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A18596 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 1.073 INCHES NOMINAL IN, shank_diameter: 0.270 INCHES NOMINAL IN, flange_diameter: 0.499 INCHES NOMINAL IN, style_designator: POPPET, media_for_which_designed: HYDRAULIC FLUID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-117-3788, 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
A18596
NSN: 4820-01-117-3788
FSC: 4820
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialSTEEL
overall_height1.073 INCHES NOMINAL IN
shank_diameter0.270 INCHES NOMINAL IN
flange_diameter0.499 INCHES NOMINAL IN
style_designatorPOPPET
media_for_which_designedHYDRAULIC FLUID
NSN4820-01-117-3788
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A18596 · 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
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID
•
MATERIAL: STEEL
•
FLANGE DIAMETER: 0.499 INCHES NOMINAL IN
•
SHANK DIAMETER: 0.270 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
TECHNICAL CHARACTERISTICS (FLIS)
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID
MATERIALSTEEL
FLANGE DIAMETER0.499 INCHES NOMINAL IN
SHANK DIAMETER0.270 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
OVERALL HEIGHT1.073 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
412154-1Interchangeable
interchangeable cross-reference
interchangeable
18596Interchangeable
interchangeable cross-reference
interchangeable
98005R91Interchangeable
interchangeable cross-reference
interchangeable
455071Interchangeable
interchangeable cross-reference
interchangeable
678-0509-000Interchangeable
interchangeable cross-reference
interchangeable
DD-4686 REF NO 25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A18596?
A18596 is a DISK,VALVE.
What parts can replace A18596?
There are 10 known substitutes for A18596: 412154-1, 18596, 98005R91 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A18596?
A18596 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-117-3788. 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