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2256577 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2256577: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY STEM, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS, operating_pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-735-6794, 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
2256577
NSN: 4820-00-735-6794
NIINs: 007356794, 009048990
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY STEM
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
nominal_thread_size0.500 INCHES ALL ENDS IN
maximum_operating_temp100.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
furnished_items_and_quantity1 HANDLE
NSN4820-00-735-6794
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2256577 · 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
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) FIRST END
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
BONNET TYPE: OUTSIDE SCREW-YOKE
•
BONNET ATTACHMENT METHOD: BOLTED
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
BONNET TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORNPT FIRST END
VALVE OPERATION METHODMANUAL
SUBSTITUTES & CROSS-REFERENCES 1
2256577PC1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2256577?
2256577 is a VALVE,BALL.
What parts can replace 2256577?
There is 1 known substitute for 2256577: 2256577PC1. Substitute compatibility should be verified for your specific system.
What is the NSN for 2256577?
2256577 is cataloged in the U.S. Government catalog under NSN 4820-00-735-6794. 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.