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Technical Data Sheet
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30-640-755 — RESISTOR,VARIABLE,NONWIRE WOUND,

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

30-640-755: RESISTOR,VARIABLE,NONWIRE WOUND,.

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: ALUMINUM ALLOY, special_features: FOR 30 IN. BUTTERFLY VALVE IN, media_for_which_designed: WATER.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-344-9436, 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
30-640-755
NSN: 4820-01-344-9436
FSC: 4820 — Valves, Nonpowered
CAGE: 04613 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
special_featuresFOR 30 IN. BUTTERFLY VALVE IN
media_for_which_designedWATER
NSN4820-01-344-9436
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 30-640-755 · 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
•
MEDIA FOR WHICH DESIGNED: WATER
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESFOR 30 IN. BUTTERFLY VALVE IN
MEDIA FOR WHICH DESIGNEDWATER
MATERIALALUMINUM ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
1004-612Reference 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 30-640-755?
30-640-755 is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace 30-640-755?
There is 1 known substitute for 30-640-755: 1004-612. Substitute compatibility should be verified for your specific system.
What is the NSN for 30-640-755?
30-640-755 is cataloged in the U.S. Government catalog under NSN 4820-01-344-9436. 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.