PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N43878Seat,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-113-7719 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-113-7719 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-113-7719. Primary manufacturer part number: N43878.
Features
  • Seat,valve — FSC 4820
  • Style Designator: PLAIN FLANGED
  • Seating Surface Shape: FLAT
  • Material: STEEL CORROSION RESISTING OVERALL
  • Flange Seat to Disk End Height: 0.770 INCHES NOMINAL IN
  • Body Outside Diameter: 1.874 INCHES NOMINAL IN
  • Flange Diameter: 2.235 INCHES NOMINAL IN
  • Body Inside Diameter: 1.380 INCHES NOMINAL IN
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 4820-01-113-7719, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-113-7719
Primary Part NumberN43878
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Style DesignatorPLAIN FLANGED
Seating Surface ShapeFLAT
MaterialSTEEL CORROSION RESISTING OVERALL
Flange Seat to Disk End Height0.770 INCHES NOMINAL IN
Body Outside Diameter1.874 INCHES NOMINAL IN
Flange Diameter2.235 INCHES NOMINAL IN
Body Inside Diameter1.380 INCHES NOMINAL IN
Under Flange Height0.187 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-444-026570-1178 INTERCHANGEABLE
Transformer,current
Department of Defense Project Manager-Mobile Electric Power
5950-00-581-92699139629 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5330-00-599-512049407 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
Cross-Reference Index
Part NumberManufacturer
43878 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N43878 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5950-00-444-0265INTERCHANGEABLE
TRANSFORMER,CURRENT
70-1178
5950-00-581-9269INTERCHANGEABLE
TRANSFORMER,POWER
9139629
5330-00-599-5120INTERCHANGEABLE
SEAL,PLAIN ENCASED
49407

Frequently Asked Questions

What is NSN 4820-01-113-7719?

NSN 4820-01-113-7719 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-113-7719?

NSN 4820-01-113-7719 has 2 cross-referenced part numbers: 43878 (Leslie Controls, Inc. Dba Leslie Controls Inc), N43878 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-113-7719?

There are 3 known substitutes for 4820-01-113-7719: 5950-00-444-0265, 5950-00-581-9269, 5330-00-599-5120. Verify interchangeability with system specifications before substitution.

What are the specifications of N43878?

Key specifications for N43878: Style Designator: PLAIN FLANGED; Seating Surface Shape: FLAT; Material: STEEL CORROSION RESISTING OVERALL; Flange Seat to Disk End Height: 0.770 INCHES NOMINAL IN. 8 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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