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4577FPC6 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4577FPC6: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-646-9765, 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
4577FPC6
NSN: 4820-00-646-9765
NIINs: 006469765, 012259501
FSC: 4820 — Valves, Nonpowered
CAGE: 04537 — ATWOOD & MORRILL CO., INC. DBA WEIR VALVES AND CONTROLS USA (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
NSN4820-00-646-9765
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4577FPC6 · 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
•
SHANK DIAMETER: 2.240 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.240 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 30.0 DEGREES NOMINAL
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
SHANK DIAMETER2.240 INCHES NOMINAL IN
FLANGE DIAMETER2.240 INCHES NOMINAL IN
OVERALL HEIGHT4.770 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE30.0 DEGREES NOMINAL
SPECIAL FEATURESTWO THD HOLES ON END OPPOSITE SEAT,THREE GUIDE GROOVES ON EXTERIOR SURFACE
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
3316287PC6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3316286PC6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4577FPC6?
4577FPC6 is a DISK,VALVE.
What parts can replace 4577FPC6?
There are 2 known substitutes for 4577FPC6: 3316287PC6, 3316286PC6. Substitute compatibility should be verified for your specific system.
What is the NSN for 4577FPC6?
4577FPC6 is cataloged in the U.S. Government catalog under NSN 4820-00-646-9765. 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.