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4266-5,DC — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4266-5,DC: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, flange_diameter: 1.816 INCHES NOMINAL IN, special_features: LEVEL I REQUIREMENTS DO NOT APPLY, style_designator: PLAIN FLANGED, under_flange_height: 0.266 INCHES NOMINAL IN, body_inside_diameter: 0.716 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-164-7808, 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
4266-5,DC
NSN: 4820-01-164-7808
NIINs: 011647808, 013117428
FSC: 4820 — Valves, Nonpowered
CAGE: 54716 — HYDRASEARCH CO., INC. DBA USE CAGE CODE 32142 FOR CATALOGING (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
flange_diameter1.816 INCHES NOMINAL IN
special_featuresLEVEL I REQUIREMENTS DO NOT APPLY
style_designatorPLAIN FLANGED
under_flange_height0.266 INCHES NOMINAL IN
body_inside_diameter0.716 INCHES NOMINAL IN
body_outside_diameter1.760 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.056 INCHES NOMINAL IN
NSN4820-01-164-7808
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4266-5,DC · 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 SEAT TO DISK END HEIGHT: 0.056 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.816 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.760 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.716 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.266 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.056 INCHES NOMINAL IN
FLANGE DIAMETER1.816 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.760 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.716 INCHES NOMINAL IN
SPECIAL FEATURESLEVEL I REQUIREMENTS DO NOT APPLY
UNDER FLANGE HEIGHT0.266 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
042665Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 4266-5,DC?
4266-5,DC is a SEAT,VALVE.
What parts can replace 4266-5,DC?
There is 1 known substitute for 4266-5,DC: 042665. Substitute compatibility should be verified for your specific system.
What is the NSN for 4266-5,DC?
4266-5,DC is cataloged in the U.S. Government catalog under NSN 4820-01-164-7808. 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.