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7840-019 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

7840-019: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 2.375 INCHES NOMINAL IN, shank_diameter: 3.463 INCHES NOMINAL IN, flange_diameter: 2.540 INCHES NOMINAL IN, style_designator: POPPET. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-307-8839, 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
7840-019
NSN: 4820-01-307-8839
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL
overall_height2.375 INCHES NOMINAL IN
shank_diameter3.463 INCHES NOMINAL IN
flange_diameter2.540 INCHES NOMINAL IN
style_designatorPOPPET
NSN4820-01-307-8839
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 7840-019 · 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
•
SHANK DIAMETER: 3.463 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.540 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER3.463 INCHES NOMINAL IN
FLANGE DIAMETER2.540 INCHES NOMINAL IN
OVERALL HEIGHT2.375 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
MATERIALSTEEL
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 2
7840-019 ITEMDReference document
Same NSN cross-reference
Reference document — Secondary reference
7840-019 ITEM 47DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7840-019?
7840-019 is a DISK,VALVE.
What parts can replace 7840-019?
There are 2 known substitutes for 7840-019: 7840-019 ITEMD, 7840-019 ITEM 47D. Substitute compatibility should be verified for your specific system.
What is the NSN for 7840-019?
7840-019 is cataloged in the U.S. Government catalog under NSN 4820-01-307-8839. 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.