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1B7191 — LINER,FAN COMPONENT,AIRCRAFT GAS

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1B7191: LINER,FAN COMPONENT,AIRCRAFT GAS.

LINER,FAN COMPONENT,AIRCRAFT GAS. Key specifications include usage_design: TO COOL ENGINE WATER, overall_height: 2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN, mounting_method: FLANGE, thermostat_type: BELLOWS, flow_control_device: CHOKE, opening_temp_rating: 157.0 FAHRENHEIT NOMINAL DEGF. This part is cataloged in the U.S.

Government catalog under NSN 6685-00-452-6120, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1B7191
NSN: 6685-00-452-6120
NIINs: 004526120, 014075127
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
usage_designTO COOL ENGINE WATER
overall_height2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
mounting_methodFLANGE
thermostat_typeBELLOWS
flow_control_deviceCHOKE
opening_temp_rating157.0 FAHRENHEIT NOMINAL DEGF
valve_travel_distance0.313 INCHES MINIMUM IN
largest_outside_diameter2.547 INCHES MINIMUM AND 2.552 INCHES MAXIMUM IN
spring_operated_pressure_reliefNOT PROVIDED
NSN6685-00-452-6120
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LINER,FAN COMPONENT,AIRCRAFT GAS TITLE COMPONENT PN 1B7191 MFR LINER,FAN COMPONENT,AI
KEY FEATURES
•
FLOW CONTROL DEVICE: CHOKE
•
SPRING OPERATED PRESSURE RELIEF: NOT PROVIDED
•
LARGEST OUTSIDE DIAMETER: 2.547 INCHES MINIMUM AND 2.552 INCHES MAXIMUM IN
•
MOUNTING METHOD: FLANGE
•
VALVE TRAVEL DISTANCE: 0.313 INCHES MINIMUM IN
•
THERMOSTAT TYPE: BELLOWS
•
USAGE DESIGN: TO COOL ENGINE WATER
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICECHOKE
OVERALL HEIGHT2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
SPRING OPERATED PRESSURE RELIEFNOT PROVIDED
LARGEST OUTSIDE DIAMETER2.547 INCHES MINIMUM AND 2.552 INCHES MAXIMUM IN
MOUNTING METHODFLANGE
VALVE TRAVEL DISTANCE0.313 INCHES MINIMUM IN
THERMOSTAT TYPEBELLOWS
USAGE DESIGNTO COOL ENGINE WATER
OPENING TEMP RATING157.0 FAHRENHEIT NOMINAL DEGF
SUBSTITUTES & CROSS-REFERENCES 10
BB17815Reference document
Same NSN cross-reference
Reference document — Secondary reference
867040Reference document
Same NSN cross-reference
Reference document — Secondary reference
158AReference document
Same NSN cross-reference
Reference document — Secondary reference
3126550Reference document
Same NSN cross-reference
Reference document — Secondary reference
854745Reference document
Same NSN cross-reference
Reference document — Secondary reference
16Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B7191?
1B7191 is a LINER,FAN COMPONENT,AIRCRAFT GAS.
What parts can replace 1B7191?
There are 10 known substitutes for 1B7191: BB17815, 867040, 158A and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B7191?
1B7191 is cataloged in the U.S. Government catalog under NSN 6685-00-452-6120. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.