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Technical Data Sheet
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99-1446991 — COVER,CARRIER,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

99-1446991: COVER,CARRIER,VALVE.

The COVER,CARRIER,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4810-00-452-7280, 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
99-1446991
NSN: 4810-00-452-7280
FSC: 4810 — Valves, Powered
CAGE: 99995 — NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION
SPECIFICATIONS
general_characteristics_item_descriptionPLASTIC,ODD SHAPE,1 IN. WIDE BY 1.805 IN. LONG BY 0.190 IN. THICK,FLANGE 0.090 IN. THICK W/4 HOLES 0.125 IN. DIA ON 0.720 IN. C TO C,4 INTER HOLES 0.100 IN. DIA SPACED ON 0.156 IN. C TO C IN
NSN4810-00-452-7280
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 99-1446991 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: PLASTIC,ODD SHAPE,1 IN. WIDE BY 1.805 IN. LONG BY 0.190 IN. THICK,FLANGE 0.090 IN. THICK W/4 HOLES 0.125 IN. DIA ON 0.720 IN. C TO C,4 INTER HOLES 0.100 IN. DIA SPACED ON 0.156 IN. C TO C IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONPLASTIC,ODD SHAPE,1 IN. WIDE BY 1.805 IN. LONG BY 0.190 IN. THICK,FLANGE 0.090 IN. THICK W/4 HOLES 0.125 IN. DIA ON 0.720 IN. C TO C,4 INTER HOLES 0.100 IN. DIA SPACED ON 0.156 IN. C TO C IN
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES 1
1-01845-301Same 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 99-1446991?
99-1446991 is a COVER,CARRIER,VALVE.
What parts can replace 99-1446991?
There is 1 known substitute for 99-1446991: 1-01845-301. Substitute compatibility should be verified for your specific system.
What is the NSN for 99-1446991?
99-1446991 is cataloged in the U.S. Government catalog under NSN 4810-00-452-7280. 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.