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Technical Data Sheet
PartsTable / COMPONENT / 57643-9804
57643-9804 ✓ 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 STOP,VALVE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: NICKEL COPPER ALLOY; 1.250 IN. O/A L; 0.880 IN.

O/A W IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-175-7727, 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
57643-9804
NSN: 4820-01-175-7727
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
general_characteristics_item_descriptionNICKEL COPPER ALLOY; 1.250 IN. O/A L; 0.880 IN. O/A W IN
NSN4820-01-175-7727
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 57643-9804 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: NICKEL COPPER ALLOY; 1.250 IN. O/A L; 0.880 IN. O/A W IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL COPPER ALLOY; 1.250 IN. O/A L; 0.880 IN. O/A W IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4675792-0034Interchangeable
interchangeable cross-reference
interchangeable
87643-9804Interchangeable
interchangeable cross-reference
interchangeable
501-4675792 ITEM 34Interchangeable
interchangeable cross-reference
interchangeable
501-4675792Interchangeable
interchangeable cross-reference
interchangeable
501-4675792 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
87643-9804 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 57643-9804?
57643-9804 is a STOP,VALVE.
What parts can replace 57643-9804?
There are 21 known substitutes for 57643-9804: 4675792-0034, 87643-9804, 501-4675792 ITEM 34 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 57643-9804?
57643-9804 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-175-7727. 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