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845-4558782 ITEM — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

845-4558782 ITEM: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, slot_width: 0.260 INCHES NOMINAL IN, thread_size: 2.875-16, thread_class: 3A A, thread_length: 2.875 INCHES NOMINAL IN, overall_length: 0.656 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-476-3856, 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
845-4558782 ITEM
NSN: 4810-01-476-3856
FSC: 4810 — Valves, Powered
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY
slot_width0.260 INCHES NOMINAL IN
thread_size2.875-16
thread_class3A A
thread_length2.875 INCHES NOMINAL IN
overall_length0.656 INCHES NOMINAL IN
style_designatorROUND SLOTTED, EXTERNAL THREAD, BOSS
thread_directionRIGHT-HAND
hole_or_slot_quantity1
screw_thread_locationEXTERNAL
end_item_identificationNAVY EQUIPMENT
smallest_inside_diameter2.250 INCHES MINIMUM AND 2.252 INCHES MAXIMUM IN
NSN4810-01-476-3856
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 845-4558782 ITEM · 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
SUBSTITUTES & CROSS-REFERENCES 4
2643-825-91Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
2640-801X03 PC 14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7286651Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
2643-825-91 ITEM 13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 845-4558782 ITEM?
845-4558782 ITEM is a SEAT,VALVE.
What parts can replace 845-4558782 ITEM?
There are 4 known substitutes for 845-4558782 ITEM: 2643-825-91, 2640-801X03 PC 14, 7286651 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 845-4558782 ITEM?
845-4558782 ITEM is cataloged in the U.S. Government catalog under NSN 4810-01-476-3856. 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.