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Technical Data Sheet
PartsTable / COMPONENT / 87643-7504
87643-7504 ✓ 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 GEAR,DRIVE,VENT VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, end_similarity: IDENTICAL, first_end_style: PLAIN, end_item_identification: GENERAL DYNAMICS 13 IN. BHD VENT VALVE IN, general_characteristics_item_description: NICKEL-COPPER; 18 TEETH; O/A OD 3.332 IN.; THK 1.750 IN.

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 4820-01-103-3325, 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
87643-7504
NSN: 4820-01-103-3325
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
end_similarityIDENTICAL
first_end_stylePLAIN
end_item_identificationGENERAL DYNAMICS 13 IN. BHD VENT VALVE IN
general_characteristics_item_descriptionNICKEL-COPPER; 18 TEETH; O/A OD 3.332 IN.; THK 1.750 IN. IN
NSN4820-01-103-3325
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 87643-7504 · 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,QQ-N-281,CLASS A,ANNEALED; 13.250 IN. OD,2.000 IN. ID,0.750 IN. THK; WITH NINE 0.281 IN. HOLES EQUALLY SPACED AROUND THE OUTSIDE EDGE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL-COPPER,QQ-N-281,CLASS A,ANNEALED; 13.250 IN. OD,2.000 IN. ID,0.750 IN. THK; WITH NINE 0.281 IN. HOLES EQUALLY SPACED AROUND THE OUTSIDE EDGE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
501-4675698 ITEInterchangeable
interchangeable cross-reference
interchangeable
501-4675698 ITEM 14Interchangeable
interchangeable cross-reference
interchangeable
501-4675698 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
501-4675696Interchangeable
interchangeable cross-reference
interchangeable
501-4675698Interchangeable
interchangeable cross-reference
interchangeable
501-4675698 ITEM 13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 87643-7504?
87643-7504 is a GEAR,DRIVE,VENT VALVE.
What parts can replace 87643-7504?
There are 19 known substitutes for 87643-7504: 501-4675698 ITE, 501-4675698 ITEM 14, 501-4675698 ITEM 8 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 87643-7504?
87643-7504 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-103-3325. 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