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Technical Data Sheet
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121-0920 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

121-0920: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-449-7915, 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
121-0920
NSN: 4820-01-449-7915
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
Part Number121-0920
NSN4820-01-449-7915
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 121-0920 · 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 4
3/4 466 YBSWOReference document
Same NSN cross-reference
Reference document — Secondary reference
3/4 446666YBSWOReference document
Same NSN cross-reference
Reference document — Design control — primary reference
9Y6534Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
9Y6534 IT 39Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 121-0920?
121-0920 is a VALVE,BALL.
What parts can replace 121-0920?
There are 4 known substitutes for 121-0920: 3/4 466 YBSWO, 3/4 446666YBSWO, 9Y6534 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121-0920?
121-0920 is cataloged in the U.S. Government catalog under NSN 4820-01-449-7915. This indicates validated use in U.S. government and defense supply chains.
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