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CCB-4320 — COCK,POPPET DRAIN

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CCB-4320: COCK,POPPET DRAIN.

The COCK,POPPET DRAIN is a the manufacturer industrial component. Key specifications include thread_class: 3A FIRST END A, special_features: OVERALL LENGTH 1.250 INCHES, THREADS 7/16-20 UNF-3A THD, A, style_designator: STRAIGHT THRU, valve_operation_method: MANUAL, thread_series_designator: UNF ALL ENDS, part_name_assigned_by_controlling_agency: ASSEMBLY DRAIN VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-688-3879, 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
CCB-4320
NSN: 4820-01-688-3879
FSC: 4820 — Valves, Nonpowered
CAGE: 47038 — CURTIS SUPERIOR VALVE CO., INC. DBA CURTIS SUPERIOR VALVE CO (USA)
SPECIFICATIONS
thread_class3A FIRST END A
special_featuresOVERALL LENGTH 1.250 INCHES, THREADS 7/16-20 UNF-3A THD, A
style_designatorSTRAIGHT THRU
valve_operation_methodMANUAL
thread_series_designatorUNF ALL ENDS
part_name_assigned_by_controlling_agencyASSEMBLY DRAIN VALVE
NSN4820-01-688-3879
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CCB-4320 · 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
•
STYLE DESIGNATOR: STRAIGHT THRU
•
THREAD CLASS: 3A FIRST END A
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
SPECIAL FEATURESOVERALL LENGTH 1.250 INCHES, THREADS 7/16-20 UNF-3A THD, A
PART NAME ASSIGNED BY CONTROLLING AGENCYASSEMBLY DRAIN VALVE
THREAD CLASS3A FIRST END A
THREAD SERIES DESIGNATORUNF ALL ENDS
VALVE OPERATION METHODMANUAL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CCB-4320?
CCB-4320 is a COCK,POPPET DRAIN.
What is the NSN for CCB-4320?
CCB-4320 is cataloged in the U.S. Government catalog under NSN 4820-01-688-3879. 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.