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Technical Data Sheet
PartsTable / MRO / C2491
C2491 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include material: STEEL COMP 1020, tolerance_range_per_section: -2.00 TO 2.00 PERCENT SINGLE SECTION, capacitance_value_per_section: 300.000 PICOFARADS SINGLE SECTION, material_document_and_classification: AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE, nonderated_continuous_voltage_rating_and_type_per_section: 500.0 DC SINGLE SECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-098-9722, 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
MRO→ MRO_GENERAL→ C2491
NSN: 4820-01-098-9722
FSC: 4820
CAGE: 17062 — P J VALVES INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1020
tolerance_range_per_section-2.00 TO 2.00 PERCENT SINGLE SECTION
capacitance_value_per_section300.000 PICOFARADS SINGLE SECTION
material_document_and_classificationAISI 1020 ASSN STD SINGLE MATERIAL RESPONSE
nonderated_continuous_voltage_rating_and_type_per_section500.0 DC SINGLE SECTION
NSN4820-01-098-9722
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C2491 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 1020
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1020 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 1020
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
D2334 PC41 1INInterchangeable
interchangeable cross-reference
interchangeable
A2333Interchangeable
interchangeable cross-reference
interchangeable
D2334Interchangeable
interchangeable cross-reference
interchangeable
B2545Interchangeable
interchangeable cross-reference
interchangeable
D2334-1IN-2CAMInterchangeable
interchangeable cross-reference
interchangeable
32471Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C2491?
C2491 is a CAPACITOR,FIXED,MICA DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace C2491?
There are 22 known substitutes for C2491: D2334 PC41 1IN, A2333, D2334 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C2491?
C2491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-098-9722. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026