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2640-405X3 — PARTS KIT,BALL VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2640-405X3: PARTS KIT,BALL VALVE.

The PARTS KIT,BALL VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, supply_items_and_quantities: BALL 1; SEAT 2, valve_design_control_activity: 80064, material_document_and_classification: QQ-S-763, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-868-2974, 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
2640-405X3
NSN: 4820-00-868-2974
NIINs: 008682974, 011343684, 011416303, 011418944, 011454237, 011464156, 011647187
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
component_quantity3
supply_items_and_quantitiesBALL 1; SEAT 2
valve_design_control_activity80064
material_document_and_classificationQQ-S-763, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE
NSN4820-00-868-2974
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2640-405X3 · 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
•
PORT DIAMETER: 1.000 INCHES NOMINAL IN
•
SPHERICAL DIAMETER: 1.745 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN
•
PORT CONFIGURATION: STRAIGHT
•
STEM ACCOMMODATION QUANTITY: 1
•
PORT QUANTITY: 2
•
SURFACE TREATMENT: PLASTIC POLYTETRAFLUOROETHYLENE
•
MATERIAL: STEEL STAINLESS - USE STB000
TECHNICAL CHARACTERISTICS
PORT DIAMETER1.000 INCHES NOMINAL IN
SPHERICAL DIAMETER1.745 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN
PORT CONFIGURATIONSTRAIGHT
STEM ACCOMMODATION QUANTITY1
PORT QUANTITY2
SURFACE TREATMENTPLASTIC POLYTETRAFLUOROETHYLENE
MATERIALSTEEL STAINLESS - USE STB000
SUBSTITUTES & CROSS-REFERENCES 1
2640-405X3PC2Same 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 2640-405X3?
2640-405X3 is a PARTS KIT,BALL VALVE.
What parts can replace 2640-405X3?
There is 1 known substitute for 2640-405X3: 2640-405X3PC2. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-405X3?
2640-405X3 is cataloged in the U.S. Government catalog under NSN 4820-00-868-2974. 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.