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CV54520 — VALVE,STOP-CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CV54520: VALVE,STOP-CHECK.

The VALVE,STOP-CHECK is a the manufacturer industrial component. Key specifications include length: 0.375 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, thread_length: 1.250 INCHES MINIMUM IN, overall_length: 2.719 INCHES NOMINAL IN, shank_diameter: 0.381 INCHES MINIMUM IN, style_designator: STRAIGHT FLUTE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-191-8084, 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
CV54520
NSN: 4820-01-191-8084
FSC: 4820 — Valves, Nonpowered
CAGE: 16780 — EATON AEROSPACE LLC (USA)
SPECIFICATIONS
length0.375 INCHES NOMINAL SQUARE END IN
materialSTEEL OVERALL
thread_length1.250 INCHES MINIMUM IN
flute_quantity4
overall_length2.719 INCHES NOMINAL IN
shank_diameter0.381 INCHES MINIMUM IN
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
width_across_flats0.238 INCHES NOMINAL IN
starting_chamfer_typeBOTTOMING
thread_forming_methodGROUND
NSN4820-01-191-8084
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CV54520 · 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
SUBSTITUTES & CROSS-REFERENCES 1
C-54520Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CV54520?
CV54520 is a VALVE,STOP-CHECK.
What parts can replace CV54520?
There is 1 known substitute for CV54520: C-54520. Substitute compatibility should be verified for your specific system.
What is the NSN for CV54520?
CV54520 is cataloged in the U.S. Government catalog under NSN 4820-01-191-8084. 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.