PartsTable
Technical Data Sheet
Download PDF

801-6404978-50 — STEM,FLUID VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

801-6404978-50: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 13.210 INCHES NOMINAL IN, end_item_identification: SEAWOLF CLASS SSN, stem_actuating_end_type: THREADED EXTERNALLY, largest_outside_diameter: 2.365 INCHES NOMINAL IN, valve_size_for_which_designed: 4.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-442-3389, 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
801-6404978-50
NSN: 4810-01-442-3389
FSC: 4810 — Valves, Powered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length13.210 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
stem_actuating_end_typeTHREADED EXTERNALLY
largest_outside_diameter2.365 INCHES NOMINAL IN
valve_size_for_which_designed4.000 INCHES IN
valve_type_for_which_designedBALL
NSN4810-01-442-3389
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 801-6404978-50 · 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
•
VALVE TYPE FOR WHICH DESIGNED: BALL
•
LARGEST OUTSIDE DIAMETER: 2.365 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
VALVE SIZE FOR WHICH DESIGNED: 4.000 INCHES IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBALL
LARGEST OUTSIDE DIAMETER2.365 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
OVERALL LENGTH13.210 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED4.000 INCHES IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
6404978Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6404978-50Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF330655-FN-50Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 801-6404978-50?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 801-6404978-50?
801-6404978-50 is a STEM,FLUID VALVE.
What parts can replace 801-6404978-50?
There are 3 known substitutes for 801-6404978-50: 6404978, 6404978-50, DF330655-FN-50. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6404978-50?
801-6404978-50 is cataloged in the U.S. Government catalog under NSN 4810-01-442-3389. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 801-6404978-50

✓ 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.