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Technical Data Sheet
PartsTable / COMPONENT / 12529A
12529A ✓ 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 OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.137 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.168 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN, style_designator: PLAIN THREADED, seat_angle_in_deg: 0.750 NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-431-1653, 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
12529A
NSN: 4820-00-431-1653
FSC: 4820
CAGE: 53239 — COMPAIR KELLOGG DIV OF ROBERTSHAW CONTROLS CO (USA)
SPECIFICATIONS
materialCOPPER OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.137 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.168 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN
style_designatorPLAIN THREADED
seat_angle_in_deg0.750 NOMINAL
nominal_thread_size1.500 INCHES SINGLE THREADED PORTION IN
body_inside_diameter0.500 INCHES NOMINAL IN
seating_surface_shapeANGULAR
end_item_identificationGRUMMAN AEROSPACE A-10 AIRCRAFT
thread_quantity_per_inch24 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-00-431-1653
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 12529A · 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
•
STYLE DESIGNATOR: PLAIN THREADED
•
MATERIAL: COPPER OVERALL
•
SEATING SURFACE SHAPE: ANGULAR
•
NOMINAL THREAD SIZE: 1.500 INCHES SINGLE THREADED PORTION IN
•
THREAD QUANTITY PER INCH: 24 SINGLE THREADED PORTION
•
THREAD CLASS: 3A SINGLE THREADED PORTION A
•
SEAT ANGLE IN DEG: 0.750 NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORPLAIN THREADED
MATERIALCOPPER OVERALL
SEATING SURFACE SHAPEANGULAR
NOMINAL THREAD SIZE1.500 INCHES SINGLE THREADED PORTION IN
THREAD QUANTITY PER INCH24 SINGLE THREADED PORTION
THREAD CLASS3A SINGLE THREADED PORTION A
SEAT ANGLE IN DEG0.750 NOMINAL
OVERALL HEIGHT0.168 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN
THREAD LENGTH0.137 INCHES NOMINAL SINGLE THREADED PORTION IN
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
12529Interchangeable
interchangeable cross-reference
interchangeable
AR50874Interchangeable
interchangeable cross-reference
interchangeable
18526Interchangeable
interchangeable cross-reference
interchangeable
PS76037-1Interchangeable
interchangeable cross-reference
interchangeable
102F002U01Interchangeable
interchangeable cross-reference
interchangeable
RPR144Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12529A?
12529A is a SEAT,VALVE.
What parts can replace 12529A?
There are 9 known substitutes for 12529A: 12529, AR50874, 18526 and 6 more. Substitute compatibility should be verified for your specific system.
Is 12529A still available?
12529A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026