PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B78Filter,air,diving Apparatus

Bauer Compressors, Inc. · NSN 4220-01-693-1873 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-693-1873 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-693-1873. Primary manufacturer part number: B78.
Features
  • Filter,air,diving Apparatus — FSC 4220
  • 1 verified cross-reference
  • Primary manufacturer: Bauer Compressors, Inc.
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,air,diving Apparatus, cataloged under National Stock Number 4220-01-693-1873, is classified within Federal Supply Class 4220 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Bauer Compressors, Inc.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-693-1873
Primary Part NumberB78
Item NameFilter,air,diving Apparatus
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerBauer Compressors, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-227-4710MS17131-11 INTERCHANGEABLE
Bearing,roller,needle
American Society for Testing and Materials Dba Astm International
4920-00-445-7349B78 INTERCHANGEABLE
Test Stand,g Accelo
Genisco Technology Corporation
3030-00-540-9513 INTERCHANGEABLE
Belt,v
Cross-Reference Index
Part NumberManufacturer
B78 PRIMARY Bauer Compressors, Inc. (USA)
Related Parts
3110-00-227-4710INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MS17131-11
4920-00-445-7349INTERCHANGEABLE
TEST STAND,G ACCELO
B78
3030-00-540-9513INTERCHANGEABLE
BELT,V

Frequently Asked Questions

What is NSN 4220-01-693-1873?

NSN 4220-01-693-1873 is a Filter,air,diving Apparatus, manufactured by Bauer Compressors, Inc., classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-693-1873?

NSN 4220-01-693-1873 has 1 cross-referenced part number: B78 (Bauer Compressors, Inc.).

What NSN replaces 4220-01-693-1873?

There are 3 known substitutes for 4220-01-693-1873: 3110-00-227-4710, 4920-00-445-7349, 3030-00-540-9513. Verify interchangeability with system specifications before substitution.

What are the specifications of B78?

Key specifications for B78: Part Name Assigned by Controlling Agency: FILTER SYSTEM; Special Features: DIVING SYSTEM. 2 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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