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PartsTable / COMPONENT / F254B-PIECE61
F254B-PIECE61 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, flange_diameter: 2.782 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 45.000 NOMINAL, under_flange_height: 0.562 INCHES NOMINAL IN, body_inside_diameter: 1.553 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 4820-01-120-8271, 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
F254B-PIECE61
NSN: 4820-01-120-8271
FSC: 4820
CAGE: 77081 — INGERSOLL-DRESSER PUMP CO (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
flange_diameter2.782 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
seat_angle_in_deg45.000 NOMINAL
under_flange_height0.562 INCHES NOMINAL IN
body_inside_diameter1.553 INCHES NOMINAL IN
body_outside_diameter2.628 INCHES NOMINAL IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.375 INCHES NOMINAL IN
NSN4820-01-120-8271
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: F254B-PIECE61 · 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: 1.553 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL: STEEL COMP 304 OVERALL
•
FLANGE SEAT TO DISK END HEIGHT: 0.375 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 2.628 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.782 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER1.553 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.000 NOMINAL
STYLE DESIGNATORPLAIN FLANGED
SEATING SURFACE SHAPEANGULAR
MATERIALSTEEL COMP 304 OVERALL
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.628 INCHES NOMINAL IN
FLANGE DIAMETER2.782 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
F254B-PIECE253Interchangeable
interchangeable cross-reference
interchangeable
TA263-6-0Interchangeable
interchangeable cross-reference
interchangeable
F254BInterchangeable
interchangeable cross-reference
interchangeable
TB0170Interchangeable
interchangeable cross-reference
interchangeable
TB170Interchangeable
interchangeable cross-reference
interchangeable
F254B-PIECE82Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F254B-PIECE61?
F254B-PIECE61 is a SEAT,VALVE.
What parts can replace F254B-PIECE61?
There are 13 known substitutes for F254B-PIECE61: F254B-PIECE253, TA263-6-0, F254B and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F254B-PIECE61?
F254B-PIECE61 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-120-8271. 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