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7778 ITEM 19 — LIGHT EMITTING DIODE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

7778 ITEM 19: LIGHT EMITTING DIODE.

The LIGHT EMITTING DIODE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, end_item_identification: NEXT HIGHER ASSEMBLY 7772D 9/16 INCH 18 TREAD IN, part_name_assigned_by_controlling_agency: AIR RELIEF VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-589-9794, 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
7778 ITEM 19
NSN: 4820-01-589-9794
FSC: 4820 — Valves, Nonpowered
CAGE: 22501 — HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
end_item_identificationNEXT HIGHER ASSEMBLY 7772D 9/16 INCH 18 TREAD IN
part_name_assigned_by_controlling_agencyAIR RELIEF VALVE
NSN4820-01-589-9794
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 7778 ITEM 19 · 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
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYAIR RELIEF VALVE
END ITEM IDENTIFICATIONNEXT HIGHER ASSEMBLY 7772D 9/16 INCH 18 TREAD IN
MATERIALCOPPER ALLOY BODY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 7778 ITEM 19?
7778 ITEM 19 is a LIGHT EMITTING DIODE.
What is the NSN for 7778 ITEM 19?
7778 ITEM 19 is cataloged in the U.S. Government catalog under NSN 4820-01-589-9794. 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.