary Part Number803-1385637-062AF
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusCANCELLED
Flow Control DeviceDISK
Connection TypeFLANGE ALL ENDS
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Valve Operation MethodAUTOMATIC
Media for Which DesignedWATER, SALT SINGLE RESPONSE
Flange Face DesignPLAIN ALL ENDS
Bolt Circle Nominal Diameter8.875 INCHES ALL ENDS IN
Nominal Outside Diameter10.125 INCHES ALL ENDS IN
Face to Face Distance15.250 INCHES IN
Style DesignatorSTRAIGHT THRU
Material Document and ClassificationQQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
Bolt Hole Nominal Diameter0.688 INCHES ALL ENDS IN
MaterialNICKEL ALLOY SEAT
MaterialCOPPER ALLOY 922 BODY
Bolt Hole Quantity12 ALL ENDS
Renewable Seat Ring TypeTHREADED
Flange ShapeROUND WITH HOLES ALL ENDS
Mounting PositionHORIZONTAL
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Valve Size6.000 INCHES IN
Nominal Thickness1.188 INCHES ALL ENDS IN
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4820-00-058-3509803-1385637-023AF INTERCHANGEABLE
Valve,check
Naval Ship Systems Command
4820-00-058-36301385637-052AF INTERCHANGEABLE
Valve,check
Naval Ship Systems Command
4820-00-878-4325803-1385637-082 INTERCHANGEABLE
Valve,check
Naval Ship Systems Command
4820-01-116-4865 INTERCHANGEABLE
Valve,check
4820-01-348-6202803-1385637-062 INTERCHANGEABLE
Valve,check
Naval Ship Systems Command
4820-01-438-3050 INTERCHANGEABLE
Valve,check
4820-01-481-9105 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
803-1385637-062AF PRIMARY Naval Ship Systems Command (USA)
1260-011G 6IN Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
810-1385637-6 Naval Ship Systems Command (USA)
803-1385637-062 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
1260-011K 600 PRIMARY Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
S4824-1385637 Naval Ship Systems Command (USA)
803-1385637-062 NON-ASBESTOS Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
803-1385637-6 Naval Ship Systems Command (USA)
5000-4824-1385637 Naval Ship Systems Command (USA)
Related Parts
4820-00-058-3509INTERCHANGEABLE
VALVE,CHECK
803-1385637-023AF
4820-00-058-3630INTERCHANGEABLE
VALVE,CHECK
1385637-052AF
4820-00-878-4325INTERCHANGEABLE
VALVE,CHECK
803-1385637-082
4820-01-116-4865INTERCHANGEABLE
VALVE,CHECK
4820-01-348-6202INTERCHANGEABLE
VALVE,CHECK
803-1385637-062
4820-01-438-3050INTERCHANGEABLE
VALVE,CHECK
4820-01-481-9105INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 4820-00-489-5348?

NSN 4820-00-489-5348 is a Valve,check, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-489-5348?

NSN 4820-00-489-5348 has 9 cross-referenced part numbers: 803-1385637-062AF (Naval Ship Systems Command), 1260-011G 6IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 810-1385637-6 (Naval Ship Systems Command), 803-1385637-062 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1260-011K 600 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc) and 4 more.

What NSN replaces 4820-00-489-5348?

There are 7 known substitutes for 4820-00-489-5348: 4820-00-058-3509, 4820-00-058-3630, 4820-00-878-4325 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-1385637-062AF?

Key specifications for 803-1385637-062AF: Flow Control Device: DISK; Connection Type: FLANGE ALL ENDS; Material: NICKEL ALLOY FLOW CONTROL DEVICE; Valve Operation Method: AUTOMATIC. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-489-5348 still in active supply?

NSN 4820-00-489-5348 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