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Y204556002 — VALVE,FLOW CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

Y204556002: VALVE,FLOW CONTROL.

The VALVE,FLOW CONTROL is a the manufacturer industrial component. Key specifications include valve_operation_method: AIR, end_item_identification: CVN NUCLEAR REACTOR BOUNDARY AREA, operating_pressure_and_type: 300.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS, part_name_assigned_by_controlling_agency: PNEUMATIC PILOT CONTROLLER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-540-3136, 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
Y204556002
NSN: 4820-01-540-3136
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
valve_operation_methodAIR
end_connection_quantity2
end_item_identificationCVN NUCLEAR REACTOR BOUNDARY AREA
operating_pressure_and_type300.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
part_name_assigned_by_controlling_agencyPNEUMATIC PILOT CONTROLLER
NSN4820-01-540-3136
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: Y204556002 · 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
•
OPERATING PRESSURE AND TYPE: 300.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
•
END CONNECTION QUANTITY: 2
•
VALVE OPERATION METHOD: AIR
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE AND TYPE300.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
END CONNECTION QUANTITY2
PART NAME ASSIGNED BY CONTROLLING AGENCYPNEUMATIC PILOT CONTROLLER
END ITEM IDENTIFICATIONCVN NUCLEAR REACTOR BOUNDARY AREA
VALVE OPERATION METHODAIR
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 2
LAPB-14801NSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
14801N(300PSI)Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 Y204556002?
Y204556002 is a VALVE,FLOW CONTROL.
What parts can replace Y204556002?
There are 2 known substitutes for Y204556002: LAPB-14801N, 14801N(300PSI). Substitute compatibility should be verified for your specific system.
What is the NSN for Y204556002?
Y204556002 is cataloged in the U.S. Government catalog under NSN 4820-01-540-3136. 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.