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B525-3025 — DECK BOX OPERATOR,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B525-3025: DECK BOX OPERATOR,VALVE.

The DECK BOX OPERATOR,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 4.000 INCHES NOMINAL IN, housing_diameter: 3.500 INCHES NOMINAL IN, features_provided: INDICATOR GAGE, mounting_facility: SEMIFLUSH, end_item_identification: SEAWOLF CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-515-7147, 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
B525-3025
NSN: 4820-01-515-7147
NIINs: 015157147, 015157160, 015159296, 015159300, 015159302, 015159303, 015159305
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length4.000 INCHES NOMINAL IN
housing_diameter3.500 INCHES NOMINAL IN
features_providedINDICATOR GAGE
mounting_facilitySEMIFLUSH
end_item_identificationSEAWOLF CLASS SSN
mounting_flange_diameter4.750 INCHES NOMINAL IN
flange_bolt_hole_diameter0.250 INCHES NOMINAL IN
mechanical_connection_typeRIGID SHAFT
mounting_flange_bolt_hole_quantity4
part_name_assigned_by_controlling_agencyMANUAL REMOTE OPERATOR VH-42
NSN4820-01-515-7147
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B525-3025 · 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
•
FEATURES PROVIDED: INDICATOR GAGE
TECHNICAL CHARACTERISTICS
FEATURES PROVIDEDINDICATOR GAGE
PART NAME ASSIGNED BY CONTROLLING AGENCYMANUAL REMOTE OPERATOR VH-40
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
SUBSTITUTES & CROSS-REFERENCES 2
B525-3025-A1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7409899Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is B525-3025?
B525-3025 is a DECK BOX OPERATOR,VALVE.
What parts can replace B525-3025?
There are 2 known substitutes for B525-3025: B525-3025-A1, 7409899. Substitute compatibility should be verified for your specific system.
What is the NSN for B525-3025?
B525-3025 is cataloged in the U.S. Government catalog under NSN 4820-01-515-7147. 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.