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Technical Data Sheet
PartsTable / COMPONENT / L2128
L2128 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_radius: 0.031 INCHES NOMINAL IN, flange_diameter: 1.002 INCHES NOMINAL IN, hardness_rating: 76.0 ROCKWELL A MINIMUM AND 78.5 ROCKWELL A MAXIMUM OVERALL, style_designator: PLAIN FLANGED, under_flange_height: 1.688 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-359-4537, 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
L2128
NSN: 4820-00-359-4537
FSC: 4820
CAGE: 75160 — DEERE & CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_radius0.031 INCHES NOMINAL IN
flange_diameter1.002 INCHES NOMINAL IN
hardness_rating76.0 ROCKWELL A MINIMUM AND 78.5 ROCKWELL A MAXIMUM OVERALL
special_featuresDRILL 0.500 IN. DIA HOLES 0.375 IN. DEEP AT 120 DEGREES 1.062 IN. FROM FLANGE HAS 0.312 IN. W BY 0.127 IN. DEEP GROOVE AROUND 0.125 IN. FROM TOP IN
style_designatorPLAIN FLANGED
under_flange_height1.688 INCHES NOMINAL IN
body_inside_diameter0.625 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN
body_outside_diameter0.938 INCHES NOMINAL IN
seating_surface_shapeRADIAL
seal_accommodation_typeRECESSED
flange_seat_to_disk_end_height0.812 INCHES NOMINAL IN
NSN4820-00-359-4537
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: L2128 · 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
•
SEAL ACCOMMODATION TYPE: RECESSED
•
SEATING SURFACE SHAPE: RADIAL
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 76.0 ROCKWELL A MINIMUM AND 78.5 ROCKWELL A MAXIMUM OVERALL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
FLANGE SEAT TO DISK END HEIGHT: 0.812 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.625 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN
•
SEAT RADIUS: 0.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEAL ACCOMMODATION TYPERECESSED
SEATING SURFACE SHAPERADIAL
MATERIALSTEEL OVERALL
HARDNESS RATING76.0 ROCKWELL A MINIMUM AND 78.5 ROCKWELL A MAXIMUM OVERALL
STYLE DESIGNATORPLAIN FLANGED
FLANGE SEAT TO DISK END HEIGHT0.812 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.625 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN
SEAT RADIUS0.031 INCHES NOMINAL IN
SPECIAL FEATURESDRILL 0.500 IN. DIA HOLES 0.375 IN. DEEP AT 120 DEGREES 1.062 IN. FROM FLANGE HAS 0.312 IN. W BY 0.127 IN. DEEP GROOVE AROUND 0.125 IN. FROM TOP IN
UNDER FLANGE HEIGHT1.688 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
67276Interchangeable
interchangeable cross-reference
interchangeable
LW13521Interchangeable
interchangeable cross-reference
interchangeable
18M26105Interchangeable
interchangeable cross-reference
interchangeable
L7SB29-1Interchangeable
interchangeable cross-reference
interchangeable
12/3-S0Interchangeable
interchangeable cross-reference
interchangeable
UL62Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L2128?
L2128 is a SEAT,VALVE.
What parts can replace L2128?
There are 8 known substitutes for L2128: 67276, LW13521, 18M26105 and 5 more. Substitute compatibility should be verified for your specific system.
Is L2128 still available?
L2128 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026