PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15782Seat,valve

Flowserve Inc · NSN 4820-01-075-7378 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-075-7378 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-075-7378. Primary manufacturer part number: 15782.
Features
  • Seat,valve — FSC 4820
  • Under Flange Height: 0.953 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 0.405 INCHES NOMINAL IN
  • Body Inside Diameter: 1.010 INCHES NOMINAL IN
  • Material: STEEL COMP 416 OVERALL
  • Style Designator: THREADED FLANGED
  • Thread Series Designator: UN SINGLE THREADED PORTION
  • Flange Diameter: 2.010 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 416 Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-075-7378, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 13 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-075-7378
Primary Part Number15782
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Under Flange Height0.953 INCHES NOMINAL IN
Flange Seat to Disk End Height0.405 INCHES NOMINAL IN
Body Inside Diameter1.010 INCHES NOMINAL IN
MaterialSTEEL COMP 416 OVERALL
Style DesignatorTHREADED FLANGED
Thread Series DesignatorUN SINGLE THREADED PORTION
Flange Diameter2.010 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Thread Length0.438 INCHES NOMINAL SINGLE THREADED PORTION IN
Seating Surface ShapeANGULAR
Nominal Thread Size1.500 INCHES SINGLE THREADED PORTION IN
Seat Angle in Deg45.000 NOMINAL
Thread Quantity Per Inch16 SINGLE THREADED PORTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-159-021310-420-2 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
3040-01-103-320915782 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Imi Cash Valve Inc
5340-01-178-1903153313 INTERCHANGEABLE
Handwheel
American Hofmann Corp
4820-01-183-4736N521960057 INTERCHANGEABLE
Cap,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-475-24511578-2 INTERCHANGEABLE
Valve,plug
Staples & Pfeiffer, Inc.
Cross-Reference Index
Part NumberManufacturer
15782 PRIMARY Flowserve Inc (USA)
Related Parts
5940-00-159-0213INTERCHANGEABLE
TERMINAL,STUD
10-420-2
3040-01-103-3209INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
15782
5340-01-178-1903INTERCHANGEABLE
HANDWHEEL
153313
4820-01-183-4736INTERCHANGEABLE
CAP,VALVE
N521960057
4820-01-475-2451INTERCHANGEABLE
VALVE,PLUG
1578-2

Frequently Asked Questions

What is NSN 4820-01-075-7378?

NSN 4820-01-075-7378 is a Seat,valve, manufactured by Flowserve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-075-7378?

NSN 4820-01-075-7378 has 1 cross-referenced part number: 15782 (Flowserve Inc).

What NSN replaces 4820-01-075-7378?

There are 5 known substitutes for 4820-01-075-7378: 5940-00-159-0213, 3040-01-103-3209, 5340-01-178-1903 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15782?

Key specifications for 15782: Under Flange Height: 0.953 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.405 INCHES NOMINAL IN; Body Inside Diameter: 1.010 INCHES NOMINAL IN; Material: STEEL COMP 416 OVERALL. 13 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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