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PartsTable / COMPONENT / CV9-S4501-026-18
CV9-S4501-026-18 ✓ 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, overall_length: 8.625 INCHES NOMINAL IN, stem_actuating_end_type: THREADED EXTERNALLY, largest_outside_diameter: 0.625 INCHES NOMINAL IN, valve_size_for_which_designed: 1.250 INCHES IN, valve_type_for_which_designed: RELIEF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-251-5290, 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
CV9-S4501-026-18
NSN: 4820-01-251-5290
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length8.625 INCHES NOMINAL IN
stem_actuating_end_typeTHREADED EXTERNALLY
largest_outside_diameter0.625 INCHES NOMINAL IN
valve_size_for_which_designed1.250 INCHES IN
valve_type_for_which_designedRELIEF
NSN4820-01-251-5290
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CV9-S4501-026-18 · 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
•
LARGEST OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
VALVE TYPE FOR WHICH DESIGNED: RELIEF
•
VALVE SIZE FOR WHICH DESIGNED: 1.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
LARGEST OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
OVERALL LENGTH8.625 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
VALVE TYPE FOR WHICH DESIGNEDRELIEF
VALVE SIZE FOR WHICH DESIGNED1.250 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
19871-2Interchangeable
interchangeable cross-reference
interchangeable
8333189Interchangeable
interchangeable cross-reference
interchangeable
19-87-1Interchangeable
interchangeable cross-reference
interchangeable
CV9-S4501-026-20Interchangeable
interchangeable cross-reference
interchangeable
CV9-S4501-026Interchangeable
interchangeable cross-reference
interchangeable
CV9-S4501-026-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CV9-S4501-026-18?
CV9-S4501-026-18 is a STEM,FLUID VALVE.
What parts can replace CV9-S4501-026-18?
There are 11 known substitutes for CV9-S4501-026-18: 19871-2, 8333189, 19-87-1 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CV9-S4501-026-18?
CV9-S4501-026-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-251-5290. 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