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N-498 PIECE 15 — Technical Data Sheet

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— · 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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.218 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.812 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 1.625 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-139-9886, 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
N-498 PIECE 15
NSN: 4820-01-139-9886
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.218 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.812 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size1.625 INCHES SINGLE THREADED PORTION IN
under_flange_height0.500 INCHES NOMINAL IN
body_inside_diameter1.250 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch14 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.125 INCHES NOMINAL IN
NSN4820-01-139-9886
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N-498 PIECE 15 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.125 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.812 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
•
NOMINAL THREAD SIZE: 1.625 INCHES SINGLE THREADED PORTION IN
•
THREAD LENGTH: 0.218 INCHES NOMINAL SINGLE THREADED PORTION IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE SEAT TO DISK END HEIGHT0.125 INCHES NOMINAL IN
FLANGE DIAMETER1.812 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
THREAD CLASS2A SINGLE THREADED PORTION A
NOMINAL THREAD SIZE1.625 INCHES SINGLE THREADED PORTION IN
THREAD LENGTH0.218 INCHES NOMINAL SINGLE THREADED PORTION IN
SEATING SURFACE SHAPEFLAT
BODY INSIDE DIAMETER1.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
291247Interchangeable
interchangeable cross-reference
interchangeable
N464Interchangeable
interchangeable cross-reference
interchangeable
58800Z72Interchangeable
interchangeable cross-reference
interchangeable
N-464 PC 17Interchangeable
interchangeable cross-reference
interchangeable
229-649-45Interchangeable
interchangeable cross-reference
interchangeable
22964942Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N-498 PIECE 15?
N-498 PIECE 15 is a RELAY,ELECTROMAGNETIC.
What parts can replace N-498 PIECE 15?
There are 12 known substitutes for N-498 PIECE 15: 291247, N464, 58800Z72 and 9 more. Substitute compatibility should be verified for your specific system.
Is N-498 PIECE 15 still available?
N-498 PIECE 15 is currently cancelled.
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Last verified: September 2026