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Technical Data Sheet
PartsTable / COMPONENT / 481-1/4B1-2
481-1/4B1-2 ✓ 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 481-1/4B1-2 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 4820-01-153-1399, 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
481-1/4B1-2
NSN: 4820-01-153-1399
FSC: 4820
CAGE: 09990 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC VALVE DIVISION (USA)
SPECIFICATIONS
Part Number481-1/4B1-2
NSN4820-01-153-1399
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 481-1/4B1-2 · 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 STYLE: PLAIN (PIPE) FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN (PIPE) FIRST END
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) SECOND END
MATERIALCOPPER ALLOY BODY
FLOW CONTROL DEVICEPOPPET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
WGFC12300Interchangeable
interchangeable cross-reference
interchangeable
F12300Interchangeable
interchangeable cross-reference
interchangeable
FC12300Interchangeable
interchangeable cross-reference
interchangeable
KC12300Interchangeable
Same NIIN cross-reference
interchangeable
481-1/4B2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 481-1/4B1-2?
481-1/4B1-2 is a 481-1/4B1-2.
What parts can replace 481-1/4B1-2?
There are 5 known substitutes for 481-1/4B1-2: WGFC12300, F12300, FC12300 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 481-1/4B1-2?
481-1/4B1-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-153-1399. 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