PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34-81-25Ring,control,fluid Flow

Alfa Laval Inc. · NSN 4330-00-264-0787 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-00-264-0787 — this item is cataloged by the U.S. Government under National Stock Number 4330-00-264-0787. Primary manufacturer part number: 34-81-25.
Features
  • Ring,control,fluid Flow — FSC 4330
  • General Characteristics Item Description: STAINLESS STEEL AISI 316; 1.406 IN. ID; 1.932 IN. OD; 0.094 IN. THK IN
  • 13 verified cross-references
  • Primary manufacturer: Alfa Laval Inc.
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,control,fluid Flow, cataloged under National Stock Number 4330-00-264-0787, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Alfa Laval Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4330-00-264-0787
Primary Part Number34-81-25
Item NameRing,control,fluid Flow
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerAlfa Laval Inc.
StatusACTIVE
General Characteristics Item DescriptionSTAINLESS STEEL AISI 316; 1.406 IN. ID; 1.932 IN. OD; 0.094 IN. THK IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6640-00-110-9102 INTERCHANGEABLE
Centrifuge,laboratory
5120-00-213-04609913425 INTERCHANGEABLE
Drift
Alfa Laval Inc
4730-00-265-6905 INTERCHANGEABLE
Nipple,pipe
6625-00-275-1775 INTERCHANGEABLE
Reference Standard
3120-00-294-0139348125 INTERCHANGEABLE
Bearing,sleeve
Lockheed Martin Corp
3940-00-294-33883425 INTERCHANGEABLE
Adapter,hoisting
Allison Transmission Inc Dba Allison Transmission, Inc
5935-00-501-7357922097-2 INTERCHANGEABLE
Connector,receptacle,electrical
Raytheon Company Dba Raytheon
5340-00-754-45603425-00000 INTERCHANGEABLE
Shield,expansion
Star Expansion Co
6610-01-025-82813425 INTERCHANGEABLE
Tube Screw Assembly
Kearflex Engineering Company
6685-01-069-9177349004007 INTERCHANGEABLE
Thermometer,self-Indicating
Alnor Instrument Company
Cross-Reference Index
Part NumberManufacturer
34-81-25 Alfa Laval Inc. (USA)
NN12PC34SZ25 Alfa Laval Inc. (USA)
3N20-2PC34SZ25 Alfa Laval Inc. (USA)
3N50PC34SZ25 Alfa Laval Inc. (USA)
AA122-25-3 Alfa Laval Inc. (USA)
3N48ALT6PC34SZ25 Alfa Laval Inc. (USA)
3N30PC34SZ25 Alfa Laval Inc. (USA)
34-8Y25 Alfa Laval Inc. (USA)
NN24-2PC34SZ25 Alfa Laval Inc. (USA)
AC13135-25 Alfa Laval Inc. (USA)
34-25 Alfa Laval Inc. (USA)
NN11-17PC34SZ25 Alfa Laval Inc. (USA)
3N101PC34SZ25 Alfa Laval Inc. (USA)
Related Parts
6640-00-110-9102INTERCHANGEABLE
CENTRIFUGE,LABORATORY
5120-00-213-0460INTERCHANGEABLE
DRIFT
9913425
4730-00-265-6905INTERCHANGEABLE
NIPPLE,PIPE
6625-00-275-1775INTERCHANGEABLE
REFERENCE STANDARD
3120-00-294-0139INTERCHANGEABLE
BEARING,SLEEVE
348125
3940-00-294-3388INTERCHANGEABLE
ADAPTER,HOISTING
3425
5935-00-501-7357INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
922097-2
5340-00-754-4560INTERCHANGEABLE
SHIELD,EXPANSION
3425-00000
6610-01-025-8281INTERCHANGEABLE
TUBE SCREW ASSEMBLY
3425
6685-01-069-9177INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
349004007
5935-01-105-1684INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
7408C
5998-01-300-7830INTERCHANGEABLE
EXTRACTOR,ELECTRICAL CARD
3425

Frequently Asked Questions

What is NSN 4330-00-264-0787?

NSN 4330-00-264-0787 is a Ring,control,fluid Flow, manufactured by Alfa Laval Inc., classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-00-264-0787?

NSN 4330-00-264-0787 has 13 cross-referenced part numbers: 34-81-25 (Alfa Laval Inc.), NN12PC34SZ25 (Alfa Laval Inc.), 3N20-2PC34SZ25 (Alfa Laval Inc.), 3N50PC34SZ25 (Alfa Laval Inc.), AA122-25-3 (Alfa Laval Inc.) and 8 more.

What NSN replaces 4330-00-264-0787?

There are 12 known substitutes for 4330-00-264-0787: 6640-00-110-9102, 5120-00-213-0460, 4730-00-265-6905 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34-81-25?

Key specifications for 34-81-25: General Characteristics Item Description: STAINLESS STEEL AISI 316; 1.406 IN. ID; 1.932 IN. OD; 0.094 IN. THK IN. 1 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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