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S90304 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

S90304: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, part_name_assigned_by_controlling_agency: CLAPPER AND PIN ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-399-1029, 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
S90304
NSN: 4820-01-399-1029
NIINs: 013991029, 016701442
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
part_name_assigned_by_controlling_agencyCLAPPER AND PIN ASSEMBLY
NSN4820-01-399-1029
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: S90304 · 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
•
PRESSURE RATING: 700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
TEMP RATING: 200.0 FAHRENHEIT NOMINAL DEGF
•
STYLE DESIGNATOR: SWING CHECK
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
PRESSURE RATING700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TEMP RATING200.0 FAHRENHEIT NOMINAL DEGF
STYLE DESIGNATORSWING CHECK
SPECIAL FEATURESINCL PIN; FOR 6.000 IN. CHECK VALVE IN
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 2
DS-B-90305 ITEM NO. 5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DS-B-90305Reference 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 S90304?
S90304 is a DISK,VALVE.
What parts can replace S90304?
There are 2 known substitutes for S90304: DS-B-90305 ITEM NO. 5, DS-B-90305. Substitute compatibility should be verified for your specific system.
What is the NSN for S90304?
S90304 is cataloged in the U.S. Government catalog under NSN 4820-01-399-1029. 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.