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Technical Data Sheet
PartsTable / COMPONENT / 548 1-1/4IN
548 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 548 1-1/4IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-287-4447, 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
548 1-1/4IN
NSN: 4820-00-287-4447
FSC: 4820
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
Part Number548 1-1/4IN
NSN4820-00-287-4447
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 548 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
•
MOUNTING POSITION: VERTICAL
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
FLOW CONTROL DEVICE: DISK
•
NOMINAL THREAD SIZE: 1.250 INCHES ALL ENDS IN
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SECOND RESPONSE
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOY B5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING POSITIONVERTICAL
THREAD DIRECTIONRIGHT-HAND ALL ENDS
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
FLOW CONTROL DEVICEDISK
NOMINAL THREAD SIZE1.250 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
THREAD SERIES DESIGNATORNPT ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY B5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALCOPPER ALLOY 836 BODY
STYLE DESIGNATORSTRAIGHT THRU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
375-1-1-4Interchangeable
interchangeable cross-reference
interchangeable
50357Interchangeable
interchangeable cross-reference
interchangeable
SCB69694Interchangeable
interchangeable cross-reference
interchangeable
FIG75Interchangeable
interchangeable cross-reference
interchangeable
X198Interchangeable
interchangeable cross-reference
interchangeable
X00198Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 548 1-1/4IN?
548 1-1/4IN is a 548 1-1/4IN.
What parts can replace 548 1-1/4IN?
There are 17 known substitutes for 548 1-1/4IN: 375-1-1-4, 50357, SCB69694 and 14 more. Substitute compatibility should be verified for your specific system.
Is 548 1-1/4IN still available?
548 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