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556-6405334 ASS — PARTS KIT,BALL VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

556-6405334 ASS: PARTS KIT,BALL VALVE.

The PARTS KIT,BALL VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET ALL ENDS, style_designator: STRAIGHT THRU, valve_operation_method: MANUAL, end_item_identification: SEAWOLF CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-499-1378, 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
556-6405334 ASS
NSN: 4820-01-499-1378
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET ALL ENDS
style_designatorSTRAIGHT THRU
valve_operation_methodMANUAL
end_item_identificationSEAWOLF CLASS SSN
nominal_pipe_size_accommodated0.500 INCHES ALL ENDS IN
NSN4820-01-499-1378
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 556-6405334 ASS · 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: 0.500 INCHES ALL ENDS IN
•
CONNECTION STYLE: SOCKET ALL ENDS
•
CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL: STEEL CORROSION RESISTING BODY
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS IN
CONNECTION STYLESOCKET ALL ENDS
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALSTEEL CORROSION RESISTING BODY
VALVE OPERATION METHODMANUAL
SUBSTITUTES & CROSS-REFERENCES 3
DF330687 ASSY 69Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF330687Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6405334Reference 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 556-6405334 ASS?
556-6405334 ASS is a PARTS KIT,BALL VALVE.
What parts can replace 556-6405334 ASS?
There are 3 known substitutes for 556-6405334 ASS: DF330687 ASSY 69, DF330687, 6405334. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-6405334 ASS?
556-6405334 ASS is cataloged in the U.S. Government catalog under NSN 4820-01-499-1378. 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.