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211999C — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

211999C: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, seat_angle: 30.0 DEGREES NOMINAL, overall_height: 1.700 INCHES NOMINAL IN, shank_diameter: 0.373 INCHES NOMINAL IN, flange_diameter: 0.748 INCHES NOMINAL IN, inside_diameter: 0.248 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-004-0791, 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
211999C
NSN: 4820-01-004-0791
FSC: 4820 — Valves, Nonpowered
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
seat_angle30.0 DEGREES NOMINAL
overall_height1.700 INCHES NOMINAL IN
shank_diameter0.373 INCHES NOMINAL IN
flange_diameter0.748 INCHES NOMINAL IN
inside_diameter0.248 INCHES NOMINAL IN
style_designatorPOPPET
flange_seat_to_disk_end_height1.100 INCHES NOMINAL IN
NSN4820-01-004-0791
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 211999C · 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: 0.373 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 1.100 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.748 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 30.0 DEGREES NOMINAL
•
INSIDE DIAMETER: 0.248 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.373 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT1.100 INCHES NOMINAL IN
FLANGE DIAMETER0.748 INCHES NOMINAL IN
OVERALL HEIGHT1.700 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE30.0 DEGREES NOMINAL
INSIDE DIAMETER0.248 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
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 211999C?
211999C is a DISK,VALVE.
What is the NSN for 211999C?
211999C is cataloged in the U.S. Government catalog under NSN 4820-01-004-0791. 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.