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Technical Data Sheet
PartsTable / COMPONENT / 11-AV/-1/8
11-AV/-1/8 ✓ 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 11-AV/-1/8 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-232-2487, 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
11-AV/-1/8
NSN: 4820-01-232-2487
FSC: 4820
CAGE: 03933 — ARMSTRONG INTERNATIONAL INC DBA ARMSTRONG MACHINE WORKS (USA)
SPECIFICATIONS
Part Number11-AV/-1/8
NSN4820-01-232-2487
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 11-AV/-1/8 · 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
•
NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN
•
MAXIMUM OPERATING TEMP: 500.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE
•
FLOW CONTROL DEVICE: PISTON
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
FURNISHED ITEMS AND QUANTITY: 1 FLOAT AND 1 LEVER
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.500 INCHES SECOND END IN
MAXIMUM OPERATING TEMP500.0 FAHRENHEIT SINGLE RESPONSE DEGF
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
FLOW CONTROL DEVICEPISTON
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIALSTEEL CORROSION RESISTING OVERALL
FURNISHED ITEMS AND QUANTITY1 FLOAT AND 1 LEVER
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
SPECIAL FEATURES0.125 IN. DIA ORIFICE IN
VALVE OPERATION METHODAUTOMATIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
40173Interchangeable
interchangeable cross-reference
interchangeable
5284423Interchangeable
interchangeable cross-reference
interchangeable
5284505Interchangeable
interchangeable cross-reference
interchangeable
C457-1Interchangeable
interchangeable cross-reference
interchangeable
BA3959Interchangeable
interchangeable cross-reference
interchangeable
648697Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11-AV/-1/8?
11-AV/-1/8 is a 11-AV/-1/8.
What parts can replace 11-AV/-1/8?
There are 19 known substitutes for 11-AV/-1/8: 40173, 5284423, 5284505 and 16 more. Substitute compatibility should be verified for your specific system.
Is 11-AV/-1/8 still available?
11-AV/-1/8 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