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BYLB939 — BYLB939

✓ Government record, cited
GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC · GATE VALVE
PRODUCT OVERVIEW

BYLB939: BYLB939.

The BYLB939 is a GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC industrial component. This part is cataloged in the U.S. Government catalog under NSN 4810-01-455-5019, 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
BYLB939
NSN: 4810-01-455-5019
FSC: 4810 — Valves, Powered
CAGE: 05624 — GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC (USA)
SPECIFICATIONS
Part NumberBYLB939
ManufacturerGE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC
NSN4810-01-455-5019
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: BYLB939 · GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONAIRCRAFT,AIRLIFTER C-17A A
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BYLB939?
BYLB939 is a BYLB939 manufactured by GE AVIATION SYSTEMS LLC DBA GE AVIATION SYSTEMS LLC.
What is the NSN for BYLB939?
BYLB939 is cataloged in the U.S. Government catalog under NSN 4810-01-455-5019. This indicates validated use in U.S. government and defense supply chains.
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