PartsTable
Technical Data Sheet

S90056/300138 — PARTS KIT,CHECK VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

S90056/300138: PARTS KIT,CHECK VALVE.

The PARTS KIT,CHECK VALVE is a the manufacturer industrial component. Key specifications include pressure_rating: 700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-145-6249, 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
S90056/300138
NSN: 4820-01-145-6249
NIINs: 011456249, 012201339
FSC: 4820 — Valves, Nonpowered
CAGE: 11836 — NATIONAL OILWELL (USA)
SPECIFICATIONS
pressure_rating700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
NSN4820-01-145-6249
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: S90056/300138 · 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
SUBSTITUTES & CROSS-REFERENCES 3
NS-3981Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
NS3981ASSYBCFIND18Reference document
Same NSN cross-reference
Reference document — Secondary reference
NS3981 PIECE 23Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S90056/300138?
S90056/300138 is a PARTS KIT,CHECK VALVE.
What parts can replace S90056/300138?
There are 3 known substitutes for S90056/300138: NS-3981, NS3981ASSYBCFIND18, NS3981 PIECE 23. Substitute compatibility should be verified for your specific system.
What is the NSN for S90056/300138?
S90056/300138 is cataloged in the U.S. Government catalog under NSN 4820-01-145-6249. This indicates validated use in U.S. government and defense supply chains.
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