PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21948NGovernor,pump,pressure Regulatin

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4320-00-023-6259 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-023-6259 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-023-6259. Primary manufacturer part number: 21948N.
Features
  • Governor,pump,pressure Regulatin — FSC 4320
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED IN REPLY TO PAC AXAE
  • End Connection Similarity: IDENTICAL
  • Inlet Working Pressure Rating at Maximum Temp: 600 PSI RATED STEAM WP AT 700 DEG F DEGF
  • Flange Bolt Hole Spacing: EQUALLY SPACED ON 5-7/8 IN. DIA BOLT CIRCLE IN
  • Flange Outside Diameter: 7.500 INCHES NOMINAL IN
  • Pipe/tube Nominal Size: 2-1/2 IN. PIPE IN
  • Flange Bolt Hole Quantity: 8
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 4320-00-023-6259, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-023-6259
Primary Part Number21948N
Item NameGovernor,pump,pressure Regulatin
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED IN REPLY TO PAC AXAE
End Connection SimilarityIDENTICAL
Inlet Working Pressure Rating at Maximum Temp600 PSI RATED STEAM WP AT 700 DEG F DEGF
Flange Bolt Hole SpacingEQUALLY SPACED ON 5-7/8 IN. DIA BOLT CIRCLE IN
Flange Outside Diameter7.500 INCHES NOMINAL IN
Pipe/tube Nominal Size2-1/2 IN. PIPE IN
Flange Bolt Hole Quantity8
Size2.500 INCHES IN
Departure From Cited DocumentAS MODIFIED BY PAC AXAG
Flange Bolt Hole Diameter0.875 INCHES NOMINAL IN
Pressure TypeCONSTANT
Nondefinitive Spec/std DataCP TYPE AND 1 CLASS AND 600 SERIES AND 2-1/2 SIZE
Angle Body FeatureNOT INCLUDED
Flange Raised Face FeatureINCLUDED
Saturated Steam Capacity Rating13500.0 POUNDS PER HOUR LBS
MaterialSTEEL BODY
Actuating Fluid Pressure Range+350.0 TO 1150.0 POUNDS PER SQUARE INCH LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4320-00-023-6279 INTERCHANGEABLE
Governor,pump,pressure Regulatin
4320-00-023-6280 INTERCHANGEABLE
Governor,pump,pressure Regulatin
4320-00-141-015921886N1 1-4IN INTERCHANGEABLE
Governor,pump,pressure Regulatin
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-247-7683Y501782203 INTERCHANGEABLE
Valve,flow Control
Leslie Controls, Inc. Dba Leslie Controls Inc
4320-00-935-5568 INTERCHANGEABLE
Governor,pump,pressure Regulatin
Cross-Reference Index
Part NumberManufacturer
21948N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
21948N21-2IN 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
Related Parts
4320-00-023-6279INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
4320-00-023-6280INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
4320-00-141-0159INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
21886N1 1-4IN
4820-00-247-7683INTERCHANGEABLE
VALVE,FLOW CONTROL
Y501782203
4320-00-935-5568INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN

Frequently Asked Questions

What is NSN 4320-00-023-6259?

NSN 4320-00-023-6259 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 4320-00-023-6259?

NSN 4320-00-023-6259 has 3 cross-referenced part numbers: 21948N (Leslie Controls, Inc. Dba Leslie Controls Inc), 21948N21-2IN (Leslie Controls, Inc. Dba Leslie Controls Inc), MILG18916 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4320-00-023-6259?

There are 5 known substitutes for 4320-00-023-6259: 4320-00-023-6279, 4320-00-023-6280, 4320-00-141-0159 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21948N?

Key specifications for 21948N: Reference Number Differentiating Characteristics: AS DIFFERENTIATED IN REPLY TO PAC AXAE; End Connection Similarity: IDENTICAL; Inlet Working Pressure Rating at Maximum Temp: 600 PSI RATED STEAM WP AT 700 DEG F DEGF; Flange Bolt Hole Spacing: EQUALLY SPACED ON 5-7/8 IN. DIA BOLT CIRCLE IN. 17 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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