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NK-318 — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NK-318: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, material_document_and_classification: ASTM 296-GRCF8 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-231-8659, 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
NK-318
NSN: 4820-01-231-8659
FSC: 4820 — Valves, Nonpowered
CAGE: 30828 — KROBACH MFG. CORP. DBA KROBACH MANUFACTURING CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
material_document_and_classificationASTM 296-GRCF8 ASSN STD SINGLE MATERIAL RESPONSE
NSN4820-01-231-8659
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NK-318 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM 296-GRCF8 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM 296-GRCF8 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 3
S-682Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
S-682-22Reference document
Same NSN cross-reference
Reference document — Secondary reference
NK-318-1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 NK-318?
NK-318 is a RETAINER,DISK,VALVE.
What parts can replace NK-318?
There are 3 known substitutes for NK-318: S-682, S-682-22, NK-318-1. Substitute compatibility should be verified for your specific system.
What is the NSN for NK-318?
NK-318 is cataloged in the U.S. Government catalog under NSN 4820-01-231-8659. 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.