PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20RSBPump Unit,centrifugal

Itt Rule Industries Inc Danforth Div · NSN 4320-01-664-1188 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-664-1188 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-664-1188. Primary manufacturer part number: 20RSB.
Features
  • Pump Unit,centrifugal — FSC 4320
  • Current Type: DC
  • Maximum Discharge Flow Rate: 800.0 GALLONS PER MINUTE
  • Current Rating in Amps: 2.8
  • Voltage in Volts: 12.0
  • Features Provided: SUBMERSIBLE
  • Cooling Method: WATER COOLED
  • 2 verified cross-references
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-664-1188, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Itt Rule Industries Inc Danforth Div. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-664-1188
Primary Part Number20RSB
Item NamePump Unit,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerItt Rule Industries Inc Danforth Div
StatusACTIVE
Current TypeDC
Maximum Discharge Flow Rate800.0 GALLONS PER MINUTE
Current Rating in Amps2.8
Voltage in Volts12.0
Features ProvidedSUBMERSIBLE
Cooling MethodWATER COOLED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2640-00-158-5617938-696 INTERCHANGEABLE
Flap,inner Tube,pneumatic Tire
Specialty Tires & Wheels
5120-00-889-205020R INTERCHANGEABLE
Pliers,chain Wrench
Petersen Mfg Co Inc
4510-01-027-4739 INTERCHANGEABLE
Valve,float,water Closet Tank
4820-01-118-8490 INTERCHANGEABLE
Cap,valve
3040-01-294-863620-R INTERCHANGEABLE
Shaft,shouldered
Thermal Engineering Co a Div of Sea Kay Co Inc
5120-01-431-626120R INTERCHANGEABLE
Clamp,plier
Stanley Tools Div of Stanley Works
9905-01-461-775320-R INTERCHANGEABLE
Reflector,indicating,clearance
J. W. Speaker Corporation Dba Jw Speaker Corp
4820-01-690-1047 INTERCHANGEABLE
Cap,valve
Cross-Reference Index
Part NumberManufacturer
20RSB PRIMARY Itt Rule Industries Inc Danforth Div (USA)
20R Xylem Inc (USA)
Related Parts
2640-00-158-5617INTERCHANGEABLE
FLAP,INNER TUBE,PNEUMATIC TIRE
938-696
5120-00-889-2050INTERCHANGEABLE
PLIERS,CHAIN WRENCH
20R
4510-01-027-4739INTERCHANGEABLE
VALVE,FLOAT,WATER CLOSET TANK
4820-01-118-8490INTERCHANGEABLE
CAP,VALVE
3040-01-294-8636INTERCHANGEABLE
SHAFT,SHOULDERED
20-R
5120-01-431-6261INTERCHANGEABLE
CLAMP,PLIER
20R
9905-01-461-7753INTERCHANGEABLE
REFLECTOR,INDICATING,CLEARANCE
20-R
4820-01-690-1047INTERCHANGEABLE
CAP,VALVE

Frequently Asked Questions

What is NSN 4320-01-664-1188?

NSN 4320-01-664-1188 is a Pump Unit,centrifugal, manufactured by Itt Rule Industries Inc Danforth Div, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-664-1188?

NSN 4320-01-664-1188 has 2 cross-referenced part numbers: 20RSB (Itt Rule Industries Inc Danforth Div), 20R (Xylem Inc).

What NSN replaces 4320-01-664-1188?

There are 8 known substitutes for 4320-01-664-1188: 2640-00-158-5617, 5120-00-889-2050, 4510-01-027-4739 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20RSB?

Key specifications for 20RSB: End Item Identification: 29RBS GEN II HULL; Current Type: DC; Maximum Discharge Flow Rate: 800.0 GALLONS PER MINUTE; Current Rating in Amps: 2.8. 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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