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3026618R1 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3026618R1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY CA360 OVERALL, overall_height: 0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN, style_designator: PLAIN, body_inside_diameter: 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, body_outside_diameter: 0.504 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-737-7814, 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
3026618R1
NSN: 4820-00-737-7814
FSC: 4820 — Valves, Nonpowered
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialCOPPER ALLOY CA360 OVERALL
overall_height0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
style_designatorPLAIN
body_inside_diameter0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
body_outside_diameter0.504 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
seating_surface_shapeFLAT
NSN4820-00-737-7814
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3026618R1 · 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: 0.504 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY CA360 OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.154 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.504 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY CA360 OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 5
211537Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7377814Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
232621Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
507355Reference document
Same NSN cross-reference
Reference document — Secondary reference
418578Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3026618R1?
3026618R1 is a SEAT,VALVE.
What parts can replace 3026618R1?
There are 5 known substitutes for 3026618R1: 211537, 7377814, 232621 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3026618R1?
3026618R1 is cataloged in the U.S. Government catalog under NSN 4820-00-737-7814. 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.