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Technical Data Sheet
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DF330643 FN 14 — DF330643 FN 14

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DF330643 FN 14: DF330643 FN 14.

The DF330643 FN 14 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-452-7208, 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
DF330643 FN 14
NSN: 4820-01-452-7208
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
Part NumberDF330643 FN 14
NSN4820-01-452-7208
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DF330643 FN 14 · 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
•
VALVE TYPE FOR WHICH DESIGNED: BALL
•
LARGEST OUTSIDE DIAMETER: 1.050 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 6408783
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-286 FORM 2,COND-ANL FED SPEC SINGLE MATERIAL RESPONSE
•
VALVE SIZE FOR WHICH DESIGNED: 0.250 INCHES AND 0.500 INCHES IN
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBALL
LARGEST OUTSIDE DIAMETER1.050 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
VALVE MODEL NUMBER FOR WHICH DESIGNED6408783
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286 FORM 2,COND-ANL FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH4.350 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED0.250 INCHES AND 0.500 INCHES IN
SPECIAL FEATURESSTEM END,0.438-14UNC-3A THD,0.850 IN.LG A
END ITEM IDENTIFICATIONSEAWOLF SSN
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 2
DF330643Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6408783Reference 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 DF330643 FN 14?
DF330643 FN 14 is a DF330643 FN 14.
What parts can replace DF330643 FN 14?
There are 2 known substitutes for DF330643 FN 14: DF330643, 6408783. Substitute compatibility should be verified for your specific system.
What is the NSN for DF330643 FN 14?
DF330643 FN 14 is cataloged in the U.S. Government catalog under NSN 4820-01-452-7208. This indicates validated use in U.S. government and defense supply chains.
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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.