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PL501E456AFPC3 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

PL501E456AFPC3: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_radius: 0.750 INCHES NOMINAL IN, flange_diameter: 4.251 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 2.500 INCHES NOMINAL IN, body_inside_diameter: 2.500 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-017-1273, 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
PL501E456AFPC3
NSN: 4820-01-017-1273
FSC: 4820 — Valves, Nonpowered
CAGE: 03502 — GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_radius0.750 INCHES NOMINAL IN
flange_diameter4.251 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height2.500 INCHES NOMINAL IN
body_inside_diameter2.500 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
body_outside_diameter3.748 INCHES NOMINAL IN
seating_surface_shapeRADIAL
seal_accommodation_typeGROOVED
flange_seat_to_disk_end_height0.500 INCHES NOMINAL IN
material_document_and_classificationMIL-S-18410,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-01-017-1273
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: PL501E456AFPC3 · 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: 0.500 INCHES NOMINAL IN
•
FLANGE DIAMETER: 4.251 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 3.748 INCHES NOMINAL IN
•
SEAL ACCOMMODATION TYPE: GROOVED
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18410,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 2.500 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
•
SEAT RADIUS: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.500 INCHES NOMINAL IN
FLANGE DIAMETER4.251 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER3.748 INCHES NOMINAL IN
SEAL ACCOMMODATION TYPEGROOVED
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18410,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER2.500 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
SEAT RADIUS0.750 INCHES NOMINAL IN
UNDER FLANGE HEIGHT2.500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
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 3
6017340-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
101C428AB-1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
X314419Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 PL501E456AFPC3?
PL501E456AFPC3 is a SEAT,VALVE.
What parts can replace PL501E456AFPC3?
There are 3 known substitutes for PL501E456AFPC3: 6017340-001, 101C428AB-1, X314419. Substitute compatibility should be verified for your specific system.
What is the NSN for PL501E456AFPC3?
PL501E456AFPC3 is cataloged in the U.S. Government catalog under NSN 4820-01-017-1273. 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.