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PartsTable / COMPONENT / YB2318A221
YB2318A221 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: COPPER ALLOY 922 BODY, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, body_style: STRAIGHT THRU, furnished_items: TAILPIECE AND UNION NUT, inside_diameter: 0.0380 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-407-2964, 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
YB2318A221
NSN: 4820-01-407-2964
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialCOPPER ALLOY 922 BODY
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
body_styleSTRAIGHT THRU
coil_quantity9
furnished_itemsTAILPIECE AND UNION NUT
inside_diameter0.0380 INCHES NOMINAL IN
mounting_methodSADDLESADDLE
regulation_typeAUTOMATIC SINGLE STAGE
style_designatorCYLINDRICAL
polarization_typeCONTACT POSITIONCONTACT POSITION
surface_treatmentCADMIUM OVERALL
NSN4820-01-407-2964
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: YB2318A221 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
N451PC161Interchangeable
interchangeable cross-reference
interchangeable
N513Interchangeable
interchangeable cross-reference
interchangeable
N565Interchangeable
interchangeable cross-reference
interchangeable
54A11897Interchangeable
interchangeable cross-reference
interchangeable
N522Interchangeable
interchangeable cross-reference
interchangeable
2C7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is YB2318A221?
YB2318A221 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace YB2318A221?
There are 24 known substitutes for YB2318A221: N451PC161, N513, N565 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for YB2318A221?
YB2318A221 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-407-2964. 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