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9781K12 — VALVE,FLOW CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

9781K12: VALVE,FLOW CONTROL.

The VALVE,FLOW CONTROL is a the manufacturer industrial component. Key specifications include valve_size: 0.125 INCHES IN, flow_control_device: DISK, nominal_thread_size: 0.125 INCHES IN, valve_operation_method: MANUAL, end_item_identification: 4920-01-339-9212, thread_series_designator: NPT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-394-3758, 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
9781K12
NSN: 4820-01-394-3758
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
valve_size0.125 INCHES IN
flow_control_deviceDISK
nominal_thread_size0.125 INCHES IN
valve_operation_methodMANUAL
end_item_identification4920-01-339-9212
thread_series_designatorNPT
operating_pressure_and_type150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
NSN4820-01-394-3758
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9781K12 · 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
•
FLOW CONTROL DEVICE: DISK
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
•
VALVE SIZE: 0.125 INCHES IN
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
THREAD SERIES DESIGNATOR: NPT
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
VALVE SIZE0.125 INCHES IN
NOMINAL THREAD SIZE0.125 INCHES IN
END ITEM IDENTIFICATION4920-01-339-9212
THREAD SERIES DESIGNATORNPT
VALVE OPERATION METHODMANUAL
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
BB30A2SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9781K12?
9781K12 is a VALVE,FLOW CONTROL.
What parts can replace 9781K12?
There is 1 known substitute for 9781K12: BB30A2S. Substitute compatibility should be verified for your specific system.
What is the NSN for 9781K12?
9781K12 is cataloged in the U.S. Government catalog under NSN 4820-01-394-3758. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.