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PartsTable / COMPONENT / D1866 PIECE 3 3
D1866 PIECE 3 3 ✓ 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: TITANIUM ALLOY, overall_height: 0.500 INCHES NOMINAL IN, outside_diameter: 3.750 INCHES NOMINAL IN, special_features: STEM GUIDE POST ON ONE SIDE, style_designator: SOLID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-073-6391, 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
D1866 PIECE 3 3
NSN: 4820-01-073-6391
FSC: 4820
CAGE: 17062 — P J VALVES INC (USA)
SPECIFICATIONS
materialTITANIUM ALLOY
overall_height0.500 INCHES NOMINAL IN
outside_diameter3.750 INCHES NOMINAL IN
special_featuresSTEM GUIDE POST ON ONE SIDE
style_designatorSOLID
NSN4820-01-073-6391
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D1866 PIECE 3 3 · 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: 3.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID
•
MATERIAL: TITANIUM ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
OVERALL HEIGHT0.500 INCHES NOMINAL IN
STYLE DESIGNATORSOLID
MATERIALTITANIUM ALLOY
SPECIAL FEATURESSTEM GUIDE POST ON ONE SIDE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
BP62969Interchangeable
interchangeable cross-reference
interchangeable
1887-657Interchangeable
interchangeable cross-reference
interchangeable
B1889Interchangeable
interchangeable cross-reference
interchangeable
D-1866 PIECE 13 3IN BInterchangeable
interchangeable cross-reference
interchangeable
D1866 PIECE 13Interchangeable
interchangeable cross-reference
interchangeable
D1866 PIECE 4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D1866 PIECE 3 3?
D1866 PIECE 3 3 is a DISK,VALVE.
What parts can replace D1866 PIECE 3 3?
There are 12 known substitutes for D1866 PIECE 3 3: BP62969, 1887-657, B1889 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D1866 PIECE 3 3?
D1866 PIECE 3 3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-073-6391. 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