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Technical Data Sheet
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D48121 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

D48121: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-520-7854, 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
D48121
NSN: 4820-01-520-7854
NIINs: 015207854, 015207877
FSC: 4820 — Valves, Nonpowered
CAGE: 65079 — DANCO VALVE COMPANY (USA)
SPECIFICATIONS
Part NumberD48121
NSN4820-01-520-7854
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D48121 · 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
D48121 NOTE 7 P/N D48-12-09ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
D48-12-09AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D48121?
D48121 is a DISK,VALVE.
What parts can replace D48121?
There are 2 known substitutes for D48121: D48121 NOTE 7 P/N D48-12-09A, D48-12-09A. Substitute compatibility should be verified for your specific system.
What is the NSN for D48121?
D48121 is cataloged in the U.S. Government catalog under NSN 4820-01-520-7854. This indicates validated use in U.S. government and defense supply chains.
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