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Technical Data Sheet
PartsTable / COMPONENT / 803-1385637-05X-20
803-1385637-05X-20 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, shank_diameter: 0.812 INCHES NOMINAL IN, pressure_rating: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, outside_diameter: 6.000 INCHES NOMINAL IN, special_features: INCLUDES PIECES 3 HINGE;11 NUT;12 COTTER PIN;17 DISC;19 WASHER., style_designator: SWING CHECK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-380-9258, 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
803-1385637-05X-20
NSN: 4820-01-380-9258
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
shank_diameter0.812 INCHES NOMINAL IN
pressure_rating250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
outside_diameter6.000 INCHES NOMINAL IN
special_featuresINCLUDES PIECES 3 HINGE;11 NUT;12 COTTER PIN;17 DISC;19 WASHER.
style_designatorSWING CHECK
end_item_identification5.00 IN.FLANGED BRONZE CHECK VALVE,P/N 803-1385637;APPL.NIMITZ CLASS AIRCRAFT CARRIERS. IN
media_for_which_designedWATER-OIL-GAS
flange_seat_to_disk_end_height0.891 INCHES NOMINAL IN
NSN4820-01-380-9258
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-1385637-05X-20 · 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
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
•
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
CRITICALITY CODE JUSTIFICATIONZZZY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
803-1385637-05X-20Interchangeable
interchangeable cross-reference
interchangeable
1385637Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803-1385637-05X-20?
803-1385637-05X-20 is a DISK,VALVE.
What parts can replace 803-1385637-05X-20?
There are 2 known substitutes for 803-1385637-05X-20: 803-1385637-05X-20, 1385637. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-1385637-05X-20?
803-1385637-05X-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-380-9258. 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