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298-30-10PC8-3IN — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

298-30-10PC8-3IN: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, flange_diameter: 5.302 INCHES MINIMUM AND 5.307 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 25.000 MINIMUM AND 35.000 MAXIMUM, under_flange_height: 0.465 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN, body_inside_diameter: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-908-9473, 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
298-30-10PC8-3IN
NSN: 4820-00-908-9473
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
flange_diameter5.302 INCHES MINIMUM AND 5.307 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
seat_angle_in_deg25.000 MINIMUM AND 35.000 MAXIMUM
under_flange_height0.465 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
body_inside_diameter3.000 INCHES NOMINAL IN
body_outside_diameter5.052 INCHES MINIMUM AND 5.057 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.165 INCHES NOMINAL IN
NSN4820-00-908-9473
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 298-30-10PC8-3IN · 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: 0.165 INCHES NOMINAL IN
•
FLANGE DIAMETER: 5.302 INCHES MINIMUM AND 5.307 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 5.052 INCHES MINIMUM AND 5.057 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 3.000 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.465 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
SEAT ANGLE IN DEG: 25.000 MINIMUM AND 35.000 MAXIMUM
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.165 INCHES NOMINAL IN
FLANGE DIAMETER5.302 INCHES MINIMUM AND 5.307 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER5.052 INCHES MINIMUM AND 5.057 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER3.000 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.465 INCHES MINIMUM AND 0.468 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
SEAT ANGLE IN DEG25.000 MINIMUM AND 35.000 MAXIMUM
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 2
0021840001001Reference document
Same NSN cross-reference
Reference document — Secondary reference
218-40-02Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 298-30-10PC8-3IN?
298-30-10PC8-3IN is a SEAT,VALVE.
What parts can replace 298-30-10PC8-3IN?
There are 2 known substitutes for 298-30-10PC8-3IN: 0021840001001, 218-40-02. Substitute compatibility should be verified for your specific system.
What is the NSN for 298-30-10PC8-3IN?
298-30-10PC8-3IN is cataloged in the U.S. Government catalog under NSN 4820-00-908-9473. 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.