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8002456 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8002456: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE OVERALL, flange_diameter: 0.436 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, surface_treatment: PASSIVATE OVERALL, under_flange_height: 0.181 INCHES NOMINAL IN, body_inside_diameter: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-219-8293, 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
8002456
NSN: 4820-00-219-8293
FSC: 4820 — Valves, Nonpowered
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
flange_diameter0.436 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
surface_treatmentPASSIVATE OVERALL
under_flange_height0.181 INCHES NOMINAL IN
body_inside_diameter0.125 INCHES NOMINAL IN
body_outside_diameter0.436 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.069 INCHES NOMINAL IN
material_document_and_classificationMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-219-8293
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8002456 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.069 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.436 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.436 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
UNDER FLANGE HEIGHT: 0.181 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.069 INCHES NOMINAL IN
FLANGE DIAMETER0.436 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.436 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER0.125 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
UNDER FLANGE HEIGHT0.181 INCHES NOMINAL IN
MATERIALSTEEL COMP 303SE OVERALL
SEATING SURFACE SHAPEFLAT
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8002456?
8002456 is a SEAT,VALVE.
What is the NSN for 8002456?
8002456 is cataloged in the U.S. Government catalog under NSN 4820-00-219-8293. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.