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803-4384539-X-0 — COUPLING HALF,VALVE STEM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-4384539-X-0: COUPLING HALF,VALVE STEM.

The COUPLING HALF,VALVE STEM is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: NICKEL-COPPER-ALUMINUM,QQ-N-286,CL A,ANL AND AH,CD OR HF; 4 IN. DIA; FOR 12 IN.

SUCTION AND DISCHARGE VALVE IN. This part is cataloged in the U.S. Government catalog under NSN 4820-01-135-1370, 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
803-4384539-X-0
NSN: 4820-01-135-1370
FSC: 4820 — Valves, Nonpowered
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
general_characteristics_item_descriptionNICKEL-COPPER-ALUMINUM,QQ-N-286,CL A,ANL AND AH,CD OR HF; 4 IN. DIA; FOR 12 IN. SUCTION AND DISCHARGE VALVE IN
NSN4820-01-135-1370
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-4384539-X-0 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: NICKEL-COPPER-ALUMINUM,QQ-N-286,CL A,ANL AND AH,CD OR HF; 4 IN. DIA; FOR 12 IN. SUCTION AND DISCHARGE VALVE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL-COPPER-ALUMINUM,QQ-N-286,CL A,ANL AND AH,CD OR HF; 4 IN. DIA; FOR 12 IN. SUCTION AND DISCHARGE VALVE IN
SUBSTITUTES & CROSS-REFERENCES 3
209-5201915PC9Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
209-5201915Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6551-1355Reference 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 803-4384539-X-0?
803-4384539-X-0 is a COUPLING HALF,VALVE STEM.
What parts can replace 803-4384539-X-0?
There are 3 known substitutes for 803-4384539-X-0: 209-5201915PC9, 209-5201915, 6551-1355. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-4384539-X-0?
803-4384539-X-0 is cataloged in the U.S. Government catalog under NSN 4820-01-135-1370. 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.