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Technical Data Sheet
PartsTable / COMPONENT / 8AP-879
8AP-879 ✓ 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 VALVE,CHECK is a the manufacturer industrial component. Key specifications include style_designator: STRAIGHT THRU, valve_operation_method: AUTOMATIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-184-4099, 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
8AP-879
NSN: 4820-01-184-4099
FSC: 4820
CAGE: 64352 — APPLIED POLYMER TECHNOLOGY INC (USA)
SPECIFICATIONS
style_designatorSTRAIGHT THRU
valve_operation_methodAUTOMATIC
NSN4820-01-184-4099
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8AP-879 · 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
•
VALVE OPERATION METHOD: AUTOMATIC
•
STYLE DESIGNATOR: STRAIGHT THRU
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
9571Interchangeable
interchangeable cross-reference
interchangeable
401025Interchangeable
interchangeable cross-reference
interchangeable
21532Interchangeable
interchangeable cross-reference
interchangeable
220220Interchangeable
interchangeable cross-reference
interchangeable
22827Interchangeable
interchangeable cross-reference
interchangeable
22827-622-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8AP-879?
8AP-879 is a VALVE,CHECK.
What parts can replace 8AP-879?
There are 7 known substitutes for 8AP-879: 9571, 401025, 21532 and 4 more. Substitute compatibility should be verified for your specific system.
Is 8AP-879 still available?
8AP-879 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