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NCA128 ✓ 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 GUIDE,VALVE STEM is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 1.938 INCHES NOMINAL IN, bore_counterbore: NOT INCLUDED, outside_diameter: 3.370 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, bb_end_chamfer_length: 0.438 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 4820-00-969-2978, 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
NCA128
NSN: 4820-00-969-2978
FSC: 4820
CAGE: 82328 — DRESSER RAND CO TERRY CORP STEAM TURBINE MOTOR AND GENERATOR CO A JOINT VENTURE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length1.938 INCHES NOMINAL IN
bore_counterboreNOT INCLUDED
outside_diameter3.370 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
bb_end_chamfer_length0.438 INCHES NOMINAL IN
bb_end_shank_diameter1.500 INCHES NOMINAL IN
major_diameter_length0.500 INCHES NOMINAL IN
bb_end_chamfer_angle_in_deg45.0
NSN4820-00-969-2978
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NCA128 · 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
•
BB END CHAMFER ANGLE IN DEG: 45.0
•
MAJOR DIAMETER LENGTH: 0.500 INCHES NOMINAL IN
•
BORE COUNTERBORE: NOT INCLUDED
•
BB END SHANK DIAMETER: 1.500 INCHES NOMINAL IN
•
BB END CHAMFER LENGTH: 0.438 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL: STEEL CORROSION RESISTING
•
OUTSIDE DIAMETER: 3.370 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BB END CHAMFER ANGLE IN DEG45.0
MAJOR DIAMETER LENGTH0.500 INCHES NOMINAL IN
BORE COUNTERBORENOT INCLUDED
BB END SHANK DIAMETER1.500 INCHES NOMINAL IN
BB END CHAMFER LENGTH0.438 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
MATERIALSTEEL CORROSION RESISTING
OUTSIDE DIAMETER3.370 INCHES NOMINAL IN
OVERALL LENGTH1.938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
2803X518Interchangeable
interchangeable cross-reference
interchangeable
4NKB0553Interchangeable
interchangeable cross-reference
interchangeable
PL 753161 UNIT 2 PC NO 50Interchangeable
interchangeable cross-reference
interchangeable
36501-3Interchangeable
interchangeable cross-reference
interchangeable
35835Interchangeable
interchangeable cross-reference
interchangeable
NC4046Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NCA128?
NCA128 is a GUIDE,VALVE STEM.
What parts can replace NCA128?
There are 8 known substitutes for NCA128: 2803X518, 4NKB0553, PL 753161 UNIT 2 PC NO 50 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NCA128?
NCA128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-969-2978. 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