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1663-D 2IN PC17 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1663-D 2IN PC17: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY SEAT, flange_diameter: 2.125 INCHES NOMINAL IN, special_features: NHA VALVE TEMP RE, style_designator: THREADED FLANGED, under_flange_height: 0.375 INCHES NOMINAL IN, body_inside_diameter: 1.656 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-464-5478, 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
1663-D 2IN PC17
NSN: 4820-01-464-5478
FSC: 4820 — Valves, Nonpowered
CAGE: 75545 — LAWLER MANUFACTURING COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY SEAT
flange_diameter2.125 INCHES NOMINAL IN
special_featuresNHA VALVE TEMP RE
style_designatorTHREADED FLANGED
under_flange_height0.375 INCHES NOMINAL IN
body_inside_diameter1.656 INCHES NOMINAL IN
seating_surface_shapeFLAT
end_item_identificationW/S CODE NIMITZ CLASS CVN
flange_seat_to_disk_end_height0.750 INCHES NOMINAL IN
NSN4820-01-464-5478
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1663-D 2IN PC17 · 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 SEAT TO DISK END HEIGHT: 0.750 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 1.656 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.375 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY SEAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.750 INCHES NOMINAL IN
FLANGE DIAMETER2.125 INCHES NOMINAL IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER1.656 INCHES NOMINAL IN
SPECIAL FEATURESNHA VALVE TEMP RE
UNDER FLANGE HEIGHT0.375 INCHES NOMINAL IN
END ITEM IDENTIFICATIONW/S CODE NIMITZ CLASS CVN
MATERIALCOPPER ALLOY SEAT
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
3280-02Same 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 1663-D 2IN PC17?
1663-D 2IN PC17 is a SEAT,VALVE.
What parts can replace 1663-D 2IN PC17?
There is 1 known substitute for 1663-D 2IN PC17: 3280-02. Substitute compatibility should be verified for your specific system.
What is the NSN for 1663-D 2IN PC17?
1663-D 2IN PC17 is cataloged in the U.S. Government catalog under NSN 4820-01-464-5478. 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.