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N278PC4-13 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

N278PC4-13: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flange_diameter: 1.498 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 45.000 NOMINAL, under_flange_height: 0.250 INCHES NOMINAL IN, body_inside_diameter: 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-393-4313, 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
N278PC4-13
NSN: 4820-00-393-4313
FSC: 4820 — Valves, Nonpowered
CAGE: 26505 — GROVE VALVE OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter1.498 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
seat_angle_in_deg45.000 NOMINAL
under_flange_height0.250 INCHES NOMINAL IN
body_inside_diameter0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
body_outside_diameter1.248 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN4820-00-393-4313
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N278PC4-13 · 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: 0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 1.498 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 1.248 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
UNDER FLANGE HEIGHT: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
FLANGE DIAMETER1.498 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.248 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT0.250 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 4
575-3801-144430Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
575-3801-1444300REVAPC10Reference document
Same NSN cross-reference
Reference document — Secondary reference
234501Reference document
Same NSN cross-reference
Reference document — Secondary reference
N645PC4-18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N278PC4-13?
N278PC4-13 is a SEAT,VALVE.
What parts can replace N278PC4-13?
There are 4 known substitutes for N278PC4-13: 575-3801-144430, 575-3801-1444300REVAPC10, 234501 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N278PC4-13?
N278PC4-13 is cataloged in the U.S. Government catalog under NSN 4820-00-393-4313. 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.