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2285-304 PIECE 2 — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2285-304 PIECE 2: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-261-5070, 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
2285-304 PIECE 2
NSN: 4820-01-261-5070
NIINs: 012615070, 015290648
FSC: 4820 — Valves, Nonpowered
CAGE: 53154 — PORTLAND VALVE LLC (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN4820-01-261-5070
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2285-304 PIECE 2 · 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
•
OUTSIDE DIAMETER: 13.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 4.938 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER13.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH3.938 INCHES NOMINAL IN
INSIDE DIAMETER4.938 INCHES NOMINAL IN
SPECIAL FEATURES2 O-RING GROOVES WITH VALVE SEAT CAVITY
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 2285-304 PIECE 2?
2285-304 PIECE 2 is a RETAINER,DISK,VALVE.
What is the NSN for 2285-304 PIECE 2?
2285-304 PIECE 2 is cataloged in the U.S. Government catalog under NSN 4820-01-261-5070. 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.