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Technical Data Sheet
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DD-4639 — VALVE,PLUG

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DD-4639: VALVE,PLUG.

The VALVE,PLUG is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-498-3608, 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
DD-4639
NSN: 4820-01-498-3608
NIINs: 014983608, 015478914
FSC: 4820 — Valves, Nonpowered
CAGE: 53234 — PARKER-HANNIFIN CORPORATION DIV LAKEVILLE PARKER SERVICE CENTER (USA)
SPECIFICATIONS
Part NumberDD-4639
NSN4820-01-498-3608
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DD-4639 · 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 2
DD-4639/CFV19278-007 IT 007Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CFV 19278-007Reference 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 DD-4639?
DD-4639 is a VALVE,PLUG.
What parts can replace DD-4639?
There are 2 known substitutes for DD-4639: DD-4639/CFV19278-007 IT 007, CFV 19278-007. Substitute compatibility should be verified for your specific system.
What is the NSN for DD-4639?
DD-4639 is cataloged in the U.S. Government catalog under NSN 4820-01-498-3608. This indicates validated use in U.S. government and defense supply chains.
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