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PartsTable / COMPONENT / A7443-003-171
A7443-003-171 ✓ 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: STEEL CORROSION RESISTING OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 1.750 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 2.375 INCHES NOMINAL IN, style_designator: PLAIN THREADED, nominal_thread_size: 2.125 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 4820-01-407-9317, 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
A7443-003-171
NSN: 4820-01-407-9317
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length1.750 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height2.375 INCHES NOMINAL IN
style_designatorPLAIN THREADED
nominal_thread_size2.125 INCHES SINGLE THREADED PORTION IN
body_inside_diameter1.500 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch14 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
material_document_and_classificationASTM-A351 GR CF8M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4820-01-407-9317
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A7443-003-171 · 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
•
BODY INSIDE DIAMETER: 1.500 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
STYLE DESIGNATOR: PLAIN THREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A351 GR CF8M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
NOMINAL THREAD SIZE: 2.125 INCHES SINGLE THREADED PORTION IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER1.500 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORPLAIN THREADED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A351 GR CF8M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
OVERALL HEIGHT2.375 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.125 INCHES SINGLE THREADED PORTION IN
THREAD CLASS2A SINGLE THREADED PORTION A
THREAD LENGTH1.750 INCHES NOMINAL SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
SW1382-2Interchangeable
interchangeable cross-reference
interchangeable
DP1Interchangeable
interchangeable cross-reference
interchangeable
A07443.003.171Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A7443-003-171?
A7443-003-171 is a SEAT,VALVE.
What parts can replace A7443-003-171?
There are 3 known substitutes for A7443-003-171: SW1382-2, DP1, A07443.003.171. Substitute compatibility should be verified for your specific system.
What is the NSN for A7443-003-171?
A7443-003-171 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-407-9317. 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