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PartsTable / COMPONENT / D-1866 PIECE 13 3IN B
D-1866 PIECE 13 3IN B ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: IRREGULAR, overall_width: 4.38 INCHES NOMINAL IN, overall_height: 3.53 INCHES NOMINAL IN, overall_length: 5.0 INCHES NOMINAL IN, connection_type: BUTT WELD PIPE ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-073-5845, 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
D-1866 PIECE 13 3IN B
NSN: 4820-01-073-5845
FSC: 4820
CAGE: 34889 — HUNT VALVE COMPANY INC DBA UNION FLONETICS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleIRREGULAR
overall_width4.38 INCHES NOMINAL IN
overall_height3.53 INCHES NOMINAL IN
overall_length5.0 INCHES NOMINAL IN
connection_typeBUTT WELD PIPE ALL ENDS
connection_styleBEVELED (PIPE) ALL ENDS
outside_diameter3.750 INCHES NOMINAL IN
special_featuresSTEM GUIDE POST ON ONE SIDE
style_designatorSTRAIGHT THRU
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NSN4820-01-073-5845
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D-1866 PIECE 13 3IN B · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
501B1884Interchangeable
interchangeable cross-reference
interchangeable
7408089PT7Interchangeable
interchangeable cross-reference
interchangeable
B115N030Interchangeable
interchangeable cross-reference
interchangeable
D-1866 PC 3 3IN BInterchangeable
interchangeable cross-reference
interchangeable
D1866 PIECE 3 3Interchangeable
interchangeable cross-reference
interchangeable
D-1866 PIECE 3 3IN BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D-1866 PIECE 13 3IN B?
D-1866 PIECE 13 3IN B is a SEAT,VALVE.
What parts can replace D-1866 PIECE 13 3IN B?
There are 16 known substitutes for D-1866 PIECE 13 3IN B: 501B1884, 7408089PT7, B115N030 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D-1866 PIECE 13 3IN B?
D-1866 PIECE 13 3IN B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-073-5845. 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