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Technical Data Sheet
PartsTable / COMPONENT / B5543-1
B5543-1 ✓ 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 OVERALL, flange_diameter: 0.735 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.055 INCHES NOMINAL IN, body_inside_diameter: 0.378 INCHES NOMINAL IN, body_outside_diameter: 0.562 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 4820-00-925-4326, 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
B5543-1
NSN: 4820-00-925-4326
FSC: 4820
CAGE: 45543 — SNAP-TITE INC DBA SNAP TITE SOLENOID VALVE DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter0.735 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.055 INCHES NOMINAL IN
body_inside_diameter0.378 INCHES NOMINAL IN
body_outside_diameter0.562 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.070 INCHES NOMINAL IN
NSN4820-00-925-4326
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B5543-1 · 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
•
SEATING SURFACE SHAPE: FLAT
•
UNDER FLANGE HEIGHT: 0.055 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.070 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.378 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
FLANGE DIAMETER: 0.735 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SEATING SURFACE SHAPEFLAT
UNDER FLANGE HEIGHT0.055 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.070 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.378 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORPLAIN FLANGED
FLANGE DIAMETER0.735 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
5518Interchangeable
interchangeable cross-reference
interchangeable
111607Interchangeable
interchangeable cross-reference
interchangeable
BK10572Interchangeable
interchangeable cross-reference
interchangeable
35-18042YInterchangeable
interchangeable cross-reference
interchangeable
50029Interchangeable
interchangeable cross-reference
interchangeable
1-1160-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B5543-1?
B5543-1 is a SEAT,VALVE.
What parts can replace B5543-1?
There are 6 known substitutes for B5543-1: 5518, 111607, BK10572 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B5543-1?
B5543-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-925-4326. 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