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1346-3-18 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1346-3-18: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC FACE, style_designator: PLAIN, body_inside_diameter: 0.207 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN, body_outside_diameter: 0.709 INCHES MINIMUM AND 0.711 INCHES MAXIMUM IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-059-5009, 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
1346-3-18
NSN: 4820-00-059-5009
FSC: 4820 — Valves, Nonpowered
CAGE: 09790 — EATON AEROSPACE LLC DBA STERER ENGINEERING DIV VALVE & ACTUATOR (USA)
SPECIFICATIONS
materialPLASTIC FACE
style_designatorPLAIN
body_inside_diameter0.207 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
body_outside_diameter0.709 INCHES MINIMUM AND 0.711 INCHES MAXIMUM IN
seating_surface_shapeFLAT
NSN4820-00-059-5009
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1346-3-18 · 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: 0.709 INCHES MINIMUM AND 0.711 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 0.207 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC FACE
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER0.709 INCHES MINIMUM AND 0.711 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER0.207 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
MATERIALPLASTIC FACE
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
134669Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1346-3-18?
1346-3-18 is a SEAT,VALVE.
What parts can replace 1346-3-18?
There is 1 known substitute for 1346-3-18: 134669. Substitute compatibility should be verified for your specific system.
What is the NSN for 1346-3-18?
1346-3-18 is cataloged in the U.S. Government catalog under NSN 4820-00-059-5009. 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.