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Technical Data Sheet
PartsTable / COMPONENT / AA59440/4-019
AA59440/4-019 ✓ 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 AA59440/4-019 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-057-0694, 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
AA59440/4-019
NSN: 4820-00-057-0694
FSC: 4820
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberAA59440/4-019
NSN4820-00-057-0694
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: AA59440/4-019 · 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
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
MEDIA FOR WHICH DESIGNED: STEAM SINGLE RESPONSE
•
VALVE OPERATION METHOD: MANUAL
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
FLOW CONTROL DEVICE: PLUG
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
VALVE OPERATION METHODMANUAL
CONNECTION STYLEPLAIN (PIPE) FIRST END
FLOW CONTROL DEVICEPLUG
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY B5/D FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE AND QQ-B-626,ALLOY 360 FED SPEC 3RD MATERIAL RESPONSE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
301803R91Interchangeable
interchangeable cross-reference
interchangeable
7524043Interchangeable
interchangeable cross-reference
interchangeable
44Z1233D1Interchangeable
interchangeable cross-reference
interchangeable
A-A-59440/4-015Interchangeable
interchangeable cross-reference
interchangeable
42EInterchangeable
interchangeable cross-reference
interchangeable
A-A-59440/4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA59440/4-019?
AA59440/4-019 is a AA59440/4-019.
What parts can replace AA59440/4-019?
There are 31 known substitutes for AA59440/4-019: 301803R91, 7524043, 44Z1233D1 and 28 more. Substitute compatibility should be verified for your specific system.
Is AA59440/4-019 still available?
AA59440/4-019 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