PartsTable
Technical Data Sheet
PartsTable / COMPONENT / FR121B2
FR121B2 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, style_designator: ANGLE, thread_direction: RIGHT-HAND SECOND END, operating_pressure: 430.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, disk_loading_method: SPRING, valve_operation_method: AUTOMATIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-019-9612, 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
FR121B2
NSN: 4820-00-019-9612
FSC: 4820
CAGE: 99251 — MISSION SYSTEMS DAVENPORT INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
style_designatorANGLE
thread_directionRIGHT-HAND SECOND END
operating_pressure430.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
valve_operation_methodAUTOMATIC
end_item_identificationACFT,TYPE B-52
media_for_which_designedOXYGEN, GASEOUS SINGLE RESPONSE
NSN4820-00-019-9612
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: FR121B2 · 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
•
THREAD DIRECTION: RIGHT-HAND SECOND END
•
DISK LOADING METHOD: SPRING
•
OPERATING PRESSURE: 430.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MEDIA FOR WHICH DESIGNED: OXYGEN, GASEOUS SINGLE RESPONSE
•
MATERIAL: ALUMINUM ALLOY BODY
•
STYLE DESIGNATOR: ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONACFT,TYPE B-52
THREAD DIRECTIONRIGHT-HAND SECOND END
DISK LOADING METHODSPRING
OPERATING PRESSURE430.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SINGLE RESPONSE
MATERIALALUMINUM ALLOY BODY
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST END
VALVE OPERATION METHODAUTOMATIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
10525-1Interchangeable
interchangeable cross-reference
interchangeable
21247Interchangeable
interchangeable cross-reference
interchangeable
8148650Interchangeable
interchangeable cross-reference
interchangeable
3208XIAInterchangeable
interchangeable cross-reference
interchangeable
903208Interchangeable
interchangeable cross-reference
interchangeable
30D86Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy FR121B2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is FR121B2?
FR121B2 is a BEARING,BALL,ANNULAR.
What parts can replace FR121B2?
There are 21 known substitutes for FR121B2: 10525-1, 21247, 8148650 and 18 more. Substitute compatibility should be verified for your specific system.
Is FR121B2 still available?
FR121B2 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — FR121B2

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026