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NAP259 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NAP259: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400, valve_size: 2.000 INCHES IN, bonnet_type: INSIDE SCREW, flange_shape: ROUND WITH HOLES FIRST END, overall_height: 4.844 INCHES NOMINAL IN, connection_type: FLANGE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-306-1196, 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
NAP259
NSN: 4820-00-306-1196
NIINs: 003061196, 012731210
FSC: 4820 — Valves, Nonpowered
CAGE: 70667 — ATLAS VALVE CO (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400
valve_size2.000 INCHES IN
bonnet_typeINSIDE SCREW
flange_shapeROUND WITH HOLES FIRST END
overall_height4.844 INCHES NOMINAL IN
connection_typeFLANGE FIRST END
inside_diameter0.391 INCHES NOMINAL IN
outside_diameter2.000 INCHES NOMINAL IN
style_designatorSTRAIGHT THRU
mounting_facilityBRACKET(S)
flange_face_designPLAIN FIRST END
flow_control_devicePOPPET
NSN4820-00-306-1196
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NAP259 · 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
•
FLOW CONTROL DEVICE: POPPET
•
FLANGE SHAPE: ROUND WITH HOLES FIRST END
•
FLANGE FACE DESIGN: PLAIN FIRST END
•
CONNECTION TYPE: FLANGE FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
VALVE SIZE: 2.000 INCHES IN
•
BONNET TYPE: INSIDE SCREW
•
MOUNTING FACILITY: BRACKET(S)
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
FLANGE SHAPEROUND WITH HOLES FIRST END
FLANGE FACE DESIGNPLAIN FIRST END
CONNECTION TYPEFLANGE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
VALVE SIZE2.000 INCHES IN
BONNET TYPEINSIDE SCREW
MOUNTING FACILITYBRACKET(S)
BONNET ATTACHMENT METHODBOLTED
MATERIALCOPPER ALLOY 922 BODY
SUBSTITUTES & CROSS-REFERENCES 2
S4824H3115112Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ANAP259X7-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NAP259?
NAP259 is a DISK,VALVE.
What parts can replace NAP259?
There are 2 known substitutes for NAP259: S4824H3115112, ANAP259X7-001. Substitute compatibility should be verified for your specific system.
What is the NSN for NAP259?
NAP259 is cataloged in the U.S. Government catalog under NSN 4820-00-306-1196. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.