PartsTable
Technical Data Sheet
Download PDF

18283-42 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

18283-42: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OR ALUMINUM ALLOY OVERALL, seat_radius: 0.468 INCHES NOMINAL IN, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 2.750 INCHES NOMINAL IN, style_designator: FAUCET. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-013-5807, 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
18283-42
NSN: 4820-01-013-5807
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY OR ALUMINUM ALLOY OVERALL
seat_radius0.468 INCHES NOMINAL IN
thread_class2A SINGLE THREADED PORTION A
thread_length0.406 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter2.750 INCHES NOMINAL IN
style_designatorFAUCET
nominal_thread_size2.250 INCHES SINGLE THREADED PORTION IN
under_flange_height0.687 INCHES NOMINAL IN
body_inside_diameter2.015 INCHES NOMINAL IN
seating_surface_shapeRADIAL
thread_quantity_per_inch14 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-01-013-5807
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18283-42 · 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: 0.250 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: FAUCET
•
BODY INSIDE DIAMETER: 2.015 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.250 INCHES SINGLE THREADED PORTION IN
•
SEAT RADIUS: 0.468 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.687 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.250 INCHES NOMINAL IN
FLANGE DIAMETER2.750 INCHES NOMINAL IN
THREAD LENGTH0.406 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORFAUCET
BODY INSIDE DIAMETER2.015 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.250 INCHES SINGLE THREADED PORTION IN
SEAT RADIUS0.468 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.687 INCHES NOMINAL IN
THREAD CLASS2A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH14 SINGLE THREADED PORTION
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
N-552PC15Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 18283-42?
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 18283-42?
18283-42 is a SEAT,VALVE.
What parts can replace 18283-42?
There is 1 known substitute for 18283-42: N-552PC15. Substitute compatibility should be verified for your specific system.
What is the NSN for 18283-42?
18283-42 is cataloged in the U.S. Government catalog under NSN 4820-01-013-5807. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 18283-42

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.