PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21742NGovernor,pump,pressure Regulatin

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4320-00-023-6280 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-023-6280 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-023-6280. Primary manufacturer part number: 21742N.
Features
  • Governor,pump,pressure Regulatin — FSC 4320
  • Pipe/tube Nominal Size: 1-1/4 IN. PIPE IN
  • Flange Outside Diameter: 5.250 INCHES NOMINAL IN
  • Actuating Fluid Pressure Range: +50.0 TO 175.0 POUNDS PER SQUARE INCH LBS
  • Flange Bolt Hole Diameter: 0.750 INCHES NOMINAL IN
  • Flange Raised Face Feature: INCLUDED
  • Nondefinitive Spec/std Data: CP TYPE AND 1 CLASS AND 600 SERIES AND 1 SIZE
  • Angle Body Feature: NOT INCLUDED
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Steel Body construction
General Description

The Governor,pump,pressure Regulatin, cataloged under National Stock Number 4320-00-023-6280, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN4320-00-023-6280
Primary Part Number21742N
Item NameGovernor,pump,pressure Regulatin
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Pipe/tube Nominal Size1-1/4 IN. PIPE IN
Flange Outside Diameter5.250 INCHES NOMINAL IN
Actuating Fluid Pressure Range+50.0 TO 175.0 POUNDS PER SQUARE INCH LBS
Flange Bolt Hole Diameter0.750 INCHES NOMINAL IN
Flange Raised Face FeatureINCLUDED
Nondefinitive Spec/std DataCP TYPE AND 1 CLASS AND 600 SERIES AND 1 SIZE
Angle Body FeatureNOT INCLUDED
Inlet Working Pressure Rating at Maximum Temp600 PSI RATED STEAM WP AT 700 DEG F DEGF
Pressure TypeCONSTANT
Flange Bolt Hole SpacingEQUALLY SPACED ON 3-7/8 IN. DIA BOLT CIRCLE IN
Flange Bolt Hole Quantity4
Size1.250 INCHES IN
Departure From Cited DesignatorAS MODIFIED BY PAC AXAG
MaterialSTEEL BODY
End Connection SimilarityIDENTICAL
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED IN REPLY TO PAC AXAE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4320-00-023-6259 INTERCHANGEABLE
Governor,pump,pressure Regulatin
4320-00-023-6279 INTERCHANGEABLE
Governor,pump,pressure Regulatin
4820-00-036-1537N116450058 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4320-00-141-015921886N1 1-4IN INTERCHANGEABLE
Governor,pump,pressure Regulatin
Leslie Controls, Inc. Dba Leslie Controls Inc
4320-00-873-8986 INTERCHANGEABLE
Governor,pump,pressure Regulatin
4820-01-226-7578Y501827504 INTERCHANGEABLE
Valve,flow Control
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-231-7089N53826 INTERCHANGEABLE
Adjusting Screw,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
21742N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
MILG18916 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
21742N Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
Related Parts
4320-00-023-6259INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
4320-00-023-6279INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
4820-00-036-1537INTERCHANGEABLE
DISK,VALVE
N116450058
4320-00-141-0159INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
21886N1 1-4IN
4320-00-873-8986INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
4820-01-226-7578INTERCHANGEABLE
VALVE,FLOW CONTROL
Y501827504
4820-01-231-7089INTERCHANGEABLE
ADJUSTING SCREW,VALVE
N53826

Frequently Asked Questions

What is NSN 4320-00-023-6280?

NSN 4320-00-023-6280 is a Governor,pump,pressure Regulatin, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-023-6280?

NSN 4320-00-023-6280 has 3 cross-referenced part numbers: 21742N (Leslie Controls, Inc. Dba Leslie Controls Inc), MILG18916 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 21742N (Lineta Engineering Und Handelsgesell-Schaft Mbh).

What NSN replaces 4320-00-023-6280?

There are 7 known substitutes for 4320-00-023-6280: 4320-00-023-6259, 4320-00-023-6279, 4820-00-036-1537 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21742N?

Key specifications for 21742N: Pipe/tube Nominal Size: 1-1/4 IN. PIPE IN; Flange Outside Diameter: 5.250 INCHES NOMINAL IN; Actuating Fluid Pressure Range: +50.0 TO 175.0 POUNDS PER SQUARE INCH LBS; Flange Bolt Hole Diameter: 0.750 INCHES NOMINAL IN. 16 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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