PartsTable
Technical Data Sheet
Download PDF

MC14398 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

MC14398: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C OR STEEL COMP 440F OVERALL, flange_diameter: 0.358 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, surface_treatment: PASSIVATE OVERALL, under_flange_height: 0.398 INCHES NOMINAL IN, body_inside_diameter: 0.134 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-168-4652, 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
MC14398
NSN: 4810-01-168-4652
FSC: 4810 — Valves, Powered
CAGE: 99643 — EATON AEROSPACE LLC DBA EATON AEROSPACE JACKSON (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OR STEEL COMP 440F OVERALL
flange_diameter0.358 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
surface_treatmentPASSIVATE OVERALL
under_flange_height0.398 INCHES NOMINAL IN
body_inside_diameter0.134 INCHES NOMINAL IN
fsc_application_dataACFT HYD SYSTEM
body_outside_diameter0.248 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.055 INCHES NOMINAL IN
material_document_and_classificationAMS5630A ASSN STD 1ST MATERIAL RESPONSE OR AMS5632 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN4810-01-168-4652
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MC14398 · 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: 0.055 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.358 INCHES NOMINAL IN
•
FSC APPLICATION DATA: ACFT HYD SYSTEM
•
BODY OUTSIDE DIAMETER: 0.248 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5630A ASSN STD 1ST MATERIAL RESPONSE OR AMS5632 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.134 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.055 INCHES NOMINAL IN
FLANGE DIAMETER0.358 INCHES NOMINAL IN
FSC APPLICATION DATAACFT HYD SYSTEM
BODY OUTSIDE DIAMETER0.248 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5630A ASSN STD 1ST MATERIAL RESPONSE OR AMS5632 ASSN STD 2ND MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER0.134 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
UNDER FLANGE HEIGHT0.398 INCHES NOMINAL IN
MATERIALSTEEL COMP 440C OR STEEL COMP 440F OVERALL
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy MC14398?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MC14398?
MC14398 is a SEAT,VALVE.
What is the NSN for MC14398?
MC14398 is cataloged in the U.S. Government catalog under NSN 4810-01-168-4652. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MC14398

✓ 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.