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20417-1020 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20417-1020: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flange_diameter: 1.550 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.337 INCHES NOMINAL IN, body_inside_diameter: 0.625 INCHES NOMINAL IN, body_outside_diameter: 1.550 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-061-0143, 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
20417-1020
NSN: 4820-01-061-0143
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter1.550 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.337 INCHES NOMINAL IN
body_inside_diameter0.625 INCHES NOMINAL IN
body_outside_diameter1.550 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.148 INCHES NOMINAL IN
NSN4820-01-061-0143
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20417-1020 · 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: 0.148 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.550 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.550 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.337 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.148 INCHES NOMINAL IN
FLANGE DIAMETER1.550 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.550 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.625 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.337 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING 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

No substitute or cross-reference records for this part.

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 20417-1020?
20417-1020 is a SEAT,VALVE.
What is the NSN for 20417-1020?
20417-1020 is cataloged in the U.S. Government catalog under NSN 4820-01-061-0143. 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.