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5816525 — DISK,RUPTURABLE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

5816525: DISK,RUPTURABLE.

The DISK,RUPTURABLE is a the manufacturer industrial component. Key specifications include disk_size: 1.250 INCHES IN, disk_material: NICKEL ALLOY, burst_pressure: 5200.0 PRESSURE POUNDS PER SQUARE INCH ABSOLUTE, special_features: BURST DISC ASSEMBLY,SAFETY-CO2 CONTAINER;THICKNESS:0.630 IN.MIN,0.645 IN.MAX IN, cross-sectional_shape: CONCAVE, end_item_identification: MK93 MOD0 FLEET EXERCISE SYSTEM,TORPEDO MK50. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-325-9700, 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
5816525
NSN: 4820-01-325-9700
FSC: 4820 — Valves, Nonpowered
CAGE: 67289 — PRESSURE SPECIALTIES INCORPORATED (USA)
SPECIFICATIONS
disk_size1.250 INCHES IN
disk_materialNICKEL ALLOY
burst_pressure5200.0 PRESSURE POUNDS PER SQUARE INCH ABSOLUTE
special_featuresBURST DISC ASSEMBLY,SAFETY-CO2 CONTAINER;THICKNESS:0.630 IN.MIN,0.645 IN.MAX IN
cross-sectional_shapeCONCAVE
end_item_identificationMK93 MOD0 FLEET EXERCISE SYSTEM,TORPEDO MK50
NSN4820-01-325-9700
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 5816525 · 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 ALLOY
•
BURST PRESSURE: 5200.0 PRESSURE POUNDS PER SQUARE INCH ABSOLUTE
•
CROSS-SECTIONAL SHAPE: CONCAVE
•
DISK SIZE: 1.250 INCHES IN
TECHNICAL CHARACTERISTICS
DISK MATERIALNICKEL ALLOY
BURST PRESSURE5200.0 PRESSURE POUNDS PER SQUARE INCH ABSOLUTE
CROSS-SECTIONAL SHAPECONCAVE
SPECIAL FEATURESBURST DISC ASSEMBLY,SAFETY-CO2 CONTAINER;THICKNESS:0.630 IN.MIN,0.645 IN.MAX IN
END ITEM IDENTIFICATIONMK93 MOD0 FLEET EXERCISE SYSTEM,TORPEDO MK50
DISK SIZE1.250 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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5816525?
5816525 is a DISK,RUPTURABLE.
What is the NSN for 5816525?
5816525 is cataloged in the U.S. Government catalog under NSN 4820-01-325-9700. 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.