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640-21A — LEVER,MANUAL CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

640-21A: LEVER,MANUAL CONTROL.

The LEVER,MANUAL CONTROL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SEAT, end_item_identification: E/I MODEL EV-1925, 2 1/2 INCH SOLENOID VALVE; W/S TARAWA CLASS LHA IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-464-6335, 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
640-21A
NSN: 4820-01-464-6335
FSC: 4820 — Valves, Nonpowered
CAGE: 14561 — MAGNATROL VALVE CORP DIV CLARK-COOPER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SEAT
end_item_identificationE/I MODEL EV-1925, 2 1/2 INCH SOLENOID VALVE; W/S TARAWA CLASS LHA IN
NSN4820-01-464-6335
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 640-21A · 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
•
MATERIAL: STEEL CORROSION RESISTING SEAT
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONE/I MODEL EV-1925, 2 1/2 INCH SOLENOID VALVE; W/S TARAWA CLASS LHA IN
MATERIALSTEEL CORROSION RESISTING SEAT
SUBSTITUTES & CROSS-REFERENCES 2
ADV-665D ITEM 51Reference document
Same NSN cross-reference
Reference document — Secondary reference
ADV-665DReference 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 640-21A?
640-21A is a LEVER,MANUAL CONTROL.
What parts can replace 640-21A?
There are 2 known substitutes for 640-21A: ADV-665D ITEM 51, ADV-665D. Substitute compatibility should be verified for your specific system.
What is the NSN for 640-21A?
640-21A is cataloged in the U.S. Government catalog under NSN 4820-01-464-6335. 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.