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Technical Data Sheet
PartsTable / COMPONENT / U03 1.50INCH A-
U03 1.50INCH A- ✓ 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 U03 1.50INCH A- is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-203-3980, 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
U03 1.50INCH A-
NSN: 4820-00-203-3980
FSC: 4820
CAGE: 21368 — FAIRBANKS CO THE (USA)
SPECIFICATIONS
Part NumberU03 1.50INCH A-
NSN4820-00-203-3980
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: U03 1.50INCH A- · 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
•
MATERIAL: COPPER ALLOY 836 SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B-371 ALLOY C69400 ASSN STD SINGLE MATERIAL RESPONSE STEM
•
FEATURES PROVIDED: BONNET PACKING
•
FLOW CONTROL DEVICE: DISK
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SECOND RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 836 SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-371 ALLOY C69400 ASSN STD SINGLE MATERIAL RESPONSE STEM
FEATURES PROVIDEDBONNET PACKING
FLOW CONTROL DEVICEDISK
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-371 ALLOY C69400 ASSN STD SINGLE MATERIAL RESPONSE STEM
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SECOND RESPONSE DEGF
MATERIALCOPPER ALLOY 694 STEM
MAXIMUM OPERATING TEMP406.0 FAHRENHEIT FIRST RESPONSE DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
IB-454-3-4INInterchangeable
interchangeable cross-reference
interchangeable
50628Interchangeable
interchangeable cross-reference
interchangeable
96Interchangeable
interchangeable cross-reference
interchangeable
1220K1PC98-99Interchangeable
interchangeable cross-reference
interchangeable
B2-2-2Interchangeable
interchangeable cross-reference
interchangeable
1066363-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U03 1.50INCH A-?
U03 1.50INCH A- is a U03 1.50INCH A-.
What parts can replace U03 1.50INCH A-?
There are 17 known substitutes for U03 1.50INCH A-: IB-454-3-4IN, 50628, 96 and 14 more. Substitute compatibility should be verified for your specific system.
Is U03 1.50INCH A- still available?
U03 1.50INCH A- 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