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Technical Data Sheet
128SCSEA551 ✓ 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

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include phase: SINGLE, material: ALUMINUM BODY, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL(BOSS) SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-056-8279, 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
128SCSEA551
NSN: 4810-01-056-8279
FSC: 4810
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
phaseSINGLE
materialALUMINUM BODY
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL(BOSS) SECOND END
style_designatorCROSS
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL OR VERTICAL
frequency_in_hertz400.0
flow_control_devicePOPPET
nominal_thread_size0.438 INCHES SECOND END IN
NSN4810-01-056-8279
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 128SCSEA551 · 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
CONNECTION STYLE: GASKET SEAL(BOSS) SECOND END
CURRENT RATING IN AMPS: 0.750
MOUNTING POSITION: HORIZONTAL OR VERTICAL
VOLTAGE IN VOLTS AND CURRENT TYPE: 115.0 AC
STYLE DESIGNATOR: CROSS
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
THREAD CLASS: 3A FIRST END A
MATERIAL: ALUMINUM BODY
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEGASKET SEAL(BOSS) SECOND END
CURRENT RATING IN AMPS0.750
MOUNTING POSITIONHORIZONTAL OR VERTICAL
VOLTAGE IN VOLTS AND CURRENT TYPE115.0 AC
STYLE DESIGNATORCROSS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
THREAD CLASS3A FIRST END A
MATERIALALUMINUM BODY
SEAT ANGLE37.0 DEGREES FIRST END
FLOW CONTROL DEVICEPOPPET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
X13073Interchangeable
interchangeable cross-reference
interchangeable
15BC02Interchangeable
interchangeable cross-reference
interchangeable
10-16666Interchangeable
interchangeable cross-reference
interchangeable
BB5211Interchangeable
interchangeable cross-reference
interchangeable
7038X1CInterchangeable
interchangeable cross-reference
interchangeable
B94.9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 128SCSEA551?
128SCSEA551 is a BEARING,BALL,ANNULAR.
What parts can replace 128SCSEA551?
There are 11 known substitutes for 128SCSEA551: X13073, 15BC02, 10-16666 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 128SCSEA551?
128SCSEA551 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-056-8279. This indicates validated use in U.S. government and defense supply chains.
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