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553481 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

553481: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include flange_diameter: 0.871 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN, body_inside_diameter: 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, body_outside_diameter: 0.800 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-780-6507, 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
553481
NSN: 4820-00-780-6507
FSC: 4820 — Valves, Nonpowered
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
flange_diameter0.871 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
body_inside_diameter0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
body_outside_diameter0.800 INCHES NOMINAL IN
NSN4820-00-780-6507
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 553481 · 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 DIAMETER: 0.871 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.800 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.871 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.800 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 553481?
553481 is a SEAT,VALVE.
What is the NSN for 553481?
553481 is cataloged in the U.S. Government catalog under NSN 4820-00-780-6507. 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.