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18S-FS3 ITEM 6 — CAP,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

18S-FS3 ITEM 6: CAP,VALVE.

The CAP,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, attachment_method: BOLTS, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, valve_size_for_which_designed: 0.750 INCHES IN, valve_type_for_which_designed: GATE, valve_model_number_for_which_designed: A0681-00 AND 18S-FS3. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-423-0908, 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
18S-FS3 ITEM 6
NSN: 4820-01-423-0908
FSC: 4820 — Valves, Nonpowered
CAGE: 61661 — NEWMANS INC NEW JERSEY DIV (USA)
SPECIFICATIONS
materialSTEEL
attachment_methodBOLTS
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
valve_size_for_which_designed0.750 INCHES IN
valve_type_for_which_designedGATE
valve_model_number_for_which_designedA0681-00 AND 18S-FS3
NSN4820-01-423-0908
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18S-FS3 ITEM 6 · 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
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: A0681-00 AND 18S-FS3
•
VALVE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
•
MATERIAL: STEEL
•
ATTACHMENT METHOD: BOLTS
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDGATE
VALVE MODEL NUMBER FOR WHICH DESIGNEDA0681-00 AND 18S-FS3
VALVE SIZE FOR WHICH DESIGNED0.750 INCHES IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALSTEEL
ATTACHMENT METHODBOLTS
SUBSTITUTES & CROSS-REFERENCES 2
A0681-00 IT6Reference document
Same NSN cross-reference
Reference document — Secondary reference
A0681-00Reference 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 18S-FS3 ITEM 6?
18S-FS3 ITEM 6 is a CAP,VALVE.
What parts can replace 18S-FS3 ITEM 6?
There are 2 known substitutes for 18S-FS3 ITEM 6: A0681-00 IT6, A0681-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 18S-FS3 ITEM 6?
18S-FS3 ITEM 6 is cataloged in the U.S. Government catalog under NSN 4820-01-423-0908. 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.