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Technical Data Sheet
PartsTable / COMPONENT / 820-4383568
820-4383568 ✓ 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

The VALVE,GATE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY BODY, stem_type: RISING, bonnet_type: OUTSIDE SCREW-YOKE, special_features: 1ST END PIPE SIZE 4 IN. IN, features_provided: BONNET PACKING, valve_operation_method: MANUAL.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-889-2357, 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
820-4383568
NSN: 4820-00-889-2357
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY BODY
stem_typeRISING
bonnet_typeOUTSIDE SCREW-YOKE
special_features1ST END PIPE SIZE 4 IN. IN
features_providedBONNET PACKING
valve_operation_methodMANUAL
operating_pressure_and_type2500.0 POUNDS PER SQUARE INCH (PSI) FRESH WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsSELECTED AND TESTED IAW NUCLEAR PROPULSION PLANT SYSTEMS
maximum_operating_temp_and_media_for_which_designed670.0 FAHRENHEIT WATER, FRESH DEGF
NSN4820-00-889-2357
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 820-4383568 · 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
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 670.0 FAHRENHEIT WATER, FRESH DEGF
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: SELECTED AND TESTED IAW NUCLEAR PROPULSION PLANT SYSTEMS
•
OPERATING PRESSURE AND TYPE: 2500.0 POUNDS PER SQUARE INCH (PSI) FRESH WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
MATERIAL: NICKEL ALLOY BODY
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
BONNET TYPE: OUTSIDE SCREW-YOKE
•
FEATURES PROVIDED: BONNET PACKING
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES1ST END PIPE SIZE 4 IN. IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED670.0 FAHRENHEIT WATER, FRESH DEGF
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSSELECTED AND TESTED IAW NUCLEAR PROPULSION PLANT SYSTEMS
OPERATING PRESSURE AND TYPE2500.0 POUNDS PER SQUARE INCH (PSI) FRESH WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
MATERIALNICKEL ALLOY BODY
CRITICALITY CODE JUSTIFICATIONZZZY
BONNET TYPEOUTSIDE SCREW-YOKE
FEATURES PROVIDEDBONNET PACKING
STEM TYPERISING
VALVE OPERATION METHODMANUAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
9246746Interchangeable
interchangeable cross-reference
interchangeable
8224A0632-1AInterchangeable
interchangeable cross-reference
interchangeable
8428Interchangeable
interchangeable cross-reference
interchangeable
CLEANCATCHKITInterchangeable
interchangeable cross-reference
interchangeable
10401003Interchangeable
interchangeable cross-reference
interchangeable
7108-5005Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 820-4383568?
820-4383568 is a VALVE,GATE.
What parts can replace 820-4383568?
There are 13 known substitutes for 820-4383568: 9246746, 8224A0632-1A, 8428 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 820-4383568?
820-4383568 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-889-2357. 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