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F1391 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

F1391: CAPACITOR,FIXED,ELECTROLYTIC.

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: COPPER ALLOY OVERALL, overall_height: 0.313 INCHES NOMINAL IN, style_designator: PLAIN THREADED, body_inside_diameter: 0.125 INCHES NOMINAL IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-353-0544, 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
F1391
NSN: 4820-00-353-0544
FSC: 4820 — Valves, Nonpowered
CAGE: 13829 — PARKER HANNIFIN CORPORATION DIV CYLINDER DIVISION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_height0.313 INCHES NOMINAL IN
style_designatorPLAIN THREADED
body_inside_diameter0.125 INCHES NOMINAL IN
seating_surface_shapeFLAT
NSN4820-00-353-0544
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: F1391 · 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
•
STYLE DESIGNATOR: PLAIN THREADED
•
BODY INSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
SEATING SURFACE SHAPE: FLAT
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.313 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN THREADED
BODY INSIDE DIAMETER0.125 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 5
6CS332Reference document
Same NSN cross-reference
Reference document — Secondary reference
HA00569Reference document
Same NSN cross-reference
Reference document — Secondary reference
CS137Reference document
Same NSN cross-reference
Reference document — Secondary reference
14476P11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
983048Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 F1391?
F1391 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace F1391?
There are 5 known substitutes for F1391: 6CS332, HA00569, CS137 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F1391?
F1391 is cataloged in the U.S. Government catalog under NSN 4820-00-353-0544. 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.