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Technical Data Sheet
PartsTable / COMPONENT / 1-1256-1-1/4IPT
1-1256-1-1/4IPT ✓ 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 1-1256-1-1/4IPT is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-013-9721, 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
1-1256-1-1/4IPT
NSN: 4820-01-013-9721
FSC: 4820
CAGE: 72352 — CURTISS-WRIGHT FLOW CONTROL CORPORATION DBA FARRIS ENGINEERING DIV CURTISS-WRIGHT VALVES DIVISION- FARRIS (USA)
SPECIFICATIONS
Part Number1-1256-1-1/4IPT
NSN4820-01-013-9721
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1-1256-1-1/4IPT · 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
•
RENEWABLE SEAT RING TYPE: PRESSED-IN
•
VALVE OPERATION METHOD: AUTOMATIC
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
DISK LOADING METHOD: SPRING
•
MATERIAL: COPPER ALLOY 360 BODY
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
OPERATING PRESSURE: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE BODY
TECHNICAL CHARACTERISTICS (FLIS)
RENEWABLE SEAT RING TYPEPRESSED-IN
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
DISK LOADING METHODSPRING
MATERIALCOPPER ALLOY 360 BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE BODY
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
SPECIAL FEATURESPORTED BRASS BALL IN SECONDARY OFIFICE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
41014Interchangeable
interchangeable cross-reference
interchangeable
7252042P1Interchangeable
interchangeable cross-reference
interchangeable
CV2601FSA52VInterchangeable
interchangeable cross-reference
interchangeable
T2500BInterchangeable
interchangeable cross-reference
interchangeable
110-1-4Interchangeable
interchangeable cross-reference
interchangeable
110-1/4SS(300)4727SEALInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1-1256-1-1/4IPT?
1-1256-1-1/4IPT is a 1-1256-1-1/4IPT.
What parts can replace 1-1256-1-1/4IPT?
There are 13 known substitutes for 1-1256-1-1/4IPT: 41014, 7252042P1, CV2601FSA52V and 10 more. Substitute compatibility should be verified for your specific system.
Is 1-1256-1-1/4IPT still available?
1-1256-1-1/4IPT 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