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N389030058 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

N389030058: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 1.750 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, surface_treatment: CHROMIUM OVERALL, under_flange_height: 0.281 INCHES NOMINAL IN, body_inside_diameter: 0.938 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-595-4648, 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
N389030058
NSN: 4820-00-595-4648
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter1.750 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
surface_treatmentCHROMIUM OVERALL
under_flange_height0.281 INCHES NOMINAL IN
body_inside_diameter0.938 INCHES NOMINAL IN
body_outside_diameter1.312 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.719 INCHES NOMINAL IN
NSN4820-00-595-4648
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N389030058 · 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: 0.719 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.750 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.312 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.938 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMIUM OVERALL
•
UNDER FLANGE HEIGHT: 0.281 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.719 INCHES NOMINAL IN
FLANGE DIAMETER1.750 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.312 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.938 INCHES NOMINAL IN
SURFACE TREATMENTCHROMIUM OVERALL
UNDER FLANGE HEIGHT0.281 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEFLAT
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
38903-00-58Reference document
Same NSN cross-reference
Reference document — Secondary reference
23804NPC4Same 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 N389030058?
N389030058 is a SEAT,VALVE.
What parts can replace N389030058?
There are 2 known substitutes for N389030058: 38903-00-58, 23804NPC4. Substitute compatibility should be verified for your specific system.
What is the NSN for N389030058?
N389030058 is cataloged in the U.S. Government catalog under NSN 4820-00-595-4648. 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.