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563-8841589-A1 — VALVE,VENT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

563-8841589-A1: VALVE,VENT.

The VALVE,VENT is a the manufacturer industrial component. Key specifications include end_item_identification: VENT VALVE ASSEMBLY, part_name_assigned_by_controlling_agency: VENT VALVE ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-720-7961, 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
563-8841589-A1
NSN: 4820-01-720-7961
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
end_item_identificationVENT VALVE ASSEMBLY
part_name_assigned_by_controlling_agencyVENT VALVE ASSEMBLY
NSN4820-01-720-7961
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 563-8841589-A1 · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYVENT VALVE ASSEMBLY
END ITEM IDENTIFICATIONVENT VALVE ASSEMBLY
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 2
R5520401-A1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LOA002810-A1Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 563-8841589-A1?
563-8841589-A1 is a VALVE,VENT.
What parts can replace 563-8841589-A1?
There are 2 known substitutes for 563-8841589-A1: R5520401-A1, LOA002810-A1. Substitute compatibility should be verified for your specific system.
What is the NSN for 563-8841589-A1?
563-8841589-A1 is cataloged in the U.S. Government catalog under NSN 4820-01-720-7961. 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.