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Technical Data Sheet
PartsTable / COMPONENT / D3-25
D3-25 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: GERMANIUM SEMICONDUCTOR, mounting_method: TERMINAL, outside_diameter: 3.420 INCHES NOMINAL IN, style_designator: FLAT, features_provided: HERMETICALLY SEALED CASE, material_thickness: 0.008 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-075-7482, 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
D3-25
NSN: 4820-00-075-7482
FSC: 4820
CAGE: 38683 — DRESSER INDUSTRIES INC MASONEILAN NORTH AMERICAN OPNS DRESSER VALVE AND CONTROLS DIV (USA)
SPECIFICATIONS
materialGERMANIUM SEMICONDUCTOR
mounting_methodTERMINAL
outside_diameter3.420 INCHES NOMINAL IN
style_designatorFLAT
features_providedHERMETICALLY SEALED CASE
material_thickness0.008 INCHES NOMINAL IN
terminal_type_and_quantity2 UNINSULATED WIRE LEAD
NSN4820-00-075-7482
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D3-25 · 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
•
OUTSIDE DIAMETER: 3.420 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY 510
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.008 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER3.420 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 510
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.008 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
GD394Interchangeable
interchangeable cross-reference
interchangeable
G331Interchangeable
interchangeable cross-reference
interchangeable
4907929-00Interchangeable
interchangeable cross-reference
interchangeable
32515-1Interchangeable
interchangeable cross-reference
interchangeable
32515Interchangeable
interchangeable cross-reference
interchangeable
00003-025-151A0000Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D3-25?
D3-25 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace D3-25?
There are 8 known substitutes for D3-25: GD394, G331, 4907929-00 and 5 more. Substitute compatibility should be verified for your specific system.
Is D3-25 still available?
D3-25 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026