PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14363NRCPC21Seat,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-944-8765 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-944-8765 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-944-8765. Primary manufacturer part number: 14363NRCPC21.
Features
  • Seat,valve — FSC 4820
  • Body Outside Diameter: 1.182 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
  • Under Flange Height: 0.438 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 0.562 INCHES NOMINAL IN
  • Seating Surface Shape: ANGULAR
  • Flange Diameter: 1.800 INCHES NOMINAL IN
  • Body Inside Diameter: 0.812 INCHES NOMINAL IN
  • Style Designator: PLAIN FLANGED
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 302 Body construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-944-8765, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-944-8765
Primary Part Number14363NRCPC21
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Body Outside Diameter1.182 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
Under Flange Height0.438 INCHES NOMINAL IN
Flange Seat to Disk End Height0.562 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
Flange Diameter1.800 INCHES NOMINAL IN
Body Inside Diameter0.812 INCHES NOMINAL IN
Style DesignatorPLAIN FLANGED
Seat Angle in Deg45.000 NOMINAL
Material Document and ClassificationMIL-R-17131 MIL SPEC SINGLE MATERIAL RESPONSE FACE
MaterialSTEEL COMP 302 BODY
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY
MaterialSTEEL FACE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4720-00-459-605031140 INTERCHANGEABLE
Hose Assembly,fuel
Dressta North America Ltd
3455-00-517-595215437 INTERCHANGEABLE
Cutter,milling,end
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5330-00-730-6884125295 INTERCHANGEABLE
Gasket
Fwd Seagrave Holdings Lp
5133-00-841-862240726 INTERCHANGEABLE
Drill,twist
New York Twist Drill Inc
5925-00-949-296631140 INTERCHANGEABLE
Circuit Breaker
Siemens Electric Ltd
5342-01-172-632531140 INTERCHANGEABLE
Insert
Unison Industries Llc
5998-01-195-32035487 INTERCHANGEABLE
Circuit Card Assembly
Data Device Corp Dba Beta Transformer Technology
Cross-Reference Index
Part NumberManufacturer
14363NRCPC21 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
14363NPC21 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
31140 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
14363RCPC21 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4720-00-459-6050INTERCHANGEABLE
HOSE ASSEMBLY,FUEL
31140
3455-00-517-5952INTERCHANGEABLE
CUTTER,MILLING,END
15437
5330-00-730-6884INTERCHANGEABLE
GASKET
125295
5133-00-841-8622INTERCHANGEABLE
DRILL,TWIST
40726
5925-00-949-2966INTERCHANGEABLE
CIRCUIT BREAKER
31140
5342-01-172-6325INTERCHANGEABLE
INSERT
31140
5998-01-195-3203INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5487

Frequently Asked Questions

What is NSN 4820-00-944-8765?

NSN 4820-00-944-8765 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 4820-00-944-8765?

NSN 4820-00-944-8765 has 4 cross-referenced part numbers: 14363NRCPC21 (Leslie Controls, Inc. Dba Leslie Controls Inc), 14363NPC21 (Leslie Controls, Inc. Dba Leslie Controls Inc), 31140 (Leslie Controls, Inc. Dba Leslie Controls Inc), 14363RCPC21 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-00-944-8765?

There are 7 known substitutes for 4820-00-944-8765: 4720-00-459-6050, 3455-00-517-5952, 5330-00-730-6884 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14363NRCPC21?

Key specifications for 14363NRCPC21: Body Outside Diameter: 1.182 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN; Under Flange Height: 0.438 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.562 INCHES NOMINAL 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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