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PartsTable / COMPONENT / 554Y 1-1/4IN
554Y 1-1/4IN ✓ 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 554Y 1-1/4IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-446-3505, 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
554Y 1-1/4IN
NSN: 4820-00-446-3505
FSC: 4820
CAGE: 37239 — LUNKENHEIMER CO (USA)
SPECIFICATIONS
Part Number554Y 1-1/4IN
NSN4820-00-446-3505
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 554Y 1-1/4IN · 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
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
MINIMUM OPERATING TEMP: -20.0 FAHRENHEIT DEGF
•
MATERIAL: COPPER ALLOY 922 FLOW CONTROL DEVICE
•
THREAD SERIES DESIGNATOR: NPTF ALL ENDS
•
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
•
STYLE DESIGNATOR: STRAIGHT THRU
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
MINIMUM OPERATING TEMP-20.0 FAHRENHEIT DEGF
MATERIALCOPPER ALLOY 922 FLOW CONTROL DEVICE
THREAD SERIES DESIGNATORNPTF ALL ENDS
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MATERIALCOPPER ALLOY 922 BODY
STYLE DESIGNATORSTRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATIONASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE BODY
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
L100J150Interchangeable
interchangeable cross-reference
interchangeable
270-100-0605Interchangeable
interchangeable cross-reference
interchangeable
0605Interchangeable
interchangeable cross-reference
interchangeable
02665PInterchangeable
interchangeable cross-reference
interchangeable
TVC60000Interchangeable
interchangeable cross-reference
interchangeable
TVCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 554Y 1-1/4IN?
554Y 1-1/4IN is a 554Y 1-1/4IN.
What parts can replace 554Y 1-1/4IN?
There are 31 known substitutes for 554Y 1-1/4IN: L100J150, 270-100-0605, 0605 and 28 more. Substitute compatibility should be verified for your specific system.
Is 554Y 1-1/4IN still available?
554Y 1-1/4IN 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