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Technical Data Sheet
PartsTable / COMPONENT / YE4
YE4 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

HUMIDIFIER,WARM AIR HEATING SYST. Key specifications include material: STEEL BULB, bulb_type: FLEXIBLE CAPILLARY, case_type: DUSTPROOF AND VAPORPROOF, bulb_style: PLAIN BULB W/BENDABLE EXTENSION, scale_type: CONCENTRIC DIAL, case_diameter: 2.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4520-00-103-1010, 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
YE4
NSN: 4520-00-103-1010
FSC: 4520
CAGE: 03933 — ARMSTRONG INTERNATIONAL INC DBA ARMSTRONG MACHINE WORKS (USA)
SPECIFICATIONS
materialSTEEL BULB
bulb_typeFLEXIBLE CAPILLARY
case_typeDUSTPROOF AND VAPORPROOF
bulb_stylePLAIN BULB W/BENDABLE EXTENSION
scale_typeCONCENTRIC DIAL
bulb_quantity1
case_diameter2.250 INCHES NOMINAL IN
dial_diameter2.000 INCHES NOMINAL IN
bulb_tip_length1.063 INCHES NOMINAL IN
actuating_mediumMETHYL CHLORIDE
style_designatorBULB W/O SOCKET
bulb_overall_length1.688 INCHES NOMINAL IN
NSN4520-00-103-1010
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HUMIDIFIER,WARM AIR HEATING SYST TITLE COMPONENT PN YE4 MFR HUMIDIFIER,WARM AIR HE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: A HUMIDIFICATION SYSTEM;240 V,60 H,SINGLE PHASE,4000 W;ELECTRICALLY HEATED;MOISTURE OUTPUT 1.5 GAL/HR;AREA HUMIDISTAT;SAFETY CUT-OUT SWITCH;AUTOMATIC OPERATION;AUTOMATIC CONTROL V
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONA HUMIDIFICATION SYSTEM;240 V,60 H,SINGLE PHASE,4000 W;ELECTRICALLY HEATED;MOISTURE OUTPUT 1.5 GAL/HR;AREA HUMIDISTAT;SAFETY CUT-OUT SWITCH;AUTOMATIC OPERATION;AUTOMATIC CONTROL V
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
YE4Interchangeable
interchangeable cross-reference
interchangeable
95246-108Interchangeable
interchangeable cross-reference
interchangeable
IP2100-00123Interchangeable
interchangeable cross-reference
interchangeable
TFF404Interchangeable
interchangeable cross-reference
interchangeable
FE4Interchangeable
interchangeable cross-reference
interchangeable
FB94Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is YE4?
YE4 is a HUMIDIFIER,WARM AIR HEATING SYST.
What parts can replace YE4?
There are 9 known substitutes for YE4: YE4, 95246-108, IP2100-00123 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for YE4?
YE4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4520-00-103-1010. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026