PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12597Seat,valve

Schneider Electric Systems Usa Inc · NSN 4820-00-036-0989 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-0989 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-0989. Primary manufacturer part number: 12597.
Features
  • Seat,valve — FSC 4820
  • Flange Diameter: 1.125 INCHES NOMINAL IN
  • Under Flange Height: 0.309 INCHES NOMINAL IN
  • Thread Length: 0.309 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Seating Surface Shape: ANGULAR
  • Material: STEEL CORROSION RESISTING OVERALL
  • Nominal Thread Size: 0.938 INCHES SINGLE THREADED PORTION IN
  • Thread Series Designator: UNS SINGLE THREADED PORTION
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-036-0989, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Schneider Electric Systems Usa Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-036-0989
Primary Part Number12597
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSchneider Electric Systems Usa Inc
StatusACTIVE
Flange Diameter1.125 INCHES NOMINAL IN
Under Flange Height0.309 INCHES NOMINAL IN
Thread Length0.309 INCHES NOMINAL SINGLE THREADED PORTION IN
Seating Surface ShapeANGULAR
MaterialSTEEL CORROSION RESISTING OVERALL
Nominal Thread Size0.938 INCHES SINGLE THREADED PORTION IN
Thread Series DesignatorUNS SINGLE THREADED PORTION
Flange Seat to Disk End Height0.160 INCHES NOMINAL IN
Seat Angle in Deg0.750 NOMINAL
Body Inside Diameter0.138 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
Thread Quantity Per Inch18 SINGLE THREADED PORTION
Style DesignatorTHREADED FLANGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4320-00-035-6899125-97 INTERCHANGEABLE
Seal Assembly,shaft,spring Loade
Dresser Industries Inc Leroi Div
3040-00-147-2026312597 INTERCHANGEABLE
Lever,remote Control
Brp Us Inc
4820-00-845-1096 INTERCHANGEABLE
Cock,drain
5950-00-853-275512597 INTERCHANGEABLE
Reactor
Robert M. Hadley Company, Inc.
3020-00-894-759312597 INTERCHANGEABLE
Gear,spur
Grimes Aerospace Company
3020-01-128-423612597 INTERCHANGEABLE
Gear,helical
Westerbeke Corporation
3455-01-336-166612597 INTERCHANGEABLE
Blade,band Saw,metal Cutting
L.s. Starrett Company (the) Div Tool Division
7045-01-367-0387 INTERCHANGEABLE
Disk,flexible
6550-01-575-105688753 INTERCHANGEABLE
Control,blood Chemistry
Quidel Corp
Cross-Reference Index
Part NumberManufacturer
12597 PRIMARY Schneider Electric Systems Usa Inc (USA)
Related Parts
4320-00-035-6899INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT,SPRING LOADE
125-97
3040-00-147-2026INTERCHANGEABLE
LEVER,REMOTE CONTROL
312597
4820-00-845-1096INTERCHANGEABLE
COCK,DRAIN
5950-00-853-2755INTERCHANGEABLE
REACTOR
12597
3020-00-894-7593INTERCHANGEABLE
GEAR,SPUR
12597
3020-01-128-4236INTERCHANGEABLE
GEAR,HELICAL
12597
3455-01-336-1666INTERCHANGEABLE
BLADE,BAND SAW,METAL CUTTING
12597
7045-01-367-0387INTERCHANGEABLE
DISK,FLEXIBLE
6550-01-575-1056INTERCHANGEABLE
CONTROL,BLOOD CHEMISTRY
88753

Frequently Asked Questions

What is NSN 4820-00-036-0989?

NSN 4820-00-036-0989 is a Seat,valve, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-0989?

NSN 4820-00-036-0989 has 1 cross-referenced part number: 12597 (Schneider Electric Systems Usa Inc).

What NSN replaces 4820-00-036-0989?

There are 9 known substitutes for 4820-00-036-0989: 4320-00-035-6899, 3040-00-147-2026, 4820-00-845-1096 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12597?

Key specifications for 12597: Flange Diameter: 1.125 INCHES NOMINAL IN; Under Flange Height: 0.309 INCHES NOMINAL IN; Thread Length: 0.309 INCHES NOMINAL SINGLE THREADED PORTION IN; Seating Surface Shape: ANGULAR. 12 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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