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PartsTable / COMPONENT / 4820PL0143978
4820PL0143978 ✓ 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 material: ALUMINUM ALLOY OVERALL, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARELESS ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-064-1974, 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
4820PL0143978
NSN: 4820-00-064-1974
FSC: 4820
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
seat_angle12.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_styleFLARELESS ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.438 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
NSN4820-00-064-1974
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4820PL0143978 · 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: 0.438 INCHES ALL ENDS IN
•
DISK LOADING METHOD: SPRING
•
FLOW CONTROL DEVICE: POPPET
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
CONNECTION STYLE: FLARELESS ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
STYLE DESIGNATORSTRAIGHT THRU
MATERIALALUMINUM ALLOY OVERALL
CONNECTION STYLEFLARELESS ALL ENDS
THREAD CLASS3A ALL ENDS A
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
THREAD SERIES DESIGNATORUNF ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
999439Interchangeable
interchangeable cross-reference
interchangeable
G34Interchangeable
interchangeable cross-reference
interchangeable
69229Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4820PL0143978?
4820PL0143978 is a VALVE,CHECK.
What parts can replace 4820PL0143978?
There are 3 known substitutes for 4820PL0143978: 999439, G34, 69229. Substitute compatibility should be verified for your specific system.
Is 4820PL0143978 still available?
4820PL0143978 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