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Technical Data Sheet
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911L565 — 911L565

✓ Government record, cited
DOVER RESOURCES, INC. DIV NORRISEAL · GATE VALVE
PRODUCT OVERVIEW

911L565: 911L565.

The 911L565 is a DOVER RESOURCES, INC. DIV NORRISEAL industrial component. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-457-1341, 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
911L565
NSN: 4820-01-457-1341
FSC: 4820 — Valves, Nonpowered
CAGE: 91363 — NORRISEAL NORRIS VALUES DIV DBA DOVER CO (USA)
SPECIFICATIONS
Part Number911L565
ManufacturerDOVER RESOURCES, INC. DIV NORRISEAL
NSN4820-01-457-1341
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 911L565 · DOVER RESOURCES, INC. DIV NORRISEAL ⚠ 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: ZINC
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS
SURFACE TREATMENTZINC
END ITEM IDENTIFICATIONWASP CLASS LHD
MATERIALSTEEL BODY
SUBSTITUTES & CROSS-REFERENCES 2
1022561Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
911-565 REV CReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 911L565?
911L565 is a 911L565 manufactured by DOVER RESOURCES, INC. DIV NORRISEAL.
What parts can replace 911L565?
There are 2 known substitutes for 911L565: 1022561, 911-565 REV C. Substitute compatibility should be verified for your specific system.
What is the NSN for 911L565?
911L565 is cataloged in the U.S. Government catalog under NSN 4820-01-457-1341. 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.