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PartsTable / COMPONENT / 8561 PIECE 5
8561 PIECE 5 ✓ Verified by PartsTable
— · GATE VALVE
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,PLASTIC DIELECTR. Key specifications include material: STEEL COMP 303, overall_length: 3.375 INCHES NOMINAL IN, stem_actuating_end_type: ROUNDED, largest_outside_diameter: 0.750 INCHES NOMINAL IN, valve_size_for_which_designed: 1.500 INCHES IN, valve_type_for_which_designed: RELIEF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-120-8339, 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
8561 PIECE 5
NSN: 4820-01-120-8339
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL COMP 303
overall_length3.375 INCHES NOMINAL IN
stem_actuating_end_typeROUNDED
largest_outside_diameter0.750 INCHES NOMINAL IN
valve_size_for_which_designed1.500 INCHES IN
valve_type_for_which_designedRELIEF
material_document_and_classificationASTMA276-303 ASSN STD SINGLE MATERIAL RESPONSE
valve_model_number_for_which_designed2741-T
NSN4820-01-120-8339
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8561 PIECE 5 · 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
•
STEM ACTUATING END TYPE: ROUNDED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMA276-303 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 303
•
VALVE TYPE FOR WHICH DESIGNED: RELIEF
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 2741-T
•
LARGEST OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
VALVE SIZE FOR WHICH DESIGNED: 1.500 INCHES IN
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)
STEM ACTUATING END TYPEROUNDED
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA276-303 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH3.375 INCHES NOMINAL IN
MATERIALSTEEL COMP 303
VALVE TYPE FOR WHICH DESIGNEDRELIEF
VALVE MODEL NUMBER FOR WHICH DESIGNED2741-T
LARGEST OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED1.500 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
28330Interchangeable
interchangeable cross-reference
interchangeable
26866Interchangeable
interchangeable cross-reference
interchangeable
28330PInterchangeable
interchangeable cross-reference
interchangeable
0170-0076Interchangeable
interchangeable cross-reference
interchangeable
111PP93260Interchangeable
interchangeable cross-reference
interchangeable
20241Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8561 PIECE 5?
8561 PIECE 5 is a CAPACITOR,FIXED,PLASTIC DIELECTR.
What parts can replace 8561 PIECE 5?
There are 26 known substitutes for 8561 PIECE 5: 28330, 26866, 28330P and 23 more. Substitute compatibility should be verified for your specific system.
Is 8561 PIECE 5 still available?
8561 PIECE 5 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026