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61403-A — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

61403-A: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: RUBBER BUNA N OVERALL, overall_height: 0.188 INCHES NOMINAL IN, special_features: BLACK RUBBER, style_designator: PLAIN, body_outside_diameter: 3.500 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: SEAT-RUBBER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-618-3269, 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
61403-A
NSN: 4820-01-618-3269
FSC: 4820 — Valves, Nonpowered
CAGE: 20266 — ELKHART BRASS MANUFACTURING COMPANY, LLC DIV ELKHART BRASS MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialRUBBER BUNA N OVERALL
overall_height0.188 INCHES NOMINAL IN
special_featuresBLACK RUBBER
style_designatorPLAIN
body_outside_diameter3.500 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencySEAT-RUBBER
NSN4820-01-618-3269
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 61403-A · 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: 3.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: RUBBER BUNA N OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.188 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER3.500 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
SPECIAL FEATURESBLACK RUBBER
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAT-RUBBER
MATERIALRUBBER BUNA N OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
61043000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 61403-A?
61403-A is a SEAT,VALVE.
What parts can replace 61403-A?
There is 1 known substitute for 61403-A: 61043000. Substitute compatibility should be verified for your specific system.
What is the NSN for 61403-A?
61403-A is cataloged in the U.S. Government catalog under NSN 4820-01-618-3269. 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.