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D641-04 — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

D641-04: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, outside_diameter: 4.000 INCHES NOMINAL IN, special_features: WATERTIGHT AND FIRE RESISTANT, style_designator: STRAIGHT THRU FLANGED ENDS, media_for_which_designed: WATER, FRESH SINGLE RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-323-7134, 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
D641-04
NSN: 4820-01-323-7134
NIINs: 013237134, 013237695
FSC: 4820 — Valves, Nonpowered
CAGE: 04613 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
outside_diameter4.000 INCHES NOMINAL IN
special_featuresWATERTIGHT AND FIRE RESISTANT
style_designatorSTRAIGHT THRU FLANGED ENDS
media_for_which_designedWATER, FRESH SINGLE RESPONSE
NSN4820-01-323-7134
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D641-04 · 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
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
MEDIA FOR WHICH DESIGNED: WATER, FRESH SINGLE RESPONSE
•
MATERIAL: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
SPECIAL FEATURESWATERTIGHT AND FIRE RESISTANT
MEDIA FOR WHICH DESIGNEDWATER, FRESH SINGLE RESPONSE
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING BODY
MATERIALSTEEL STEM
SUBSTITUTES & CROSS-REFERENCES 1
910010-040-01Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D641-04?
D641-04 is a VALVE,BUTTERFLY.
What parts can replace D641-04?
There is 1 known substitute for D641-04: 910010-040-01. Substitute compatibility should be verified for your specific system.
What is the NSN for D641-04?
D641-04 is cataloged in the U.S. Government catalog under NSN 4820-01-323-7134. 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.