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DF330631-AY99 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DF330631-AY99: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY STEM, connection_type: BUTT WELD PIPE ALL ENDS, connection_style: BEVELED (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, valve_operation_method: MANUAL, furnished_items_and_quantity: 1 HANDWHEEL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-642-2353, 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
DF330631-AY99
NSN: 4820-01-642-2353
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialNICKEL ALLOY STEM
connection_typeBUTT WELD PIPE ALL ENDS
connection_styleBEVELED (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
valve_operation_methodMANUAL
furnished_items_and_quantity1 HANDWHEEL
nominal_pipe_size_accommodated5.000 INCHES ALL ENDS IN
material_document_and_classificationMIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
NSN4820-01-642-2353
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DF330631-AY99 · 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
SUBSTITUTES & CROSS-REFERENCES 5
801-6404951-AY99Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
211096147L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
211096147Reference document
Same NSN cross-reference
Reference document — Secondary reference
DF330631-AY99L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
801-6404951-AY99L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 DF330631-AY99?
DF330631-AY99 is a VALVE,BALL.
What parts can replace DF330631-AY99?
There are 5 known substitutes for DF330631-AY99: 801-6404951-AY99, 211096147L1, 211096147 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DF330631-AY99?
DF330631-AY99 is cataloged in the U.S. Government catalog under NSN 4820-01-642-2353. 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.