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Technical Data Sheet
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11-921 — Technical Data Sheet

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Legrand · MRO · MRO_GENERAL
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 MODULE,CONFIGURATION is a Legrand industrial component. Key specifications include nominal_thread_size: 0.375 INCHES IN, thread_series_designator: NPT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4810-00-004-8404, 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
MRO→ MRO_GENERAL→ 11-921
NSN: 4810-00-004-8404
FSC: 4810
CAGE: 20874 — ERIE STRAYER CO (USA)
SPECIFICATIONS
nominal_thread_size0.375 INCHES IN
end_connection_quantity4
thread_series_designatorNPT
NSN4810-00-004-8404
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 11-921 · Legrand ⚠ 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
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
THREAD SERIES DESIGNATOR: NPT
•
END CONNECTION QUANTITY: 4
TECHNICAL CHARACTERISTICS
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD SERIES DESIGNATORNPT
END CONNECTION QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
AI121-4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
29-115HP5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2940PL0896778InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
150 38InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1340InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B94.11MInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11-921?
11-921 is a MODULE,CONFIGURATION manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 11-921?
There are 17 known substitutes for 11-921: AI121-4, 29-115HP5, 2940PL0896778 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11-921?
11-921 is cataloged in the Federal Logistics Information System under NSN 4810-00-004-8404. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026