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PartsTable / COMPONENT / 012-500-0008
012-500-0008 ✓ 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 ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.812 INCHES NOMINAL IN, style_designator: PLAIN THREADED, seat_angle_in_deg: 45.000 NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-343-6979, 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
012-500-0008
NSN: 4820-00-343-6979
FSC: 4820
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.812 INCHES NOMINAL IN
style_designatorPLAIN THREADED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size3.750 INCHES SINGLE THREADED PORTION IN
body_inside_diameter3.000 INCHES MINIMUM AND 3.001 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
thread_quantity_per_inch16 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
NSN4820-00-343-6979
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 012-500-0008 · 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
•
THREAD SERIES DESIGNATOR: UN SINGLE THREADED PORTION
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: PLAIN THREADED
•
THREAD LENGTH: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
•
THREAD QUANTITY PER INCH: 16 SINGLE THREADED PORTION
•
BODY INSIDE DIAMETER: 3.000 INCHES MINIMUM AND 3.001 INCHES MAXIMUM IN
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORPLAIN THREADED
THREAD LENGTH0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
THREAD QUANTITY PER INCH16 SINGLE THREADED PORTION
OVERALL HEIGHT0.812 INCHES NOMINAL IN
BODY INSIDE DIAMETER3.000 INCHES MINIMUM AND 3.001 INCHES MAXIMUM IN
SEATING SURFACE SHAPEANGULAR
NOMINAL THREAD SIZE3.750 INCHES SINGLE THREADED PORTION IN
THREAD CLASS2A SINGLE THREADED PORTION A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
874949Interchangeable
interchangeable cross-reference
interchangeable
984810-1Interchangeable
interchangeable cross-reference
interchangeable
5158Interchangeable
interchangeable cross-reference
interchangeable
BM12Interchangeable
interchangeable cross-reference
interchangeable
501512Interchangeable
interchangeable cross-reference
interchangeable
WE6-700-21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 012-500-0008?
012-500-0008 is a SEAT,VALVE.
What parts can replace 012-500-0008?
There are 13 known substitutes for 012-500-0008: 874949, 984810-1, 5158 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 012-500-0008?
012-500-0008 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-343-6979. 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