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PartsTable / COMPONENT / 520-12477-2
520-12477-2 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

ACTUATOR,ELECTROMECHANICAL,ROTAR. Key specifications include body_height: 5.450 INCHES MAXIMUM IN, current_type: DC, special_features: INCLUDES POSITION POINTER, voltage_in_volts: 28.0, end_item_identification: B-52 AIRCRAFT, shaft_rotation_direction: CLOCKWISE AND COUNTERCLOCKWISE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-517-6878, 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
520-12477-2
NSN: 4810-01-517-6878
FSC: 4810
CAGE: 82918 — THE BOEING COMPANY DIV LEGACY WICHITA (USA)
SPECIFICATIONS
body_height5.450 INCHES MAXIMUM IN
current_typeDC
special_featuresINCLUDES POSITION POINTER
voltage_in_volts28.0
end_item_identificationB-52 AIRCRAFT
shaft_rotation_directionCLOCKWISE AND COUNTERCLOCKWISE
NSN4810-01-517-6878
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 520-12477-2 · OEM ⚠ 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
KEY FEATURES
•
CURRENT TYPE: DC
•
SHAFT ROTATION DIRECTION: CLOCKWISE AND COUNTERCLOCKWISE
•
VOLTAGE IN VOLTS: 28.0
•
BODY HEIGHT: 5.450 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONB-52 AIRCRAFT
CURRENT TYPEDC
SHAFT ROTATION DIRECTIONCLOCKWISE AND COUNTERCLOCKWISE
VOLTAGE IN VOLTS28.0
SPECIAL FEATURESINCLUDES POSITION POINTER
BODY HEIGHT5.450 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
6501-2Interchangeable
interchangeable cross-reference
interchangeable
C215351-2Interchangeable
interchangeable cross-reference
interchangeable
CH277Interchangeable
interchangeable cross-reference
interchangeable
3107860Interchangeable
interchangeable cross-reference
interchangeable
440259Interchangeable
interchangeable cross-reference
interchangeable
AD17544Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520-12477-2?
520-12477-2 is a ACTUATOR,ELECTROMECHANICAL,ROTAR.
What parts can replace 520-12477-2?
There are 14 known substitutes for 520-12477-2: 6501-2, C215351-2, CH277 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 520-12477-2?
520-12477-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-517-6878. 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