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Technical Data Sheet
PartsTable / COMPONENT / 8526497
8526497 ✓ 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, flange_diameter: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, under_flange_height: 0.185 INCHES NOMINAL IN, body_inside_diameter: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, body_outside_diameter: 0.387 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-613-2859, 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
8526497
NSN: 4810-00-613-2859
FSC: 4810
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
under_flange_height0.185 INCHES NOMINAL IN
body_inside_diameter0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
body_outside_diameter0.387 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.068 INCHES NOMINAL IN
NSN4810-00-613-2859
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8526497 · 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: STEEL CORROSION RESISTING OVERALL
•
FLANGE SEAT TO DISK END HEIGHT: 0.068 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.387 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
•
SEATING SURFACE SHAPE: FLAT
•
STYLE DESIGNATOR: PLAIN FLANGED
•
UNDER FLANGE HEIGHT: 0.185 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
FLANGE SEAT TO DISK END HEIGHT0.068 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.387 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN
FLANGE DIAMETER0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT0.185 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
PEF90S/4P-12Interchangeable
interchangeable cross-reference
interchangeable
Z128Interchangeable
interchangeable cross-reference
interchangeable
25G227Interchangeable
interchangeable cross-reference
interchangeable
13173Interchangeable
interchangeable cross-reference
interchangeable
1021Interchangeable
interchangeable cross-reference
interchangeable
AE8S45-6ALT1PC84Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8526497?
8526497 is a SEAT,VALVE.
What parts can replace 8526497?
There are 11 known substitutes for 8526497: PEF90S/4P-12, Z128, 25G227 and 8 more. Substitute compatibility should be verified for your specific system.
Is 8526497 still available?
8526497 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026