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803-4384536-45 — STEM,NEEDLE VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-4384536-45: STEM,NEEDLE VALVE.

The STEM,NEEDLE VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, disk_style: CONICAL, TAPERED POINT, overall_length: 4.938 INCHES NOMINAL IN, special_features: TO BE OXYGEN CLEANED, end_item_identification: SEAWOLF CLASS SSN, stem_actuating_end_type: THREADED EXTERNALLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-424-2624, 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
803-4384536-45
NSN: 4820-01-424-2624
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
disk_styleCONICAL, TAPERED POINT
overall_length4.938 INCHES NOMINAL IN
special_featuresTO BE OXYGEN CLEANED
end_item_identificationSEAWOLF CLASS SSN
stem_actuating_end_typeTHREADED EXTERNALLY
largest_outside_diameter0.625 INCHES NOMINAL IN
valve_size_for_which_designed0.500 INCHES IN
NSN4820-01-424-2624
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-4384536-45 · 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
•
LARGEST OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
DISK STYLE: CONICAL, TAPERED POINT
•
VALVE SIZE FOR WHICH DESIGNED: 0.500 INCHES IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
LARGEST OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
DISK STYLECONICAL, TAPERED POINT
OVERALL LENGTH4.938 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED0.500 INCHES IN
SPECIAL FEATURESTO BE OXYGEN CLEANED
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
803-4384536-3XXX-45Reference document
Same NSN cross-reference
Reference document — Secondary reference
803-4684536-3XXReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
803-4384536-35XReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 803-4384536-45?
803-4384536-45 is a STEM,NEEDLE VALVE.
What parts can replace 803-4384536-45?
There are 3 known substitutes for 803-4384536-45: 803-4384536-3XXX-45, 803-4684536-3XX, 803-4384536-35X. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-4384536-45?
803-4384536-45 is cataloged in the U.S. Government catalog under NSN 4820-01-424-2624. 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.