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803-2177917-031-30 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-2177917-031-30: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY SEAT, overall_height: 0.625 INCHES NOMINAL IN, style_designator: PLAIN THREADED, seat_angle_in_deg: 15.000 NOMINAL, body_inside_diameter: 2.938 INCHES NOMINAL IN, seating_surface_shape: ANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-516-5332, 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
803-2177917-031-30
NSN: 4820-01-516-5332
FSC: 4820 — Valves, Nonpowered
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
overall_height0.625 INCHES NOMINAL IN
style_designatorPLAIN THREADED
seat_angle_in_deg15.000 NOMINAL
body_inside_diameter2.938 INCHES NOMINAL IN
seating_surface_shapeANGULAR
end_item_identificationGATE VALVE, 3"
NSN4820-01-516-5332
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-2177917-031-30 · 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
•
STYLE DESIGNATOR: PLAIN THREADED
•
BODY INSIDE DIAMETER: 2.938 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY SEAT
•
SEAT ANGLE IN DEG: 15.000 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.625 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN THREADED
BODY INSIDE DIAMETER2.938 INCHES NOMINAL IN
END ITEM IDENTIFICATIONGATE VALVE, 3"
MATERIALNICKEL ALLOY SEAT
SEAT ANGLE IN DEG15.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
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
2177917Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 803-2177917-031-30?
803-2177917-031-30 is a SEAT,VALVE.
What parts can replace 803-2177917-031-30?
There is 1 known substitute for 803-2177917-031-30: 2177917. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-2177917-031-30?
803-2177917-031-30 is cataloged in the U.S. Government catalog under NSN 4820-01-516-5332. 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.