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6860789 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6860789: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 BODY, flange_diameter: 1.625 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, body_inside_diameter: 1.010 INCHES NOMINAL IN, body_outside_diameter: 1.100 INCHES NOMINAL IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-998-8329, 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
6860789
NSN: 4820-00-998-8329
FSC: 4820 — Valves, Nonpowered
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 BODY
flange_diameter1.625 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
body_inside_diameter1.010 INCHES NOMINAL IN
body_outside_diameter1.100 INCHES NOMINAL IN
seating_surface_shapeFLAT
NSN4820-00-998-8329
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6860789 · 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: 1.625 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.100 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 1.010 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 4340 BODY
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER1.625 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.100 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER1.010 INCHES NOMINAL IN
MATERIALSTEEL COMP 4340 BODY
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 1
EU80124Same 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 6860789?
6860789 is a SEAT,VALVE.
What parts can replace 6860789?
There is 1 known substitute for 6860789: EU80124. Substitute compatibility should be verified for your specific system.
What is the NSN for 6860789?
6860789 is cataloged in the U.S. Government catalog under NSN 4820-00-998-8329. 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.