PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N11191Disk,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-403-5641 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-403-5641 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-403-5641. Primary manufacturer part number: N11191.
Features
  • Disk,valve — FSC 4820
  • Flange Seat to Disk End Height: 2.375 INCHES NOMINAL IN
  • Shank Diameter: 0.424 INCHES NOMINAL IN
  • Under Flange Height: 1.188 INCHES NOMINAL IN
  • Material: STEEL
  • Seat Angle: 45.0 DEGREES NOMINAL
  • Tip Diameter: 0.472 INCHES NOMINAL IN
  • Style Designator: POPPET
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-403-5641, 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 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-403-5641
Primary Part NumberN11191
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Flange Seat to Disk End Height2.375 INCHES NOMINAL IN
Shank Diameter0.424 INCHES NOMINAL IN
Under Flange Height1.188 INCHES NOMINAL IN
MaterialSTEEL
Seat Angle45.0 DEGREES NOMINAL
Tip Diameter0.472 INCHES NOMINAL IN
Style DesignatorPOPPET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1680-00-091-24041119-1 INTERCHANGEABLE
Bellows
Precision Metal Products, Inc
5330-00-297-452011191 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4330-00-420-7557BT-839 W/G-401 INTERCHANGEABLE
Filter Element,fluid
Baldwin Filters
6105-00-813-9224035463 INTERCHANGEABLE
Motor,alternating Current
Rotron Incorporated
5950-00-864-768811191 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
4730-01-004-83461537 INTERCHANGEABLE
Adapter,straight,pipe to Hose
Danfoss Power Solutions II, Llc
1420-01-179-832711191 INTERCHANGEABLE
Heater Assembly
Technical Heaters, Inc. Dba Technical Heaters Inc
4820-01-191-4187 INTERCHANGEABLE
Retainer,seat,valve
5340-01-193-9571NH1010750-10 INTERCHANGEABLE
Clamp,loop
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
6240-01-295-515911191 INTERCHANGEABLE
Lamp,incandescent
Pmc/beta Ltd Partnership
Cross-Reference Index
Part NumberManufacturer
PNS101-1PC4 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
PNS120-1PC4 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
11191 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
N11191 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
11191 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
1680-00-091-2404INTERCHANGEABLE
BELLOWS
1119-1
5330-00-297-4520INTERCHANGEABLE
SEAL,PLAIN ENCASED
11191
4330-00-420-7557INTERCHANGEABLE
FILTER ELEMENT,FLUID
BT-839 W/G-401
6105-00-813-9224INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
035463
5950-00-864-7688INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
11191
4730-01-004-8346INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
1537
1420-01-179-8327INTERCHANGEABLE
HEATER ASSEMBLY
11191
4820-01-191-4187INTERCHANGEABLE
RETAINER,SEAT,VALVE
5340-01-193-9571INTERCHANGEABLE
CLAMP,LOOP
NH1010750-10
6240-01-295-5159INTERCHANGEABLE
LAMP,INCANDESCENT
11191
4730-01-312-5113INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
1119-1
5310-01-519-8103INTERCHANGEABLE
WASHER,BEVEL
11-191

Frequently Asked Questions

What is NSN 4820-00-403-5641?

NSN 4820-00-403-5641 is a Disk,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 4820-00-403-5641?

NSN 4820-00-403-5641 has 5 cross-referenced part numbers: PNS101-1PC4 (Leslie Controls, Inc. Dba Leslie Controls Inc), PNS120-1PC4 (Leslie Controls, Inc. Dba Leslie Controls Inc), 11191 (Lineta Engineering Und Handelsgesell-Schaft Mbh), N11191 (Leslie Controls, Inc. Dba Leslie Controls Inc), 11191 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-00-403-5641?

There are 12 known substitutes for 4820-00-403-5641: 1680-00-091-2404, 5330-00-297-4520, 4330-00-420-7557 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N11191?

Key specifications for N11191: Flange Seat to Disk End Height: 2.375 INCHES NOMINAL IN; Shank Diameter: 0.424 INCHES NOMINAL IN; Under Flange Height: 1.188 INCHES NOMINAL IN; Material: STEEL. 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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