PartsTable
Technical Data Sheet
8151-4AF ✓ 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 COCK,PLUG is a the manufacturer industrial component. Key specifications include flow_style: TWO WAY TWO PORT 90 DEGREE PLUG TURN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARED (TUBE) FIRST END, thread_direction: RIGHT-HAND FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-202-6250, 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
8151-4AF
NSN: 4820-00-202-6250
FSC: 4820
CAGE: 92003 — PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS (USA)
SPECIFICATIONS
flow_styleTWO WAY TWO PORT 90 DEGREE PLUG TURN
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED (TUBE) FIRST END
thread_directionRIGHT-HAND FIRST END
nominal_thread_size0.437 INCHES FIRST END IN
valve_operation_methodMANUAL
thread_quantity_per_inch20 FIRST END
thread_series_designatorUNF FIRST END
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4820-00-202-6250
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 8151-4AF · 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 QUANTITY PER INCH: 20 FIRST END
SEAT ANGLE: 37.0 DEGREES FIRST END
FLOW STYLE: TWO WAY TWO PORT 90 DEGREE PLUG TURN
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
THREAD DIRECTION: RIGHT-HAND FIRST END
CONNECTION STYLE: FLARED (TUBE) FIRST END
NOMINAL THREAD SIZE: 0.437 INCHES FIRST END IN
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH20 FIRST END
SEAT ANGLE37.0 DEGREES FIRST END
FLOW STYLETWO WAY TWO PORT 90 DEGREE PLUG TURN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL THREAD SIZE0.437 INCHES FIRST END IN
VALVE OPERATION METHODMANUAL
THREAD CLASS3A FIRST END A
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
49F9798-62Interchangeable
interchangeable cross-reference
interchangeable
775C-62NWInterchangeable
interchangeable cross-reference
interchangeable
8151-6AFInterchangeable
interchangeable cross-reference
interchangeable
8151-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-25023Interchangeable
interchangeable cross-reference
interchangeable
71D-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8151-4AF?
8151-4AF is a COCK,PLUG.
What parts can replace 8151-4AF?
There are 27 known substitutes for 8151-4AF: 49F9798-62, 775C-62NW, 8151-6AF and 24 more. Substitute compatibility should be verified for your specific system.
Is 8151-4AF still available?
8151-4AF is currently cancelled.
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