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BR-3 ✓ 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: COPPER ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.188 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 0.660 INCHES NOMINAL IN, style_designator: FAUCET, nominal_thread_size: 0.562 INCHES SINGLE THREADED PORTION 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 4810-00-158-3261, 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
BR-3
NSN: 4810-00-158-3261
FSC: 4810
CAGE: 80850 — INTERLINE BRANDS, INC. DBA J. A. SEXAUER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.188 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter0.660 INCHES NOMINAL IN
style_designatorFAUCET
nominal_thread_size0.562 INCHES SINGLE THREADED PORTION IN
under_flange_height0.250 INCHES NOMINAL IN
body_inside_diameter0.295 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch20 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.134 INCHES NOMINAL IN
NSN4810-00-158-3261
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: BR-3 · 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 CLASS: 2A SINGLE THREADED PORTION A
•
FLANGE SEAT TO DISK END HEIGHT: 0.134 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.660 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.250 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
BODY INSIDE DIAMETER: 0.295 INCHES NOMINAL IN
•
THREAD LENGTH: 0.188 INCHES NOMINAL SINGLE THREADED PORTION IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A SINGLE THREADED PORTION A
FLANGE SEAT TO DISK END HEIGHT0.134 INCHES NOMINAL IN
FLANGE DIAMETER0.660 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.250 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
BODY INSIDE DIAMETER0.295 INCHES NOMINAL IN
THREAD LENGTH0.188 INCHES NOMINAL SINGLE THREADED PORTION IN
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
NOMINAL THREAD SIZE0.562 INCHES SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
7139Interchangeable
interchangeable cross-reference
interchangeable
PA7139Interchangeable
interchangeable cross-reference
interchangeable
E2884PC176Interchangeable
interchangeable cross-reference
interchangeable
E2876PC176Interchangeable
interchangeable cross-reference
interchangeable
CX2677FRR34Interchangeable
interchangeable cross-reference
interchangeable
540-1315-003Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BR-3?
BR-3 is a SEAT,VALVE.
What parts can replace BR-3?
There are 14 known substitutes for BR-3: 7139, PA7139, E2884PC176 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BR-3?
BR-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-158-3261. 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