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20A45407-3 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20A45407-3: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN, under_flange_height: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, body_inside_diameter: 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN, body_outside_diameter: 0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4810-00-998-7650, 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
20A45407-3
NSN: 4810-00-998-7650
FSC: 4810 — Valves, Powered
CAGE: 11599 — TRIUMPH ENGINE CONTROL SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
under_flange_height0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
body_inside_diameter0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
body_outside_diameter0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
material_document_and_classificationAMS5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4810-00-998-7650
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20A45407-3 · 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: 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
•
UNDER FLANGE HEIGHT: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
FLANGE DIAMETER0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEFLAT
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
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 20A45407-3?
20A45407-3 is a SEAT,VALVE.
What is the NSN for 20A45407-3?
20A45407-3 is cataloged in the U.S. Government catalog under NSN 4810-00-998-7650. 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.