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09-21439-11-1 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

09-21439-11-1: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include style_designator: STRAIGHT THRU, mounting_position: HORIZONTAL OR VERTICAL, flow_control_device: DISK, valve_operation_method: AUTOMATIC, end_item_identification: SEAWOLF CLASS SSN, opening_pressure_setting: 8.0 POUNDS PER SQUARE INCH LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-414-2282, 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
09-21439-11-1
NSN: 4820-01-414-2282
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
style_designatorSTRAIGHT THRU
mounting_positionHORIZONTAL OR VERTICAL
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
end_item_identificationSEAWOLF CLASS SSN
opening_pressure_setting8.0 POUNDS PER SQUARE INCH LBS
NSN4820-01-414-2282
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 09-21439-11-1 · 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
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
•
STYLE DESIGNATOR: STRAIGHT THRU
•
OPENING PRESSURE SETTING: 8.0 POUNDS PER SQUARE INCH LBS
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
MOUNTING POSITIONHORIZONTAL OR VERTICAL
STYLE DESIGNATORSTRAIGHT THRU
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
OPENING PRESSURE SETTING8.0 POUNDS PER SQUARE INCH LBS
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 2
21439-400 FIND 59Reference document
Same NSN cross-reference
Reference document — Secondary reference
21439-400Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 09-21439-11-1?
09-21439-11-1 is a RESTRICTOR,FLUID FLOW.
What parts can replace 09-21439-11-1?
There are 2 known substitutes for 09-21439-11-1: 21439-400 FIND 59, 21439-400. Substitute compatibility should be verified for your specific system.
What is the NSN for 09-21439-11-1?
09-21439-11-1 is cataloged in the U.S. Government catalog under NSN 4820-01-414-2282. 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.