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S15F3 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

S15F3: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL SEAT, special_features: BACK; VALVE SIZE 2.50 IN. IN.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-284-2248, 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
S15F3
NSN: 4820-01-284-2248
NIINs: 012842248, 012842249
FSC: 4820 — Valves, Nonpowered
CAGE: 79342 — WILLIAM E WILLIAMS VALVE CORP (USA)
SPECIFICATIONS
materialSTEEL SEAT
special_featuresBACK; VALVE SIZE 2.50 IN. IN
NSN4820-01-284-2248
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: S15F3 · 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
•
MATERIAL: STEEL SEAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESBODY,WITH STELLITE OVERLAY; VALVE SIZE 2.50 IN. IN
MATERIALSTEEL SEAT
SUBSTITUTES & CROSS-REFERENCES 2
S15F3 PIECE 5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LHD8656Reference 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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S15F3?
S15F3 is a SEAT,VALVE.
What parts can replace S15F3?
There are 2 known substitutes for S15F3: S15F3 PIECE 5, LHD8656. Substitute compatibility should be verified for your specific system.
What is the NSN for S15F3?
S15F3 is cataloged in the U.S. Government catalog under NSN 4820-01-284-2248. 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.