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Technical Data Sheet
PartsTable / COMPONENT / B2556.001.123
B2556.001.123 ✓ 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 B2556.001.123 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 4820-01-194-2167, 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
B2556.001.123
NSN: 4820-01-194-2167
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
Part NumberB2556.001.123
NSN4820-01-194-2167
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B2556.001.123 · 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
•
STYLE DESIGNATOR: POPPET
•
TEMP RATING: 400.0 FAHRENHEIT NOMINAL DEGF
•
PRESSURE RATING: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
STYLE DESIGNATORPOPPET
TEMP RATING400.0 FAHRENHEIT NOMINAL DEGF
PRESSURE RATING150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
31183Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-296Interchangeable
interchangeable cross-reference
interchangeable
31-243-BInterchangeable
interchangeable cross-reference
interchangeable
A77312Interchangeable
interchangeable cross-reference
interchangeable
3118-3.125 ITEM 2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B2556.001.123?
B2556.001.123 is a B2556.001.123.
What parts can replace B2556.001.123?
There are 5 known substitutes for B2556.001.123: 31183, GGG-D-296, 31-243-B and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B2556.001.123?
B2556.001.123 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-194-2167. 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