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PartsTable / COMPONENT / EEP-54-ASX DETAIL 12
EEP-54-ASX DETAIL 12 ✓ 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: NICKEL ALLOY OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.400 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 0.634 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 50.000 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 4820-01-173-1231, 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
EEP-54-ASX DETAIL 12
NSN: 4820-01-173-1231
FSC: 4820
CAGE: 16199 — ERNST FLOW INDUSTRIES LLC DIV ERNST FLOW INDUSTRIES (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.400 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter0.634 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg50.000 NOMINAL
nominal_thread_size0.500 INCHES SINGLE THREADED PORTION IN
under_flange_height0.503 INCHES NOMINAL IN
body_inside_diameter0.283 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_series_designatorUNF SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.194 INCHES NOMINAL IN
NSN4820-01-173-1231
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: EEP-54-ASX DETAIL 12 · 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 DIAMETER: 0.634 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UNF SINGLE THREADED PORTION
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SEAT ANGLE IN DEG: 50.000 NOMINAL
•
THREAD LENGTH: 0.400 INCHES NOMINAL SINGLE THREADED PORTION IN
•
BODY INSIDE DIAMETER: 0.283 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER0.634 INCHES NOMINAL IN
MATERIALNICKEL ALLOY OVERALL
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUNF SINGLE THREADED PORTION
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SEAT ANGLE IN DEG50.000 NOMINAL
THREAD LENGTH0.400 INCHES NOMINAL SINGLE THREADED PORTION IN
BODY INSIDE DIAMETER0.283 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.503 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.194 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
903-12Interchangeable
interchangeable cross-reference
interchangeable
EEP54-ASX PIECE 21Interchangeable
interchangeable cross-reference
interchangeable
EEP-54-ASXInterchangeable
interchangeable cross-reference
interchangeable
EEP160TP-3/4ODX28INLG POLYInterchangeable
interchangeable cross-reference
interchangeable
TMS 8041Interchangeable
interchangeable cross-reference
interchangeable
25M10-CTR TO CTR 12INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is EEP-54-ASX DETAIL 12?
EEP-54-ASX DETAIL 12 is a SEAT,VALVE.
What parts can replace EEP-54-ASX DETAIL 12?
There are 8 known substitutes for EEP-54-ASX DETAIL 12: 903-12, EEP54-ASX PIECE 21, EEP-54-ASX and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for EEP-54-ASX DETAIL 12?
EEP-54-ASX DETAIL 12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-173-1231. 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