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21129-007 — VALVE,LINEAR,DIRECTIONAL CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21129-007: VALVE,LINEAR,DIRECTIONAL CONTROL.

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include body_material: ALUMINUM ALLOY 6061, special_features: VALVE SIZE 1IN. IN, valve_operation_method: MANUAL, end_item_identification: SEAWOLF CLASS SSN, valve_discharge_flow_rate: 12.0 GALLONS PER MINUTE.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-419-2542, 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
21129-007
NSN: 4820-01-419-2542
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
body_materialALUMINUM ALLOY 6061
spool_quantity2
special_featuresVALVE SIZE 1IN. IN
flow_pattern_quantity4
valve_operation_methodMANUAL
end_connection_quantity2
end_item_identificationSEAWOLF CLASS SSN
spool_position_quantity3
valve_discharge_flow_rate12.0 GALLONS PER MINUTE
NSN4820-01-419-2542
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21129-007 · 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
•
END CONNECTION QUANTITY: 2
•
SPOOL QUANTITY: 2
•
BODY MATERIAL: ALUMINUM ALLOY 6061
•
VALVE DISCHARGE FLOW RATE: 12.0 GALLONS PER MINUTE
•
VALVE OPERATION METHOD: MANUAL
•
FLOW PATTERN QUANTITY: 4
TECHNICAL CHARACTERISTICS
END CONNECTION QUANTITY2
SPOOL QUANTITY2
BODY MATERIALALUMINUM ALLOY 6061
SPECIAL FEATURESVALVE SIZE 1IN. IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
VALVE DISCHARGE FLOW RATE12.0 GALLONS PER MINUTE
VALVE OPERATION METHODMANUAL
FLOW PATTERN QUANTITY4
SPOOL POSITION QUANTITY3
SUBSTITUTES & CROSS-REFERENCES 1
21129Reference 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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 21129-007?
21129-007 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What parts can replace 21129-007?
There is 1 known substitute for 21129-007: 21129. Substitute compatibility should be verified for your specific system.
What is the NSN for 21129-007?
21129-007 is cataloged in the U.S. Government catalog under NSN 4820-01-419-2542. 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.