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B59035-1 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B59035-1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER OR NICKEL OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.875 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 1.500 INCHES SINGLE THREADED PORTION IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-778-2999, 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
B59035-1
NSN: 4820-00-778-2999
FSC: 4820 — Valves, Nonpowered
CAGE: 32869 — O. C. KECKLEY COMPANY (USA)
SPECIFICATIONS
materialCOPPER OR NICKEL OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.875 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size1.500 INCHES SINGLE THREADED PORTION IN
under_flange_height0.375 INCHES NOMINAL IN
body_inside_diameter1.250 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_series_designatorUNEF SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.188 INCHES NOMINAL IN
NSN4820-00-778-2999
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B59035-1 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.188 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.500 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.375 INCHES NOMINAL IN
•
THREAD CLASS: 3A SINGLE THREADED PORTION A
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.188 INCHES NOMINAL IN
FLANGE DIAMETER1.875 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER1.250 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.500 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.375 INCHES NOMINAL IN
THREAD CLASS3A SINGLE THREADED PORTION A
MATERIALCOPPER OR NICKEL OVERALL
THREAD SERIES DESIGNATORUNEF 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
D59001-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B59035-1?
B59035-1 is a SEAT,VALVE.
What parts can replace B59035-1?
There is 1 known substitute for B59035-1: D59001-2. Substitute compatibility should be verified for your specific system.
What is the NSN for B59035-1?
B59035-1 is cataloged in the U.S. Government catalog under NSN 4820-00-778-2999. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.