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FV19-644-6 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

FV19-644-6: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: RUBBER, overall_height: 0.344 INCHES NOMINAL IN, inside_diameter: 0.781 INCHES NOMINAL IN, pressure_rating: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, outside_diameter: 1.625 INCHES NOMINAL IN, style_designator: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-540-2089, 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
FV19-644-6
NSN: 4820-00-540-2089
FSC: 4820 — Valves, Nonpowered
CAGE: 04845 — AUTOMATIC SWITCH COMPANY DBA ASCO (USA)
SPECIFICATIONS
materialRUBBER
overall_height0.344 INCHES NOMINAL IN
inside_diameter0.781 INCHES NOMINAL IN
pressure_rating125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter1.625 INCHES NOMINAL IN
style_designatorPLAIN
media_for_which_designedWATER
NSN4820-00-540-2089
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: FV19-644-6 · 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
•
PRESSURE RATING: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
INSIDE DIAMETER: 0.781 INCHES NOMINAL IN
•
MEDIA FOR WHICH DESIGNED: WATER
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.344 INCHES NOMINAL IN
PRESSURE RATING125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
INSIDE DIAMETER0.781 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDWATER
MATERIALRUBBER
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FV19-644-6?
FV19-644-6 is a DISK,VALVE.
What is the NSN for FV19-644-6?
FV19-644-6 is cataloged in the U.S. Government catalog under NSN 4820-00-540-2089. 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.