PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3221Valve Plate,hydraulic Motor-Pump

DP Manufacturing Inc. · NSN 4320-01-218-2731 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-218-2731 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-218-2731. Primary manufacturer part number: 3221.
Features
  • Valve Plate,hydraulic Motor-Pump — FSC 4320
  • Motor-Pump Design Control Activity: 96151
  • 3 verified cross-references
  • Primary manufacturer: DP Manufacturing Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve Plate,hydraulic Motor-Pump, cataloged under National Stock Number 4320-01-218-2731, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is DP Manufacturing Inc.. Government technical data includes 1 verified specification, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4320-01-218-2731
Primary Part Number3221
Item NameValve Plate,hydraulic Motor-Pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerDP Manufacturing Inc.
StatusCANCELLED
Motor-Pump Design Control Activity96151
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3030-00-067-9698187L100 INTERCHANGEABLE
Belt,positive Drive
Emerson Electric Co Browning Mfg Div
3110-00-144-8953 INTERCHANGEABLE
Bearing,ball,annular
6145-00-171-0821 INTERCHANGEABLE
Cable,special Purpose,electrical
6625-00-230-63883221 INTERCHANGEABLE
Adapter,test
Fluke Electronics Corp
4330-00-369-3603AC365 INTERCHANGEABLE
Rod,cleaning
Alfa Laval Inc
5340-00-476-51558432 INTERCHANGEABLE
Standoff,threaded,spacing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5935-00-629-812032-21 INTERCHANGEABLE
Connector,plug,electrical
Te Connectivity Corporation Dba Microdot Products
6605-00-688-99843221 INTERCHANGEABLE
Control,underwater Log
Lockheed Martin Corporation Div Rms
5935-00-689-66773221 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5960-00-761-3347 INTERCHANGEABLE
Electron Tube
Cross-Reference Index
Part NumberManufacturer
3221 DP Mfg Inc (USA)
3221 PRIMARY DP Manufacturing Inc. (USA)
8432 PRIMARY Eaton Corporation Div Eaton Fluid Power (USA)
Related Parts
3030-00-067-9698INTERCHANGEABLE
BELT,POSITIVE DRIVE
187L100
3110-00-144-8953INTERCHANGEABLE
BEARING,BALL,ANNULAR
6145-00-171-0821INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
6625-00-230-6388INTERCHANGEABLE
ADAPTER,TEST
3221
4330-00-369-3603INTERCHANGEABLE
ROD,CLEANING
AC365
5340-00-476-5155INTERCHANGEABLE
STANDOFF,THREADED,SPACING
8432
5935-00-629-8120INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
32-21
6605-00-688-9984INTERCHANGEABLE
CONTROL,UNDERWATER LOG
3221
5935-00-689-6677INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3221
5960-00-761-3347INTERCHANGEABLE
ELECTRON TUBE
6515-01-059-4460INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM
3221
5915-01-369-0712INTERCHANGEABLE
FILTER,HIGH PASS
3221-1

Frequently Asked Questions

What is NSN 4320-01-218-2731?

NSN 4320-01-218-2731 is a Valve Plate,hydraulic Motor-Pump, manufactured by DP Manufacturing Inc., classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-01-218-2731?

NSN 4320-01-218-2731 has 3 cross-referenced part numbers: 3221 (DP Mfg Inc), 3221 (DP Manufacturing Inc.), 8432 (Eaton Corporation Div Eaton Fluid Power).

What NSN replaces 4320-01-218-2731?

There are 12 known substitutes for 4320-01-218-2731: 3030-00-067-9698, 3110-00-144-8953, 6145-00-171-0821 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3221?

Key specifications for 3221: Motor-Pump Design Control Activity: 96151. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4320-01-218-2731 still in active supply?

NSN 4320-01-218-2731 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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