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PartsTable / COMPONENT / 1889587 ASSY CF 1 1/4IN
1889587 ASSY CF 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 1889587 ASSY CF 1 1/4IN is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-127-3012, 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
1889587 ASSY CF 1 1/4IN
NSN: 4820-01-127-3012
FSC: 4820
CAGE: 90664 — WALWORTH CO MARINE DIV (USA)
SPECIFICATIONS
Part Number1889587 ASSY CF 1 1/4IN
NSN4820-01-127-3012
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1889587 ASSY CF 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 TYPE: UNTHREADED INTERNAL PIPE ALL ENDS
•
MATERIAL: NICKEL ALLOY AND PLASTIC POLYCHLOROTRIFLUOROETHYLENE FLOW CONTROL DEVICE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT
•
RENEWABLE SEAT RING TYPE: THREADED
•
BONNET TYPE: INSIDE SCREW
•
NOMINAL PIPE SIZE ACCOMMODATED: 1.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
MATERIALNICKEL ALLOY AND PLASTIC POLYCHLOROTRIFLUOROETHYLENE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT
RENEWABLE SEAT RING TYPETHREADED
BONNET TYPEINSIDE SCREW
NOMINAL PIPE SIZE ACCOMMODATED1.250 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE DEGF
VALVE OPERATION METHODMANUAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
C38476Interchangeable
interchangeable cross-reference
interchangeable
SS845-1889587Interchangeable
interchangeable cross-reference
interchangeable
SC3549 3-4INInterchangeable
interchangeable cross-reference
interchangeable
2620-902 ASSY CInterchangeable
interchangeable cross-reference
interchangeable
845-1889587ASSYCFInterchangeable
interchangeable cross-reference
interchangeable
2620-902Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1889587 ASSY CF 1 1/4IN?
1889587 ASSY CF 1 1/4IN is a 1889587 ASSY CF 1 1/4IN.
What parts can replace 1889587 ASSY CF 1 1/4IN?
There are 26 known substitutes for 1889587 ASSY CF 1 1/4IN: C38476, SS845-1889587, SC3549 3-4IN and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1889587 ASSY CF 1 1/4IN?
1889587 ASSY CF 1 1/4IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-127-3012. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026