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21783-400-1 — SUBPLATE ASSEMBLY,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21783-400-1: SUBPLATE ASSEMBLY,VALVE.

The SUBPLATE ASSEMBLY,VALVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, connection_type: UNTHREADED EXTERNAL TUBE ALL ENDS, connection_style: GROOVED (TUBE) ALL ENDS, special_features: NEXT HIGHER ASSEMBLY IS THE VALVE ASSEMBLY, MANIFOLD: NSN 4820-01-478-9585, style_designator: GROOVED BOTH ENDS, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-490-7053, 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
21783-400-1
NSN: 4820-01-490-7053
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
connection_typeUNTHREADED EXTERNAL TUBE ALL ENDS
connection_styleGROOVED (TUBE) ALL ENDS
special_featuresNEXT HIGHER ASSEMBLY IS THE VALVE ASSEMBLY, MANIFOLD: NSN 4820-01-478-9585
style_designatorGROOVED BOTH ENDS
surface_treatmentANODIZE OVERALL
end_item_identificationLOS ANGELES CLASS SSN (688)
material_document_and_classificationASTM B211 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625, TYPE 1, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4820-01-490-7053
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21783-400-1 · 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
SUBSTITUTES & CROSS-REFERENCES 1
21783-400Reference 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 21783-400-1?
21783-400-1 is a SUBPLATE ASSEMBLY,VALVE.
What parts can replace 21783-400-1?
There is 1 known substitute for 21783-400-1: 21783-400. Substitute compatibility should be verified for your specific system.
What is the NSN for 21783-400-1?
21783-400-1 is cataloged in the U.S. Government catalog under NSN 4820-01-490-7053. 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.