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418829 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

418829: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN, hardness_rating: 35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL, under_flange_height: 1.290 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN, fsc_application_data: OIL FILTER VALVE,ACFT ENGINE, body_outside_diameter: 1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-898-8627, 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
418829
NSN: 4820-00-898-8627
FSC: 4820 — Valves, Nonpowered
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN
hardness_rating35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL
under_flange_height1.290 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
fsc_application_dataOIL FILTER VALVE,ACFT ENGINE
body_outside_diameter1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
NSN4820-00-898-8627
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 418829 · 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: 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN
•
FSC APPLICATION DATA: OIL FILTER VALVE,ACFT ENGINE
•
BODY OUTSIDE DIAMETER: 1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL
•
UNDER FLANGE HEIGHT: 1.290 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
FLANGE DIAMETER2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN
FSC APPLICATION DATAOIL FILTER VALVE,ACFT ENGINE
BODY OUTSIDE DIAMETER1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
HARDNESS RATING35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL
UNDER FLANGE HEIGHT1.290 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
MATERIALSTEEL 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 418829?
418829 is a SEAT,VALVE.
What is the NSN for 418829?
418829 is cataloged in the U.S. Government catalog under NSN 4820-00-898-8627. 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.