PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1260-014K800Valve,check

Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc · NSN 4820-01-426-2460 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-426-2460 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-426-2460. Primary manufacturer part number: 1260-014K800.
Features
  • Valve,check — FSC 4820
  • Valve Operation Method: AUTOMATIC
  • Connection Type: FLANGE ALL ENDS
  • Style Designator: STRAIGHT THRU FLANGED ENDS
  • Flange Face Design: PLAIN ALL ENDS
  • Nominal Outside Diameter: 12.375 INCHES FIRST END IN
  • Bolt Hole Quantity: 12 FIRST END
  • Maximum Operating Temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Seat construction
General Description

The Valve,check, cataloged under National Stock Number 4820-01-426-2460, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-426-2460
Primary Part Number1260-014K800
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
StatusACTIVE
Valve Operation MethodAUTOMATIC
Connection TypeFLANGE ALL ENDS
Style DesignatorSTRAIGHT THRU FLANGED ENDS
Flange Face DesignPLAIN ALL ENDS
Nominal Outside Diameter12.375 INCHES FIRST END IN
Bolt Hole Quantity12 FIRST END
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
MaterialNICKEL ALLOY SEAT
Bolt Circle Nominal Diameter12.468 INCHES ALL ENDS IN
Furnished Items and Quantity1 CAP
Nominal Thickness1.125 INCHES SECOND END IN
Nominal Outside Diameter13.500 INCHES SECOND END IN
MaterialNICKEL ALLOY FLOW CONTROL DEVICE
Bolt Hole Nominal Diameter0.875 INCHES SECOND END IN
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Face to Face Distance18.500 INCHES IN
Flange ShapeROUND WITH HOLES ALL ENDS
Flow Control DeviceDISK
Nominal Thickness1.312 INCHES FIRST END IN
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Bolt Hole Nominal Diameter0.812 INCHES FIRST END IN
Valve Size8.000 INCHES IN
Mounting PositionHORIZONTAL
Bolt Circle Nominal Diameter11.750 INCHES SECOND END IN
Bolt Hole Quantity8 SECOND END
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
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
4820-01-072-1204803-1385637-04X-17 INTERCHANGEABLE
Disk,valve
Naval Ship Systems Command
4820-01-435-5880803-1385637-05X-20 INTERCHANGEABLE
Disk,valve
Naval Ship Systems Command
5310-01-487-7109803-1385637-06X-22 INTERCHANGEABLE
Washer,flat
Naval Ship Systems Command
5310-01-487-7137803-1385637-02X-22 INTERCHANGEABLE
Washer,flat
Naval Ship Systems Command
5310-01-487-8128803-1385637-05X-22 INTERCHANGEABLE
Washer,flat
Naval Ship Systems Command
5310-01-521-1009803-1385637-10X-11 INTERCHANGEABLE
Nut,plain,hexagon
Naval Ship Systems Command
5310-01-521-1020803-1385637-03X-11 INTERCHANGEABLE
Nut,plain,hexagon
Naval Ship Systems Command
5310-01-521-1025803-1385637-05X-11 INTERCHANGEABLE
Nut,plain,hexagon
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
1260-014H CDS-1260-014H-U-0001 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
1385637 Naval Ship Systems Command (USA)
1260-014K800 PRIMARY Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
1260-014J800 Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
803-1385637 8IN. Naval Ship Systems Command (USA)
Related Parts
4820-00-058-3630INTERCHANGEABLE
VALVE,CHECK
1385637-052AF
4820-00-878-4325INTERCHANGEABLE
VALVE,CHECK
803-1385637-082
4820-01-072-1204INTERCHANGEABLE
DISK,VALVE
803-1385637-04X-17
4820-01-435-5880INTERCHANGEABLE
DISK,VALVE
803-1385637-05X-20
5310-01-487-7109INTERCHANGEABLE
WASHER,FLAT
803-1385637-06X-22
5310-01-487-7137INTERCHANGEABLE
WASHER,FLAT
803-1385637-02X-22
5310-01-487-8128INTERCHANGEABLE
WASHER,FLAT
803-1385637-05X-22
5310-01-521-1009INTERCHANGEABLE
NUT,PLAIN,HEXAGON
803-1385637-10X-11
5310-01-521-1020INTERCHANGEABLE
NUT,PLAIN,HEXAGON
803-1385637-03X-11
5310-01-521-1025INTERCHANGEABLE
NUT,PLAIN,HEXAGON
803-1385637-05X-11
4820-01-540-8802INTERCHANGEABLE
SEAT,VALVE
803-1385637-08X-08

Frequently Asked Questions

What is NSN 4820-01-426-2460?

NSN 4820-01-426-2460 is a Valve,check, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-426-2460?

NSN 4820-01-426-2460 has 5 cross-referenced part numbers: 1260-014H CDS-1260-014H-U-0001 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1385637 (Naval Ship Systems Command), 1260-014K800 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1260-014J800 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 803-1385637 8IN. (Naval Ship Systems Command).

What NSN replaces 4820-01-426-2460?

There are 11 known substitutes for 4820-01-426-2460: 4820-00-058-3630, 4820-00-878-4325, 4820-01-072-1204 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1260-014K800?

Key specifications for 1260-014K800: Valve Operation Method: AUTOMATIC; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Flange Face Design: PLAIN ALL ENDS. 27 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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