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2280-400 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2280-400: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, thread_class: 3B, thread_length: 1.312 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 2.188 INCHES NOMINAL IN, flange_diameter: 5.438 INCHES NOMINAL IN, pressure_rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-178-8925, 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
2280-400
NSN: 4810-01-178-8925
NIINs: 011788925, 011883596, 011893413, 011893414
FSC: 4810 — Valves, Powered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialNICKEL ALLOY
thread_class3B
thread_length1.312 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height2.188 INCHES NOMINAL IN
flange_diameter5.438 INCHES NOMINAL IN
pressure_rating250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter3.188 INCHES NOMINAL IN
style_designatorPLAIN THREADED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size2.000 INCHES IN
body_inside_diameter1.156 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4810-01-178-8925
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2280-400 · 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
•
OUTSIDE DIAMETER: 3.188 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.000 INCHES IN
•
THREAD CLASS: 3B
•
MATERIAL: NICKEL ALLOY
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.188 INCHES NOMINAL IN
OUTSIDE DIAMETER3.188 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.000 INCHES IN
THREAD CLASS3B
MATERIALNICKEL ALLOY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 1
508-4325844Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2280-400?
2280-400 is a SEAT,VALVE.
What parts can replace 2280-400?
There is 1 known substitute for 2280-400: 508-4325844. Substitute compatibility should be verified for your specific system.
What is the NSN for 2280-400?
2280-400 is cataloged in the U.S. Government catalog under NSN 4810-01-178-8925. 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.