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A49343MFD — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A49343MFD: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, overall_height: 1.422 INCHES NOMINAL IN, flange_diameter: 5.650 INCHES NOMINAL IN, body_inside_diameter: 4.000 INCHES NOMINAL IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-152-0166, 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
A49343MFD
NSN: 4820-01-152-0166
FSC: 4820 — Valves, Nonpowered
CAGE: 34889 — HUNT VALVE COMPANY INC DBA UNION FLONETICS (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
overall_height1.422 INCHES NOMINAL IN
flange_diameter5.650 INCHES NOMINAL IN
body_inside_diameter4.000 INCHES NOMINAL IN
seating_surface_shapeFLAT
NSN4820-01-152-0166
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A49343MFD · 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
•
FLANGE DIAMETER: 5.650 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER5.650 INCHES NOMINAL IN
OVERALL HEIGHT1.422 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.000 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
D49440Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 A49343MFD?
A49343MFD is a SEAT,VALVE.
What parts can replace A49343MFD?
There is 1 known substitute for A49343MFD: D49440. Substitute compatibility should be verified for your specific system.
What is the NSN for A49343MFD?
A49343MFD is cataloged in the U.S. Government catalog under NSN 4820-01-152-0166. 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.