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LSD8503-5-6IN — STEM,FLUID VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

LSD8503-5-6IN: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, stem_actuating_end_type: THREADED EXTERNALLY, valve_size_for_which_designed: 6.000 INCHES IN, valve_type_for_which_designed: GATE, material_document_and_classification: ASTM A182, GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-447-3487, 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
LSD8503-5-6IN
NSN: 4820-01-447-3487
FSC: 4820 — Valves, Nonpowered
CAGE: 79342 — WILLIAM E WILLIAMS VALVE CORP (USA)
SPECIFICATIONS
materialSTEEL
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
stem_actuating_end_typeTHREADED EXTERNALLY
valve_size_for_which_designed6.000 INCHES IN
valve_type_for_which_designedGATE
material_document_and_classificationASTM A182, GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE
NSN4820-01-447-3487
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: LSD8503-5-6IN · 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: GATE
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A182, GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE
•
VALVE SIZE FOR WHICH DESIGNED: 6.000 INCHES IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDGATE
STEM ACTUATING END TYPETHREADED EXTERNALLY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A182, GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE
VALVE SIZE FOR WHICH DESIGNED6.000 INCHES IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
LSD 8503 ITEM 5 6INReference document
Same NSN cross-reference
Reference document — Secondary reference
LSD 8503Reference 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 LSD8503-5-6IN?
LSD8503-5-6IN is a STEM,FLUID VALVE.
What parts can replace LSD8503-5-6IN?
There are 2 known substitutes for LSD8503-5-6IN: LSD 8503 ITEM 5 6IN, LSD 8503. Substitute compatibility should be verified for your specific system.
What is the NSN for LSD8503-5-6IN?
LSD8503-5-6IN is cataloged in the U.S. Government catalog under NSN 4820-01-447-3487. 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.