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A6388 ✓ 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

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: IRON CAST OVERALL, corner_shape: SQUARE ALL CORNERS, body_inside_diameter: 1.5000 INCHES NOMINAL IN, end_item_identification: 4WS6M SERIES WINCH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-418-4873, 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
A6388
NSN: 4810-00-418-4873
FSC: 4810
CAGE: 03933 — ARMSTRONG INTERNATIONAL INC DBA ARMSTRONG MACHINE WORKS (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
corner_shapeSQUARE ALL CORNERS
body_inside_diameter1.5000 INCHES NOMINAL IN
end_item_identification4WS6M SERIES WINCH
NSN4810-00-418-4873
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A6388 · 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
•
MATERIAL THICKNESS: 0.075 INCHES NOMINAL IN
•
MATERIAL: RUBBER
•
OUTSIDE DIAMETER: 6.125 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPECIAL SHAPED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.075 INCHES NOMINAL IN
MATERIALRUBBER
OUTSIDE DIAMETER6.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.125 INCHES NOMINAL IN
STYLE DESIGNATORSPECIAL SHAPED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
185031-1Interchangeable
interchangeable cross-reference
interchangeable
100-22000NInterchangeable
interchangeable cross-reference
interchangeable
UG-913A/UInterchangeable
interchangeable cross-reference
interchangeable
522362Interchangeable
interchangeable cross-reference
interchangeable
A6388Interchangeable
interchangeable cross-reference
interchangeable
7735827Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6388?
A6388 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace A6388?
There are 7 known substitutes for A6388: 185031-1, 100-22000N, UG-913A/U and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6388?
A6388 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-418-4873. 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