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801-6408779 — RETAINER,SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

801-6408779: RETAINER,SEAT,VALVE.

The RETAINER,SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC ACETAL OVERALL, seat_radius: 0.406 INCHES NOMINAL IN, temp_rating: 100.0 FAHRENHEIT NOMINAL DEGF, overall_height: 0.469 INCHES NOMINAL IN, inside_diameter: 3.905 INCHES NOMINAL IN, pressure_rating: 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-370-7712, 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
801-6408779
NSN: 4820-01-370-7712
NIINs: 013707712, 013707970, 013708237, 014746248, 014949025
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC ACETAL OVERALL
seat_radius0.406 INCHES NOMINAL IN
temp_rating100.0 FAHRENHEIT NOMINAL DEGF
overall_height0.469 INCHES NOMINAL IN
inside_diameter3.905 INCHES NOMINAL IN
pressure_rating125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter4.757 INCHES NOMINAL IN
special_featuresSWING FOR 2 1/2IN.VALVE IN
style_designatorPLAIN
body_inside_diameter2.730 INCHES NOMINAL IN
body_outside_diameter3.983 INCHES NOMINAL IN
seating_surface_shapeRADIAL
NSN4820-01-370-7712
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 801-6408779 · 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
•
OUTSIDE DIAMETER: 4.757 INCHES NOMINAL IN
•
VALVE SIZE FOR WHICH DESIGNED: 2.000 INCHES IN
•
INSIDE DIAMETER: 3.905 INCHES NOMINAL IN
•
VALVE DESIGN CONTROL ACTIVITY: 53711
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER4.757 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED2.000 INCHES IN
INSIDE DIAMETER3.905 INCHES NOMINAL IN
VALVE DESIGN CONTROL ACTIVITY53711
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
DF330636 FIND 20Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
801-6408779-20Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF330636Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 801-6408779?
801-6408779 is a RETAINER,SEAT,VALVE.
What parts can replace 801-6408779?
There are 3 known substitutes for 801-6408779: DF330636 FIND 20, 801-6408779-20, DF330636. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6408779?
801-6408779 is cataloged in the U.S. Government catalog under NSN 4820-01-370-7712. 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.