PartsTable
Technical Data Sheet
4120BG502 ✓ 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,PLUG is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE PACKING, flow_style: THREE-WAY TWO PORT 180 DEGREE PLUG TURN, seat_angle: 20.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-006-3623, 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
4120BG502
NSN: 4820-01-006-3623
FSC: 4820
CAGE: 22501 — HOWELL LABORATORIES INC DBA HOWELL LABORATORIES INC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE PACKING
flow_styleTHREE-WAY TWO PORT 180 DEGREE PLUG TURN
seat_angle20.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
thread_directionRIGHT-HAND ALL ENDS
mounting_facilityBULKHEAD
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES ALL ENDS IN
maximum_operating_temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
NSN4820-01-006-3623
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 4120BG502 · 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
THREAD CLASS: 2A ALL ENDS A
THREAD DIRECTION: RIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
VALVE OPERATION METHOD: MANUAL
MOUNTING FACILITY: BULKHEAD
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE PACKING
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A ALL ENDS A
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
VALVE OPERATION METHODMANUAL
MOUNTING FACILITYBULKHEAD
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE PACKING
OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
4120Interchangeable
interchangeable cross-reference
interchangeable
434-0283-000Interchangeable
interchangeable cross-reference
interchangeable
MS35214-10Interchangeable
interchangeable cross-reference
interchangeable
459272Interchangeable
interchangeable cross-reference
interchangeable
504Interchangeable
interchangeable cross-reference
interchangeable
10232738Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4120BG502?
4120BG502 is a VALVE,PLUG.
What parts can replace 4120BG502?
There are 19 known substitutes for 4120BG502: 4120, 434-0283-000, MS35214-10 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4120BG502?
4120BG502 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-006-3623. This indicates validated use in U.S. government and defense supply chains.
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