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Technical Data Sheet
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1286B3 — VALVE,PLUG

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1286B3: VALVE,PLUG.

The VALVE,PLUG is a the manufacturer industrial component. Key specifications include flow_style: THREE-WAY THREE PORT 180 DEGREE PLUG TURN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_style: FLARED (TUBE) FIRST END, thread_direction: RIGHT-HAND FIRST END, mounting_facility: THREADED FASTENER. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-141-9173, 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
1286B3
NSN: 4820-00-141-9173
FSC: 4820 — Valves, Nonpowered
CAGE: 81982 — HYDRO-AIRE AEROSPACE CORP (USA)
SPECIFICATIONS
flow_styleTHREE-WAY THREE PORT 180 DEGREE PLUG TURN
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_styleFLARED (TUBE) FIRST END
thread_directionRIGHT-HAND FIRST END
mounting_facilityTHREADED FASTENER
nominal_thread_size1.312 INCHES FIRST END IN
valve_operation_methodMANUAL
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
nominal_outside_diameter_tube_accommodated1.000 INCHES FIRST END IN
NSN4820-00-141-9173
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1286B3 · 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
•
CONNECTION STYLE: FLARED (TUBE) FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST END IN
•
FLOW STYLE: THREE-WAY THREE PORT 180 DEGREE PLUG TURN
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
MOUNTING FACILITY: THREADED FASTENER
•
THREAD CLASS: 3A FIRST END A
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
FLOW STYLETHREE-WAY THREE PORT 180 DEGREE PLUG TURN
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
MOUNTING FACILITYTHREADED FASTENER
THREAD CLASS3A FIRST END A
THREAD QUANTITY PER INCH12 FIRST END
THREAD SERIES DESIGNATORUN FIRST END
SUBSTITUTES & CROSS-REFERENCES 3
1287A3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1286-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1286A3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1286B3?
1286B3 is a VALVE,PLUG.
What parts can replace 1286B3?
There are 3 known substitutes for 1286B3: 1287A3, 1286-3, 1286A3. Substitute compatibility should be verified for your specific system.
What is the NSN for 1286B3?
1286B3 is cataloged in the U.S. Government catalog under NSN 4820-00-141-9173. This indicates validated use in U.S. government and defense supply chains.
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