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Technical Data Sheet
PartsTable / COMPONENT / 25866ALT12PCN
25866ALT12PCN ✓ 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 VALVE,GLOBE is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-369-3233, 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
25866ALT12PCN
NSN: 4820-00-369-3233
FSC: 4820
CAGE: 81316 — PORTSMOUTH NAVAL SHIPYARD (USA)
SPECIFICATIONS
Part Number25866ALT12PCN
NSN4820-00-369-3233
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 25866ALT12PCN · 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
•
FSC APPLICATION DATA: VALVE ANL 3.00IPS
TECHNICAL CHARACTERISTICS (FLIS)
FSC APPLICATION DATAVALVE ANL 3.00IPS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
VT4Interchangeable
interchangeable cross-reference
interchangeable
55-149Interchangeable
interchangeable cross-reference
interchangeable
VT4AInterchangeable
interchangeable cross-reference
interchangeable
55129Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25866ALT12PCN?
25866ALT12PCN is a VALVE,GLOBE.
What parts can replace 25866ALT12PCN?
There are 4 known substitutes for 25866ALT12PCN: VT4, 55-149, VT4A and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25866ALT12PCN?
25866ALT12PCN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-369-3233. 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