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A2004391 — DISK,RUPTURABLE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A2004391: DISK,RUPTURABLE.

The DISK,RUPTURABLE is a the manufacturer industrial component. Key specifications include disk_size: 3.000 INCHES IN, disk_type: COMPOSITE, disk_material: NICKEL AND PLASTIC, burst_temperature: 72.0 FAHRENHEIT DEGF, end_item_identification: VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-506-4135, 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
A2004391
NSN: 4820-01-506-4135
FSC: 4820 — Valves, Nonpowered
CAGE: 32874 — BS&B SAFETY SYSTEMS LLC (USA)
SPECIFICATIONS
disk_size3.000 INCHES IN
disk_typeCOMPOSITE
disk_materialNICKEL AND PLASTIC
special_features3" ATOMOSPHERIC VESSEL (AV) RUPTURABLE DISK COMPOSITE OF NICKEL DISK, KLINGERSIL GASKET, POLYTETRAFLUOROETHYLENE CUSHION AND SEAL. BURST RATING @ 9:11.5 PSID @ 72DEG F. DEGF
burst_temperature72.0 FAHRENHEIT DEGF
end_item_identificationVALVE
NSN4820-01-506-4135
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A2004391 · 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
•
DISK MATERIAL: NICKEL AND PLASTIC
•
BURST TEMPERATURE: 72.0 FAHRENHEIT DEGF
•
DISK TYPE: COMPOSITE
•
DISK SIZE: 3.000 INCHES IN
TECHNICAL CHARACTERISTICS
DISK MATERIALNICKEL AND PLASTIC
BURST TEMPERATURE72.0 FAHRENHEIT DEGF
DISK TYPECOMPOSITE
SPECIAL FEATURES3" ATOMOSPHERIC VESSEL (AV) RUPTURABLE DISK COMPOSITE OF NICKEL DISK, KLINGERSIL GASKET, POLYTETRAFLUOROETHYLENE CUSHION AND SEAL. BURST RATING @ 9:11.5 PSID @ 72DEG F. DEGF
END ITEM IDENTIFICATIONVALVE
DISK SIZE3.000 INCHES IN
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A2004391?
A2004391 is a DISK,RUPTURABLE.
What is the NSN for A2004391?
A2004391 is cataloged in the U.S. Government catalog under NSN 4820-01-506-4135. 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.