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PLR03-31 — DISK,RUPTURABLE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

PLR03-31: DISK,RUPTURABLE.

The DISK,RUPTURABLE is a the manufacturer industrial component. Key specifications include disk_size: 3.0 INCHES IN, disk_type: REVERSE BUCKLING, disk_material: STEEL COMP 316, burst_pressure: 3.0 PRESSURE POUNDS PER SQUARE INCH GAGE, burst_temperature: 800.0 FAHRENHEIT DEGF, part_name_assigned_by_controlling_agency: RUPTURE DISC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-686-1988, 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
PLR03-31
NSN: 4820-01-686-1988
FSC: 4820 — Valves, Nonpowered
CAGE: 64055 — OKLAHOMA SAFETY EQUIPMENT CO INC DBA OSECO DIV OKLAHOMA SAFETY EQUIPMENT CO. (DBA OSECO) (USA)
SPECIFICATIONS
disk_size3.0 INCHES IN
disk_typeREVERSE BUCKLING
disk_materialSTEEL COMP 316
burst_pressure3.0 PRESSURE POUNDS PER SQUARE INCH GAGE
burst_temperature800.0 FAHRENHEIT DEGF
part_name_assigned_by_controlling_agencyRUPTURE DISC
NSN4820-01-686-1988
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: PLR03-31 · 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: STEEL COMP 316
•
BURST PRESSURE: 3.0 PRESSURE POUNDS PER SQUARE INCH GAGE
•
BURST TEMPERATURE: 800.0 FAHRENHEIT DEGF
•
DISK TYPE: REVERSE BUCKLING
•
DISK SIZE: 3.0 INCHES IN
TECHNICAL CHARACTERISTICS
DISK MATERIALSTEEL COMP 316
BURST PRESSURE3.0 PRESSURE POUNDS PER SQUARE INCH GAGE
BURST TEMPERATURE800.0 FAHRENHEIT DEGF
DISK TYPEREVERSE BUCKLING
PART NAME ASSIGNED BY CONTROLLING AGENCYRUPTURE DISC
DISK SIZE3.0 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 2
R03-111-021021 ITEM 5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3233620Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PLR03-31?
PLR03-31 is a DISK,RUPTURABLE.
What parts can replace PLR03-31?
There are 2 known substitutes for PLR03-31: R03-111-021021 ITEM 5, 3233620. Substitute compatibility should be verified for your specific system.
What is the NSN for PLR03-31?
PLR03-31 is cataloged in the U.S. Government catalog under NSN 4820-01-686-1988. 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.