PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E-3962-23Pump,rotary

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 4320-01-074-3112 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-074-3112 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-074-3112. Primary manufacturer part number: E-3962-23.
Features
  • Pump,rotary — FSC 4320
  • 6 verified cross-references
  • Primary manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump,rotary, cataloged under National Stock Number 4320-01-074-3112, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NamePump,rotary
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersThe Gorman-Rupp Company Div Gorman-Rupp (CAGE 25567); Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524)
Technical Specifications
ParameterValue
NSN4320-01-074-3112
Primary Part NumberE-3962-23
Item NamePump,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3120-00-213-0833 INTERCHANGEABLE
Bearing,sleeve
4320-00-760-034146442-504 INTERCHANGEABLE
Valve Deck Assembly
The Gorman-Rupp Company Div Gorman-Rupp
4320-01-043-8171E-3962K INTERCHANGEABLE
Pump,centrifugal
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3040-01-163-8555210118 INTERCHANGEABLE
Shaft,straight
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4320-01-195-6138020480 INTERCHANGEABLE
Housing,liquid Pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
5340-01-205-9406700438 INTERCHANGEABLE
Bracket,wall,pump
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4320-01-281-4395PAB 414NFB 1 1/2 INTERCHANGEABLE
Pump,rotary
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4320-01-390-4861 INTERCHANGEABLE
Pump,rotary
4320-01-549-9628E-3962-26 INTERCHANGEABLE
Pump,reciprocating
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
4930-01-675-7239 INTERCHANGEABLE
Dispensing Pump,hand Driven
Cross-Reference Index
Part NumberManufacturer
46442-504 The Gorman-Rupp Company Div Gorman-Rupp (USA)
E-3962-1IN Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
PAB414NFC-1 1/4 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-3962 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
PAB414NFC1 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-3962-23 PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
3120-00-213-0833INTERCHANGEABLE
BEARING,SLEEVE
4320-00-760-0341INTERCHANGEABLE
VALVE DECK ASSEMBLY
46442-504
4320-01-043-8171INTERCHANGEABLE
PUMP,CENTRIFUGAL
E-3962K
3040-01-163-8555INTERCHANGEABLE
SHAFT,STRAIGHT
210118
4320-01-195-6138INTERCHANGEABLE
HOUSING,LIQUID PUMP
020480
5340-01-205-9406INTERCHANGEABLE
BRACKET,WALL,PUMP
700438
4320-01-281-4395INTERCHANGEABLE
PUMP,ROTARY
PAB 414NFB 1 1/2
4320-01-390-4861INTERCHANGEABLE
PUMP,ROTARY
4320-01-549-9628INTERCHANGEABLE
PUMP,RECIPROCATING
E-3962-26
4930-01-675-7239INTERCHANGEABLE
DISPENSING PUMP,HAND DRIVEN

Frequently Asked Questions

What is NSN 4320-01-074-3112?

NSN 4320-01-074-3112 is a Pump,rotary, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-01-074-3112?

NSN 4320-01-074-3112 has 6 cross-referenced part numbers: 46442-504 (The Gorman-Rupp Company Div Gorman-Rupp), E-3962-1IN (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), PAB414NFC-1 1/4 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-3962 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), PAB414NFC1 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer) and 1 more.

What NSN replaces 4320-01-074-3112?

There are 10 known substitutes for 4320-01-074-3112: 3120-00-213-0833, 4320-00-760-0341, 4320-01-043-8171 and 7 more. Verify interchangeability with system specifications before substitution.

Is NSN 4320-01-074-3112 still in active supply?

NSN 4320-01-074-3112 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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