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Technical Data Sheet
PartsTable / COMPONENT / 18972-18
18972-18 ✓ 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 STATOR,MOTOR-GENERATOR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.594 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 2.593 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 2.375 INCHES SINGLE THREADED PORTION IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-196-1198, 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
18972-18
NSN: 4820-01-196-1198
FSC: 4820
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.594 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter2.593 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size2.375 INCHES SINGLE THREADED PORTION IN
under_flange_height0.375 INCHES NOMINAL IN
body_inside_diameter2.375 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch16 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.375 INCHES NOMINAL IN
NSN4820-01-196-1198
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18972-18 · 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
•
NOMINAL THREAD SIZE: 2.375 INCHES SINGLE THREADED PORTION IN
•
THREAD QUANTITY PER INCH: 16 SINGLE THREADED PORTION
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UN SINGLE THREADED PORTION
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B62 ALLOY 836 ASSN STD SINGLE MATERIAL RESPONSE SEAT
•
MATERIAL: COPPER ALLOY OVERALL
•
FLANGE SEAT TO DISK END HEIGHT: 0.375 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.593 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE2.375 INCHES SINGLE THREADED PORTION IN
THREAD QUANTITY PER INCH16 SINGLE THREADED PORTION
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B62 ALLOY 836 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIALCOPPER ALLOY OVERALL
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
FLANGE DIAMETER2.593 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.375 INCHES NOMINAL IN
THREAD LENGTH0.594 INCHES NOMINAL SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
61-181Interchangeable
interchangeable cross-reference
interchangeable
3R8129Interchangeable
interchangeable cross-reference
interchangeable
4K1077Interchangeable
interchangeable cross-reference
interchangeable
103S14Interchangeable
interchangeable cross-reference
interchangeable
2523Interchangeable
interchangeable cross-reference
interchangeable
302677Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18972-18?
18972-18 is a STATOR,MOTOR-GENERATOR.
What parts can replace 18972-18?
There are 12 known substitutes for 18972-18: 61-181, 3R8129, 4K1077 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18972-18?
18972-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-196-1198. 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