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8579-704-063 — BACKSEAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8579-704-063: BACKSEAT.

The BACKSEAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, special_features: W/S 170 FT PATROL COASTAL (PC-1) CLASS SHIPS FT, end_item_identification: 12.00IN PRESSURE SEAL STOP CHECK VALVE IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-468-4269, 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
8579-704-063
NSN: 4820-01-468-4269
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
special_featuresW/S 170 FT PATROL COASTAL (PC-1) CLASS SHIPS FT
end_item_identification12.00IN PRESSURE SEAL STOP CHECK VALVE IN
NSN4820-01-468-4269
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8579-704-063 · 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 CORROSION RESISTING
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESW/S 170 FT PATROL COASTAL (PC-1) CLASS SHIPS FT
END ITEM IDENTIFICATION12.00IN PRESSURE SEAL STOP CHECK VALVE IN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
7498-729 ITEM NO 18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7498-729Reference 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 8579-704-063?
8579-704-063 is a BACKSEAT.
What parts can replace 8579-704-063?
There are 2 known substitutes for 8579-704-063: 7498-729 ITEM NO 18, 7498-729. Substitute compatibility should be verified for your specific system.
What is the NSN for 8579-704-063?
8579-704-063 is cataloged in the U.S. Government catalog under NSN 4820-01-468-4269. 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.