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PartsTable / COMPONENT / IOM-123-0.50IN
IOM-123-0.50IN ✓ 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 IOM-123-0.50IN 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 4820-00-430-3710, 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
IOM-123-0.50IN
NSN: 4820-00-430-3710
FSC: 4820
CAGE: 88078 — CASHCO INC (USA)
SPECIFICATIONS
Part NumberIOM-123-0.50IN
NSN4820-00-430-3710
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: IOM-123-0.50IN · 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
•
BODY INSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: PLAIN
•
BODY OUTSIDE DIAMETER: 0.742 INCHES MINIMUM AND 0.743 INCHES MAXIMUM IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.500 INCHES NOMINAL IN
OVERALL HEIGHT0.500 INCHES NOMINAL IN
SEATING SURFACE SHAPEANGULAR
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORPLAIN
BODY OUTSIDE DIAMETER0.742 INCHES MINIMUM AND 0.743 INCHES MAXIMUM IN
SEAT ANGLE IN DEG45.000 NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
97-98Interchangeable
interchangeable cross-reference
interchangeable
Y25-3Interchangeable
interchangeable cross-reference
interchangeable
ST49D5Interchangeable
interchangeable cross-reference
interchangeable
123473-1Interchangeable
interchangeable cross-reference
interchangeable
502120Interchangeable
interchangeable cross-reference
interchangeable
17B2A3825-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IOM-123-0.50IN?
IOM-123-0.50IN is a IOM-123-0.50IN.
What parts can replace IOM-123-0.50IN?
There are 8 known substitutes for IOM-123-0.50IN: 97-98, Y25-3, ST49D5 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for IOM-123-0.50IN?
IOM-123-0.50IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-430-3710. 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