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121B8 — VALVE,LIQUID OXYGEN DRAIN

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

121B8: VALVE,LIQUID OXYGEN DRAIN.

The VALVE,LIQUID OXYGEN DRAIN is a the manufacturer industrial component. Key specifications include special_features: COUPLING USED TO TRANSFER LIQUID OXYGEN FROM SUPPLY SOURCE TO AIRCRAFT LOX CONVERTERS, end_item_identification: AIRCRAFT; C-141,C-135,C-5,F-15,F-16; AIRCRAFT SUPPORT EQUIPMENT; B-52,B-1,E-48,F-5. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-796-9680, 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
121B8
NSN: 4820-00-796-9680
FSC: 4820 — Valves, Nonpowered
CAGE: 96101 — GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO (USA)
SPECIFICATIONS
special_featuresCOUPLING USED TO TRANSFER LIQUID OXYGEN FROM SUPPLY SOURCE TO AIRCRAFT LOX CONVERTERS
end_item_identificationAIRCRAFT; C-141,C-135,C-5,F-15,F-16; AIRCRAFT SUPPORT EQUIPMENT; B-52,B-1,E-48,F-5
NSN4820-00-796-9680
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 121B8 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESCOUPLING USED TO TRANSFER LIQUID OXYGEN FROM SUPPLY SOURCE TO AIRCRAFT LOX CONVERTERS
END ITEM IDENTIFICATIONAIRCRAFT; C-141,C-135,C-5,F-15,F-16; AIRCRAFT SUPPORT EQUIPMENT; B-52,B-1,E-48,F-5
SUBSTITUTES & CROSS-REFERENCES 7
MILV38201Reference document
Same NSN cross-reference
Reference document — Secondary reference
21123-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LV1363Reference document
Same NSN cross-reference
Reference document — Secondary reference
94-2544-01201Reference document
Same NSN cross-reference
Reference document — Secondary reference
4820PL2190647Reference document
Same NSN cross-reference
Reference document — Informative reference only
65M463-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121B8?
121B8 is a VALVE,LIQUID OXYGEN DRAIN.
What parts can replace 121B8?
There are 7 known substitutes for 121B8: MILV38201, 21123-1, LV1363 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121B8?
121B8 is cataloged in the U.S. Government catalog under NSN 4820-00-796-9680. 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.