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21331-001 FIND 8 — Technical Data Sheet

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— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The PISTON,VALVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, special_features: OPTIONAL MATERIAL: 6061-T651, 6061-T6510 OR 6061-T652, surface_treatment: ANODIZE, end_item_identification: NAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN, valve_design_control_activity: 78062, valve_type_for_which_designed: SHUTTLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-01-419-2648, 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
21331-001 FIND 8
NSN: 4820-01-419-2648
FSC: 4820
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
special_featuresOPTIONAL MATERIAL: 6061-T651, 6061-T6510 OR 6061-T652
surface_treatmentANODIZE
end_item_identificationNAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN
valve_design_control_activity78062
valve_type_for_which_designedSHUTTLE
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
valve_model_number_for_which_designed21331-001
surface_treatment_document_and_classificationMIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
NSN4820-01-419-2648
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21331-001 FIND 8 · 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
•
SURFACE TREATMENT: ANODIZE
•
VALVE DESIGN CONTROL ACTIVITY: 78062
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 21331-001
•
VALVE TYPE FOR WHICH DESIGNED: SHUTTLE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESOPTIONAL MATERIAL: 6061-T651, 6061-T6510 OR 6061-T652
SURFACE TREATMENTANODIZE
END ITEM IDENTIFICATIONNAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN
VALVE DESIGN CONTROL ACTIVITY78062
VALVE MODEL NUMBER FOR WHICH DESIGNED21331-001
VALVE TYPE FOR WHICH DESIGNEDSHUTTLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
21331InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
792InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3930268HInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
RJ-5104InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A2133-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10-732InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21331-001 FIND 8?
21331-001 FIND 8 is a PISTON,VALVE.
What parts can replace 21331-001 FIND 8?
There are 10 known substitutes for 21331-001 FIND 8: 21331, 792, 3930268H and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21331-001 FIND 8?
21331-001 FIND 8 is cataloged in the Federal Logistics Information System under NSN 4820-01-419-2648. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026