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Technical Data Sheet
PartsTable / COMPONENT / 139263
139263 ✓ 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

The VALVE-CHECK is a the manufacturer industrial component. Key specifications include material: CORK OVERALL, peripheral_diameter: 1.939 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN, center_hole_diameter: 1.313 INCHES NOMINAL IN, cross-sectional_height: 0.250 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 2810-00-479-2492, 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
139263
NSN: 2810-00-479-2492
FSC: 2810
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialCORK OVERALL
peripheral_diameter1.939 INCHES MINIMUM AND 1.944 INCHES MAXIMUM IN
center_hole_diameter1.313 INCHES NOMINAL IN
cross-sectional_height0.250 INCHES NOMINAL IN
NSN2810-00-479-2492
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE-CHECK TITLE COMPONENT PN 139263 MFR VALVE-CHECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
139268Interchangeable
interchangeable cross-reference
interchangeable
1021-335Interchangeable
interchangeable cross-reference
interchangeable
18626Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 139263?
139263 is a VALVE-CHECK.
What parts can replace 139263?
There are 3 known substitutes for 139263: 139268, 1021-335, 18626. Substitute compatibility should be verified for your specific system.
What is the NSN for 139263?
139263 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2810-00-479-2492. 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