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Technical Data Sheet
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255669 ✓ 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 PARTS KIT,BALL VALVE is a the manufacturer industrial component. Key specifications include supply_items_and_quantities: BALL 1;SEAT 1. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-799-7060, 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
255669
NSN: 4820-00-799-7060
FSC: 4820
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
component_quantity2
supply_items_and_quantitiesBALL 1;SEAT 1
NSN4820-00-799-7060
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 255669 · 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
•
SEATING SURFACE SHAPE: RADIAL
•
BODY INSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY OUTSIDE DIAMETER: 1.755 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
SEAT RADIUS: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEATING SURFACE SHAPERADIAL
BODY INSIDE DIAMETER1.000 INCHES NOMINAL IN
OVERALL HEIGHT0.312 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY OUTSIDE DIAMETER1.755 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
SEAT RADIUS0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
149-044-0002Interchangeable
interchangeable cross-reference
interchangeable
2009Interchangeable
interchangeable cross-reference
interchangeable
X2051BInterchangeable
interchangeable cross-reference
interchangeable
259089Interchangeable
interchangeable cross-reference
interchangeable
259046Interchangeable
interchangeable cross-reference
interchangeable
259046PC10/255669PC3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 255669?
255669 is a PARTS KIT,BALL VALVE.
What parts can replace 255669?
There are 16 known substitutes for 255669: 149-044-0002, 2009, X2051B and 13 more. Substitute compatibility should be verified for your specific system.
Is 255669 still available?
255669 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