PartsTable
Technical Data Sheet
Download PDF

820-2177521 — FLANGE,GLAND,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

820-2177521: FLANGE,GLAND,VALVE.

The FLANGE,GLAND,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, special_features: NEXT HIGHER ASSY VALVE,VENT, end_item_identification: LOS ANGELES CLASS SSN (688). This part is cataloged in the U.S.

Government catalog under NSN 4820-00-224-6646, 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
820-2177521
NSN: 4820-00-224-6646
NIINs: 002246646, 014837541, 014838129, 014838142, 014838145, 014847776
FSC: 4820 — Valves, Nonpowered
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
special_featuresNEXT HIGHER ASSY VALVE,VENT
bolt_hole_quantity2
end_item_identificationLOS ANGELES CLASS SSN (688)
NSN4820-00-224-6646
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 820-2177521 · 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
•
NOMINAL PIPE SIZE ACCOMMODATED: 12.000 INCHES IN
•
STEM TYPE: RISING
•
CONNECTION TYPE: BUTT WELD PIPE
•
FEATURES PROVIDED: BONNET PACKING
•
BONNET TYPE: OUTSIDE SCREW-YOKE
•
BONNET ATTACHMENT METHOD: BOLTED
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED12.000 INCHES IN
STEM TYPERISING
CONNECTION TYPEBUTT WELD PIPE
FEATURES PROVIDEDBONNET PACKING
BONNET TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED
VALVE OPERATION METHODMANUAL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 820-2177521?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 820-2177521?
820-2177521 is a FLANGE,GLAND,VALVE.
What is the NSN for 820-2177521?
820-2177521 is cataloged in the U.S. Government catalog under NSN 4820-00-224-6646. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 820-2177521

✓ 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.