PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NB33034879Diaphragm,valve,flat

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-165-9668 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-165-9668 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-165-9668. Primary manufacturer part number: NB33034879.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Hole Diameter: 0.344 INCHES NOMINAL IN
  • Temp Rating: 180.0 FAHRENHEIT NOMINAL DEGF
  • Media for Which Designed: WATER
  • Material Thickness: 0.125 INCHES NOMINAL IN
  • Outside Diameter: 6.000 INCHES NOMINAL IN
  • Center Hole Diameter: 0.625 INCHES NOMINAL IN
  • Style Designator: FLAT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-165-9668, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-165-9668
Primary Part NumberNB33034879
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusCANCELLED
Hole Diameter0.344 INCHES NOMINAL IN
Temp Rating180.0 FAHRENHEIT NOMINAL DEGF
Media for Which DesignedWATER
Material Thickness0.125 INCHES NOMINAL IN
Outside Diameter6.000 INCHES NOMINAL IN
Center Hole Diameter0.625 INCHES NOMINAL IN
Style DesignatorFLAT
Bolt Circle Diameter5.375 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC
Bolt Hole Quantity8
Pressure Rating250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5945-00-048-7548271-11023P1 INTERCHANGEABLE
Relay,thermal
Raytheon Company Dba Raytheon Co
7050-00-145-99184913316-46 INTERCHANGEABLE
Duplex Overload
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
5910-00-435-6485101182 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Astronics Test Systems Inc
5945-00-655-1484681724-3 INTERCHANGEABLE
Relay,thermal
Lockheed Martin Corporation Div Rms - Mitchel Field
5910-00-666-761910525660-2 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5945-00-698-7532681724-1 INTERCHANGEABLE
Relay,thermal
Lockheed Martin Corporation Div Rms - Mitchel Field
5945-01-151-11426957ED14-26 INTERCHANGEABLE
Relay,thermal
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
4820-01-171-6702ASTM-F1370-2HU2B INTERCHANGEABLE
Valve,regulating,fluid Pressure
American Society for Testing and Materials Dba Astm International
5945-01-198-63326957ED14-12 INTERCHANGEABLE
Relay,thermal
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
4330-01-431-6621X6175 INTERCHANGEABLE
Pneumatic Muffler,exhaust-Intake
Porex Technologies Corp
Cross-Reference Index
Part NumberManufacturer
22220-79 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N552 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
NB33034879 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
330348-79 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N-750 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N-750 PC 7 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N669XN552 ITEM 7 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N669 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N669 ITEM 7 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5945-00-048-7548INTERCHANGEABLE
RELAY,THERMAL
271-11023P1
7050-00-145-9918INTERCHANGEABLE
DUPLEX OVERLOAD
4913316-46
5910-00-435-6485INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
101182
5945-00-655-1484INTERCHANGEABLE
RELAY,THERMAL
681724-3
5910-00-666-7619INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
10525660-2
5945-00-698-7532INTERCHANGEABLE
RELAY,THERMAL
681724-1
5945-01-151-1142INTERCHANGEABLE
RELAY,THERMAL
6957ED14-26
4820-01-171-6702INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
ASTM-F1370-2HU2B
5945-01-198-6332INTERCHANGEABLE
RELAY,THERMAL
6957ED14-12
4330-01-431-6621INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE
X6175

Frequently Asked Questions

What is NSN 4820-01-165-9668?

NSN 4820-01-165-9668 is a Diaphragm,valve,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-165-9668?

NSN 4820-01-165-9668 has 9 cross-referenced part numbers: 22220-79 (Leslie Controls, Inc. Dba Leslie Controls Inc), N552 (Leslie Controls, Inc. Dba Leslie Controls Inc), NB33034879 (Leslie Controls, Inc. Dba Leslie Controls Inc), 330348-79 (Leslie Controls, Inc. Dba Leslie Controls Inc), N-750 (Leslie Controls, Inc. Dba Leslie Controls Inc) and 4 more.

What NSN replaces 4820-01-165-9668?

There are 10 known substitutes for 4820-01-165-9668: 5945-00-048-7548, 7050-00-145-9918, 5910-00-435-6485 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NB33034879?

Key specifications for NB33034879: Hole Diameter: 0.344 INCHES NOMINAL IN; Temp Rating: 180.0 FAHRENHEIT NOMINAL DEGF; Media for Which Designed: WATER; Material Thickness: 0.125 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-165-9668 still in active supply?

NSN 4820-01-165-9668 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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