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Technical Data Sheet
PartsTable / COMPONENT / 49U-1/4IN
49U-1/4IN ✓ 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 49U-1/4IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-288-7232, 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
49U-1/4IN
NSN: 4820-00-288-7232
FSC: 4820
CAGE: 75144 — JENKINS BROS (USA)
SPECIFICATIONS
Part Number49U-1/4IN
NSN4820-00-288-7232
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 49U-1/4IN · 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 DOCUMENT AND CLASSIFICATION: ASTM B-371 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE STEM
•
MATERIAL: COPPER ALLOY 694 STEM
•
VALVE OPERATION METHOD: MANUAL
•
FEATURES PROVIDED: BONNET PACKING
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-371 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE STEM
MATERIALCOPPER ALLOY 694 STEM
MATERIALCOPPER ALLOY 836 DISK
VALVE OPERATION METHODMANUAL
FEATURES PROVIDEDBONNET PACKING
NOMINAL THREAD SIZE0.250 INCHES IN
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
MATERIALCOPPER ALLOY 836 BODY
PRESSURE CLASSERR-060
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 36
131-1001-34Interchangeable
interchangeable cross-reference
interchangeable
251-11-30-161Interchangeable
interchangeable cross-reference
interchangeable
131-34Interchangeable
interchangeable cross-reference
interchangeable
140-1578-02-01-00Interchangeable
interchangeable cross-reference
interchangeable
1578-2Interchangeable
interchangeable cross-reference
interchangeable
1391B-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 49U-1/4IN?
49U-1/4IN is a 49U-1/4IN.
What parts can replace 49U-1/4IN?
There are 36 known substitutes for 49U-1/4IN: 131-1001-34, 251-11-30-161, 131-34 and 33 more. Substitute compatibility should be verified for your specific system.
Is 49U-1/4IN still available?
49U-1/4IN 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