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8179 PIECE 2 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8179 PIECE 2: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: SEAT MATERIAL PER ASTM A 182 GR F6 HARD FACED, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-148-9415, 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
8179 PIECE 2
NSN: 4820-01-148-9415
FSC: 4820 — Valves, Nonpowered
CAGE: 79342 — WILLIAM E WILLIAMS VALVE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresSEAT MATERIAL PER ASTM A 182 GR F6 HARD FACED
seating_surface_shapeFLAT
NSN4820-01-148-9415
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8179 PIECE 2 · 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 OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSEAT MATERIAL PER ASTM A 182 GR F6 HARD FACED
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
8179Reference 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 8179 PIECE 2?
8179 PIECE 2 is a SEAT,VALVE.
What parts can replace 8179 PIECE 2?
There is 1 known substitute for 8179 PIECE 2: 8179. Substitute compatibility should be verified for your specific system.
What is the NSN for 8179 PIECE 2?
8179 PIECE 2 is cataloged in the U.S. Government catalog under NSN 4820-01-148-9415. 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.