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8458-21-924-7056 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8458-21-924-7056: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, overall_height: 0.720 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 3.000 INCHES NOMINAL IN, body_outside_diameter: 4.855 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-614-0720, 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
8458-21-924-7056
NSN: 4820-01-614-0720
FSC: 4820 — Valves, Nonpowered
CAGE: 67066 — AMERICAN MACHINING CO (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
overall_height0.720 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter3.000 INCHES NOMINAL IN
body_outside_diameter4.855 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencySEAT
NSN4820-01-614-0720
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8458-21-924-7056 · 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
•
BODY OUTSIDE DIAMETER: 4.855 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 3.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.720 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.855 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER3.000 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAT
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE 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 1
845-8219247 ITEM NO.56Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 8458-21-924-7056?
8458-21-924-7056 is a SEAT,VALVE.
What parts can replace 8458-21-924-7056?
There is 1 known substitute for 8458-21-924-7056: 845-8219247 ITEM NO.56. Substitute compatibility should be verified for your specific system.
What is the NSN for 8458-21-924-7056?
8458-21-924-7056 is cataloged in the U.S. Government catalog under NSN 4820-01-614-0720. 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.